188
| I t I I II | I I I ::::::: _ii!ii _::: .'.'.'.'.' ....... ....... •.-...,...%-............, ,..................:.................,..i e.... ................ iiiiiiiiiiiiiiiiiiii!!iiiiiii GPO PRICE $- CFSTi PRICE(S) $- Hard copy (HC)_ j_,.2_ Microfiche (MF)_ _ _b"" ff 653 July 65 F;':':':':'>:'.'.'.'.'.:. ii_ ============================== ::i:?:i:i:i:i:i:!:' :.;.>:.:.:.:.:. !:i:i:i:i:!:i:i:i .9 iiiiiiiiiiiiiiiii i;iil;iiii;ii _ :.;.i.;.;.;.:. :.:-.. :._ .... AS-206 S-IV-B RESTART ALTERNATEMISSION L/V OPERATIONAL FLIGHT TRAJECTORY (PAGES) _ OR TMX OR AD NUMBER) CONTRACTNAS8-4016 SCHEDULEII, VEHICLE '_":::::::::: SYSTEMS INTEGRATION !iiiiiiiiiiiiiiiiiil -iiiiiiiiiiiiii!ii :::::::::::::::: SPACE DIVISION ,:.:.:.:.:.:.:.: BB-3.1.3-10-MO3 (TN-AP-67-264) PART III (T_U) (CATEGORY) CHRYSLER CORPORATION https://ntrs.nasa.gov/search.jsp?R=19680007324 2018-07-08T17:06:58+00:00Z

I I II PART III - NASA · I I II | I I I :::::_ii!ii ... Modification KSFC i, Amendment 38, ... Orbital Vent Sequence and Impulse History ..... 116 iY. Table Appendix B: IB 2B 3B

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AS-206 S-IV-B RESTART

ALTERNATEMISSION

L/V OPERATIONALFLIGHTTRAJECTORY

(PAGES) _

OR TMX OR AD NUMBER)

CONTRACTNAS8-4016

• SCHEDULEII, VEHICLE'_"::::::::::SYSTEMS INTEGRATION

!iiiiiiiiiiiiiiiiiil

-iiiiiiiiiiiiii!ii

:::::::::::::::: SPACE DIVISION

,:.:.:.:.:.:.:.:

BB-3.1.3-10-MO3

(TN-AP-67-264)

PART III

(T_U)

(CATEGORY)

CHRYSLERCORPORATION

https://ntrs.nasa.gov/search.jsp?R=19680007324 2018-07-08T17:06:58+00:00Z

BB-S. 1.3-I0-M03

(TN-AP-67-26A)PART III

AS-206 S.IVB RESTART ALTERNATE MISSION L/V OPERATIONAL FLIGHT TRAJECTORY

September 15, 1967

by

AEROSPACE PHYSICS BRANCH

CHRYSLER CORPORATION SPACE DIVISION

PREPARED BY: T. B. PEDERSON AND B. B. BARRETT

• • c tock, S_pervlsar

Preflight Trajectory Unit

APPROVED:

_.S..S. A. Zoba_, Managing Engineer

Preflight & Range Safety Group

R. D. Taylor, Mknaging Engineer

Vehicle Performance Group

': - _ <_ .<"_/_"_R H_ Ross, CHie_/Eug-ineer '

.,>" Aerospace Physics Branch

FOR_gQRD

Thls report documents the AS-206 S-IVB Restart Alternate Mission _V

Operational FiAght Trajectory. The analysis and documentati_ were perforuod

by the Aeroepace Pb_ics Branch, Chryaler Corporation Space DivisiQn, within

the scope of NAS 8-_016, Modification KSFC i, Amendment 38, MCRR No. 103,

BB Itm 3.1.3-IO-MO3, Part Ill.

AcknowledgeRents are nade to the personnel of Marshall Space FIAght

Center, R-AERO-FK, for their assistance and cooperation.

i

,TABLE OF CCl_TS

Page

FOR_gORD ................................................................... . i

TABLE OF CONTENTS .......................................................... £i

LIST OF TABI_ ............................................................. iv

LIST OF ILLUSTRATIONS ...................................................... vi

SUMMARY e e e e e ¢ o • o e • • • • $ • • • • • • • e • e • e e • e e e • • • • • • • • • • • • • • • e • e • • v e e e • e • • • • e • • e e $

1.0 INTRODUCTION ..........................................................

2.0 MISSION DESCRIPTION ...................................................

2.1 Mission Objectives ...............................................

2.2 Mission Ground Rules and Cormtraints .............................

3.0 IAUNCH VEHICLE AND _NVIRON_ DESCRIPTION ............................

3.1 Configuration ....................................................

3.2 Mass Characteristics .............................................

3.3 Aerodynamic Properties ...........................................

3._ Propulsi_ Systems ...............................................

3.5 Environment Description ..........................................

A.O GUIDANCE AND CONTROL ..................................................

&.l Guldance .........................................................

&.2 Control Systems ..................................................

5.0 L_CH VEHICLE TRAJECTCRY .............................................

DEFINITIONS AND SYMBOLS .................................................... ix

1

3

5

5

5

5

5

6

?

?

8

?

5.1 _Boost Phase ...................................................... 9

5.1.1 S-IB Stage Powered Flight ................................. 9

5-i. 2 S-IVB Stage First Burn .................................... i0

ii

,TABLEOF CC_T_TS (Cont'd)

5.2

6.0

APPENDIX A.

APPENDIX B.

APP_DIX C.

DISTRIBUTICN

Orbital Flight Phase

5.2.1

5.2.2

5.2.3

i

• e • ee • e. e • • . • • • • • • • • • • • . • • • e e • e • • e e . • e e . e e e e e

First Orbital Coast Period ................................

S-IVB Stage Second Burn ...................................

Second Orbital Coast Period ...............................

5.3 Spent S-IB Stage Trajectory ......................................

5. A Tracking Summary .................................................

5.5 Launch Vehicle Propulsion Performance Characteristics ............

5.6 S-IB Stage Engine Out Performance Capability .....................

REFERENCES ............................................................

"LAUNCH VEHICLE CHARACTERISTICS AND FLIGHT _IR_" .......

"GUIDANCE PRESETTINGS" ........................................

"TRAJECTORY LISTINGS, ENGLISH UNITS" ...........................

eeeeeeee eeeeeeeeeeeeeeeeeeemeeeeeeeeee .eeeeeee eeeoeeeeeeeee,eee

Page

io

Io

io

11

11

II

ii

]2

12

99

17_

iii

LIST OFTABLES

Table

1

2

3

5

6

7

8

9

iO

ii

12

Description

Flight Sequence of Events ................................... 1A

Launch Vehicle Trajectory Summary ........................... 17

S-IB Stage End Conditions of Flight ......................... 18

S-IVB Stage End Conditions of Flight, First Burn ............ 19

First Orbital Coast Phase End Conditions of Flight ........... 21

S-IVB Stage End Conditions of Flight, Second Burn ........... 22

Trajectory Listing, Metric Units: S-IB Stage Flight Data ... 23

Trajectory Listing, Metric Units: S-IVB Stage First Burn,First Orbital Coast and S-IVB Stage Second Burn Data ........ 28

Trajectory Listing, Metric Units: Second Orbital Coast Data. 53

Trajectory Listing, Metric Units: S-IB Stage Re-entry Data.. 62

Tracking and Telemetry Sta. Coordinates: Launch Phase ...... 66

Tracking and Telemetry Sta. Coordinates: Orbital Phase ..... 67

Appendix A: "Launch Vehicle Characteristics and Flight Environment"

IA

2A

3A

5A

6A

7A

8A

Vehicle Weight Breakdown .................................... 1OO

Launch Vehicle Propulsion Performance Characteristics ....... 102

S-IB Stage Mass Characteristics ............................. 103

S-IVB Stage First Burn, First Orbital Coast and S-IVB StageSecond Burn Mass Characteristics ............................ 10&

S-IB Stage Aerodynamic Characteristics ...................... 109

S-IB Stage Propulsion Characteristics ....................... 110

S-IVB Stage First Burn, First Orbital Coast and S-IVB Stage

Second Burn Propulsion Characteristics ...................... lll

Orbital Vent Sequence and Impulse History ................... 116

iY

Table

Appendix B:

IB

2B

3B

Appendix C:

IC

2C

3C

_c

LIST OF TABLES (Cont'd)

Description Page

"Guidance Presettings"

S-IB Stage Steering Program ................................. 125

S-IB Pitch Attitude Command ................................. 126

IGM Presettings ............................................. 127

"Launch Vehicle Trajectory Listings, English Units"

S-IB Stage Flight Data ...................................... 131

S-IVB Stage First Burn, First Orbital Coast and S-IVB Stage

Second Burn Data ............................................ 136

Second Orbital Coast Data ................................... 161

S-IB Stage Re-entry Data .................................... 170

v

.LIST OFILLUSTRATICNS

Fizure Description

1

2

3

7

8

9

iO

II

12

IA

15

16

17

Altitude vs. Flight Time:

Altitude vs. Ground Range:

Velocity vs. Flight Time:

Boost Flight Data

Boost Flight Data

Boost Flight Data

eeeeee.eeeBe

eeeee.eeeee

eeeeeeseeeee

Space Fixed Path Angle vs. Flight Time:

Boost Flight Data .......................................

Earth Fixed Path Angle vs. Flight Time:

Boost Flight Data .......................................

Pitch Attitude Steering Command History:

S-IB Stage Flight Data ..................................

Vehicle Pitch Attitude Rate History:

S-IB Stage Flight Data ..................................

Pitch Attitude Error History:

S-IB Stage Flight Data ..................................

Pitch Angle of Attack History:

S-IB Stage Flight Data ...................................

Dynamic Pressure History: S-IB Stage Flight Data ........

Longitudinal Acceleration History:

S-IB Stage Flight Data ...................................

Pitch Attitude Steering Command History:

S-IVB Stage Flight Data, First Burn ......................

Yaw Attitude Steering Cmmnand History:

S-IVB Stage Flight Data, First Burn ......................

LcmgitudinalAcceleratien History:

S-IVB Stage Flight Data, First Burn ......................

VehicleAttitude Rate History:

S-IVBStage Flight Data, First Burn ......................

Attitude Error History:

S-IVB Stage Flight Data, First Burn ......................

Angle of Attack History:

S-IVB Stage Flight Data, First Burn ......................

68

69

70

71

72

73

7_

75

76

77

78

79

80

81

82

83

8_

vi

LIST OF ILLUSTRATIONS (Cont'd)

Figure

18

19

2O

21

22

23

2&

25

26

27

28

29

30

31

Appendix A:

IA

2A

3A

AA

5A

6A

Description Page

Dynamic Pressure History:

S-IVB Stage Flight Data, First Bum ........................... 85

Altitude History: First Orbital Coast Phase ................... 86

Space Fixed Velocity History:

First Orbital Coast Phase ..................................... 87

Pitch Attitude History-

First Orbital Coast Phase ..................................... 88

Altitude History:

S-IVB Stage Flight Data, Second Burn .......................... 89

Space Fixed Velocity History:

S-IVB Stage Flight Data, Second Burn .......................... 90

Space Fixed Path Angle History:S-IVB Stage Flight Data, Second Burn .......................... 91

Pitch Attitude History:

S-IVB Stage Flight Data, Second Burn .......................... 92

Altitude History: Second Orbital Coast Phase .................. 93

Space Fixed Velocity History:Second Orbital Coast Data ..................................... 9_

Pitch Attitude History:Second Orbital Coast Data ..................................... 95

Tracking Summary: Launch Phase ............................... 96

Tracking and Telemetry Sumnary: Orbital Phase ................ 97

H-I Engine Out Performance Capability ......................... 98

"Launch Vehicle Characteristics and Flight Environment"

Vehicle Profile ............................................... 117

H-I Engine Thrust Decay ....................................... 118

J-2 Engine Thrust Buildup, First Burn ......................... 119

J-2 Engine Thrust Dec_v, First Burn ........................... 120

J-2 Engine Thrust Buildup, Second Burn ........................ 121

J-2 Engine Thrust Decay, Second Burn .......................... 122

vii

LIST OF ILLUSTRATIONS (Cont'd)

Figure

7A

Description Pa_e

Mean Headwind/Tailwind Profile 123oooeeoooQoeeeoeoeoooeoooooooeooo

viii

DEFINITIONSANDSYMBOLS

Aerodynamic Heating Indicator

Aerodynamic Load Indicator

Altitude

Angle of Attack, Pitch

Attitude Error

Axial Force

Central Range Angle

Descending Node Argument

Dynamic Pressure

Earth Fixed Positic_

Earth Fixed Cross Range

f qVr dt q --dynamic pressure_/2--_t I Vr = relative velocity

a t = total angle of attack

Product of dynamic pressure and angle of attack.

Vehicle altitude above the referenced ellip-

soid measured along the geocentric positionvector.

Angle between the pitch plane component of the

relative velocity vector and the longitudinal

axis of the vehicle, measured positive nose up.

Difference between the vehicle attitude (Pitch,

Yaw and Roll Eulerian Angles) and the vehicleattitude command.

Component of the resultant aerodynamic forcealong the vehicle longitudinal axis (X axis

of PASCS 8a), measured positive toward thetall of the vehicle.

Angle between instantaneous space fixed

position vector and space fixed positionvector at Guidance Reference Release.

Angle measured in the equatorial plane between

the orbit descending node and the space fixedlaunch meridian defined at Guidance Reference

Release.

Cc_onent of the resultant aerodynamic force

along the relative velocity rectory, ama-

suredpositive opposite to the velocity vector.

x (Density) x (Relative Velocity) 2

Position vector components in an earth-fixed

pad-centered plumbline coordinate system.The Xe axis is coincident with the reference

ellipsoid normal, positive upward. The Ze

axis is parallel to the earth-fixed aiming

azimuth and is poeitive downrange. The Ye

axis completes a right handed system. (PASCS i0)

Ye cce_onent of PASCS i0 position vector.

ix

B

DEFIMITIONS AND STMBOLS (Cont'd)

Earth Fixed Flight Path

Angle

Earth FJ_ed Velocity

Earth Fixed VelocityMapitude

Aslmuth

Geocentric Declination

Geodetic Latitude

Gr_nd _ange

Inclination

Longitude

L0_Itudinal Acceleration

Mach M_ber

,Angle between the earth fixed velocity vector

and the earth fixed geocentric position vector

(PASCS ii), measured positive downrange fromthe position vector.

Velocity vector components in PASCS 10.

_e 2 . 2 . 2+ Ye + Ze

Angle defining orientation of the space

fixed coordinate system downrange axis, Zs,

at Guidance Reference Release, measuredpositive east of north in plane normal to

the space fixed Xs axis at Guidance Ref-erence Release.

Angle between the geocentric radius vector

and the true equatorial plane, measured

positive north of the equator.

Angle between the reference ellipsoidnormal through the point of interest and

the true equatorial plane, measured pool-tire north of the equator.

Surface distance from launch site to the sub

vehicle point, positive east (0° - 180°).

Angle between the inetantaneou| flight planeand the equatorial plane.

Angle between the Greenwich meridian plane

and the projection of the geocentric poei-

tion vector in the equatorial plane, measuredpoeitlve east cf Greenwich.

That part of the total measurable acceleration

directed along the longitudinal axis of thevehicle.

(Relative Velocity) (Local Speed of Sound)

X

DEFINITION3 AND ST_BOL5 (Cont'd)

_+

o,

X S

Launch Meridia.

1 N|

I

Z$

Xm : (-_r)l ((_Y_ (_P)2 Xs

Xm

XM X I _ r

x' xs

" ,,,,,,7_,,, • _ -z,Zm

Pitch Yaw Rol I

xl

DEFINITI_S AND SYMBOLS (Cont 'd)

Mass

Normal Force

Pitch, Yaw, Roll

Radius

Range

Relative Velocity

Space Fixed Position

Space Fixed Cross Range

Space Fixed Flight Path Angle

Space Fixed Velocity

Space Fixed Velocity

Magnitude

Time

Thrust

Weight

Mass of the vehicle.

Component of the resultant aerodynamic force

normal to the vehicle X axis, and in the X-Z

plane (PASCS 8a), measured positive towardPosition I.

Eulerian angleBof vehicle attitude measured

with respect to the space fixed coordinate

system. Vehicle attitude is defined by the

ordered rotation of pitch, yaw, and roll,respectively. (See illustration)

J Xs + ys 2 + Zs2

Surface distance from launch site to the sub

vehicle point, positive east (O° - 180°).

Velocity relative to the atmosphere (includeswind velocity).

Position vector components in a spaced fixed,

earth centered, plumbline coordinate systemdefined at Guidance Reference Release. The

Xs axis is parallel to the reference ellip-

soid normal which passes through the launchsite. The Zs axis is parallel to, and posi-tive in the same direction as the earth-fixed

firing azimuth. The Ys axis completes the

right handed system. This is Project Apollo

Standard Coordinate System !3. (PASCS 13.)

Ys co._onent of PASCS 13 position vector.

Angle between the space fixed velocity vectorand the radius vector (PASCS 13), measured

positive downrange from radius vector.

Velocity vector components in PASCS 13.

Instantaneous flight time referenced tofirst motion.

Total effective thrust magnitude.

J FTX + +FTy 2 FTZ 2

Weight of vehicle in pounds.

xii

SUMMARY

This report documents the AS-206 S-IVB Restart Alternate Mission _/V

Operaticmal Flight Trajectory. Trajectory data are tabulated for allphases of f_ for which the Saturn IB Launch Vehicle has a func-tional requirement. A cce_rehensive summary of the launch vehiclecharacteristics and flight environment is also presented.

The predicted S-IB, S-IVB stage first burn (_dance Cutoff Signal) and

S-IVB stap second burn (Depletion Cutoff Signal)end conditlcr_ aresummarized below:

Guidance

Cutoff SienalDepletion

Flight Time (sec) 143.217 508.122 ii,&67.962

Altitude (m) 67,566. 190,872. 216,168.

Space Fixed

Velocity (_sec) 2,598.6& 7,783.58 lO,A13 •55

Space Fixed

Path AnKle (deg) 63.820 90.007 87.187

Range (m) 73,984. i,A85,602. -315,701.

The nominal weight in orbit is predicted to be 67,675 pounds, of _hich31,167 pounds is useable S-IVB stage propellant. Under nce_%al flowratecriteria, this propellant is depleted 76.962 seconds after the S-IVB stage

restart signal is received. This includes a "full burn" period, 90_ thrust

level to propellant depletion, of 6_.A62 seconds.

S-IVB stage restart occurs after an orbital coast phase of approximatelytwo revolutions (10,875 seconds). During this period a local horisontalvehicle attitude is maintained and the Constant Vent System (CV$) is open.

The S-IVB stage restart sequence is Time Base 5 (T_5) dependent. TB5 is

established by navigational sighting ef the Guaym_ tracking station duringthe second revolution. The vehicle inertial attitude cc_Bmd is frozen

30 seccm_ prior to second ignition and held until 30 sec_da after pro-pellant depletion. For the balance of the lifetime of the batteries, alocal horizontal attitude il maintained.

-1-

The S-IVB stage Flight Performance reserve for this mission is approximately

1,200 pounds. Therefore, the predicted useable propellant available at or-

bit insertion may deviate by 1,200 pounds. This corresponds to a second

burn time deviation of approximately 2.5 seconds.

An H-I engine out performance evaluation has been conducted for this mission.

Analysis of the results reveals that the most severe case, engine failure at

liftoff, would decrease S-IVB stage second burn time capability by approxi-

mately eight seconds. The controllability of this vehicle with H-1 enginefailure will be determined at a later date.

-2-

.SECTION 1

/NTRODUCTION

The AS-206 S-IVB Restart Alternate Mission L/V Operational Flight Trajectory

is presented in this document. By definition, the Launch Vehicle OperationalTrajectory includes all phases of flight for which the S-IB stage and theS-IVB/IU stage have functional requirements.

In addition, comprehensive sulaaries of vehicle data, sub-systems character-

istics, and the guidance and control modes are presented herein.

SECTION2

MISSIONDESCRIPTION

2.1 MISSION 0BJECT!V_ES: The basic purpose of the Apollo Saturn 206 S-IVBRestart Alternate Mission is to place the S-IVB stage into orbit and test

its restart capability, simulating the AS-5OI mission profile. In the event

S-IVB restart problems occur in the early Saturn V flights, this missionwill be flown to help correct or solve the problems. The primary objective

of the SA-206 Launch Vehicle is to insert the S-IVB/IU/Payload configuration

into a near earth i00 nautical mile circular orbit. The payload consists of

a Spacecraft LM Adapter (SLA) and a 25 ° Nose Cone (NC #2). (See Reference I)

In the event of an S-IB engine premature shutdown, the desired orbit may be

attained by using the remaining seven S-IB engines and S-IVB burn to orbit.The effects of S-IB engine premature shutdown on mission capability are

shown in Figure 31.

2.2 MISSION GROUND RULES AND CONSTRAINTS: The following mission criteria,vehicle constraints, and trajectory constraints have been imposed on this

trajectory:

i) launch from AFETR Pad 37 B.

2) Pad oriented launch azimuth of 90 degrees east-of-north.

3) Flight azimuth of 72 degrees east-of-north.

_) S-IB stage tilt program defined in Table IB.

5) S-IVB cutoff conditions for i00 nautical mile circularorbit insertion.

6) Commanded pitch and yaw attitude rate limit of one degree

per second.

7) Average mean head/tailwlnd for December through April.

8) NC/SIA remains attached to the S-IVB/IU for restart.

9) First S-IVB burn Engine Mixture Ratio (EMR) 5.5:1.

i0) Second S-IVB burn EMR _.5:1 for 13 seconds, then closed loop

Propellant Utilization (PU) to depletion.

n)

i2)

Simulate as cloee_T as possible the AS-501 profile, restartenvironment and restart sequence.

Open loop guidance during S-IVB second burn with propellantdepletion cutoff.

-4-

SECTIC_3

IAUNCHVEHICLEANDENVIRONMenTDESCRIPTION

3.1 CONFIGURATION: The SA-206 Saturn IB Launch Vehicle consists of a S-IB

first stage, a S-IVB second stage, an instrument unit, and a payload. For

this mission the payload consists of a Spacecraft LM Adapter and a 25 ° Nose

Cone. There will be no spacecraft or LM. An outboard profile of the complete

configuration is shown in Figure IA, Appendix A.

3.2 MASS CHARACTERISTICS: The SA-206 vehicle mass characteristics are de-

fined in Reference 2_ Table IA presents a vehicle weight breakdown of the

launch vehicle. These data are consistent with Reference 2 and the trajec-

tory presented herein. Tables 3A, and _A present a time history of the

vehicle mass and the associated center of gravity and moment of inertia

data for the S-IB stage and the two S-IVB burns, respectively.

3.3 AERODYNAMIC PROPERTIES: Powered Flight aerodynamic data for the S-IB

stage and S-IVB stage first burn were obtained from Reference 3. Flight

time histories of the S-iB stage aerodynamic data are presented in Table 5A.

Orbital drag data was extracted from Reference A and was used for the orbital

coast phaseaand the S-IVB stage second burn.

3.6 PROPULSION SYSTEMS: The S-IB stage is powered by eight H-I engines

which have a nominally rated sea level thrust of 205,000 pounds each. The

predicted nominal thrust magnitude history for each H-I engine, including

thrust decay and the associated turbine engine thrust, were obtained from

Reference 5. The thrust magnitude time history for each H-I engine is de-lineated in Table 6A. Figure 2A depicts the thrust decay histories.

The S-IVB stage is powered by a single J-2 engine which has a rated vacuum

thrust of 200,000 pounds at a nominal mixture ratio of 5:1. However, a

5.5:1 engine mixture ratio is maintained during the first S-IVB stage burn

which results in a relatively high thrust level throughout this flight per-

iod. The predicted nominal first burn J-2 engine thrust history from the

90% thrust level time point to the time of the guidance cutoff signal was

obtained from Reference 6. The thrust buildup and thrust decay historieswere obtained from Reference 7. Table 7A presents a stmmmry of the first

burn J-2 engine thrust history. The J-2 thrust buildup and decay histories

for the first burn are depicted in Figures 3A and _A.

The predicted nominal J-2 engine second burn thrust history from the 90%

thrust level to propellant depletion was obtained from Reference 8. The

thrust buildup and thrust decay histories were obtained from Reference 7.

Table 7A presents a summary of the J-2 engine thrust history. The J-2

thrust buildup and decay histories for the second burn are depicted inFigures 5A and 6A.

-5-

Four solid propellant retro-motors (TE-M-29) mounted on the S-IB/S-IVB inter-stage provide thrust to decelerate the S-IB stage after separation. The retro-motors are rated at a nominal thrust level of 36,720 pounds each (Reference 9 ).

Three solid propellant ullage motors mounted on the S-IVB stage aft skirt pro-

vide a positive acceleration for the S-IVB stage to settle propellants for J-_-_engine start. The ullage motors rated thrust is 3,A60 pounds each (Refm

erence lO).

The S-IVB Stage A_xiliary Propulsion System (APS) consists of two modules.

Each module contains three 150 pound thrust (vacuum) hypergollc rocket engines.

This system provides roll control during both J-2 burn phase% and pitch, yaw

and roll control during orbital coast phase.

3.5 ENVIRONMENT DESCRIPTION: The 1963 Patrick Reference Atmosphere model de-

fines the atmospheric properties incorporated in the trajectory simulation.

The earth mmdel and potential function are those of the Fischer Earth Model.The wind profile is an average of the December through April mean headwlnd/

tailwind profiles defined in Reference ll. It is depicted in Figure 7A.

-6-

SECTION&

GCblTROI, AND GU_C_;

The Saturn IB inertial guidance system performs navigation evaluations, issues

c41screte commands, initiates guidance and control functions, and issues steering

ccmm_nds to guide the launch vehicle to the prespecified targeting conditions.

These ftmctions are accomplished by the AS-206 Flight Program which is

stored in the Launch Vehicle Digital Computer (LVDC). Inputs to the LVDC for

navigation and steering co_and evaluations are the predetermined constants

for the different guidance modes and the inertial velocity increments sensed

by the stabilized platform accelerometers.

&.l GUIDANCE: Guidance of the AS-206 Launch Vehicle into orbit and throughout

the orbital phases of active attitude control is divided into three distinct

phases: (i) Pre-IGM; (2) IGM; and (3) Orbital.

The Pre-IGM phase guidance provides pitch, yaw and roll vehicle attitude com-mands as a function of the time from liftoff to the time of IGH initiation.

The S-IB stage pitch program polynomials for this mission are delineated in

Appendix B, Table IB. Also included in Table IB is a time history of the yaw

and roll attitude conm_nds. A history of the pitch attitude steering conmand

generated by the pol_nomials is given in Table 2B.

In the Iterative Guidance Mode (IGM) phase for this mission, a one-stage three-

dimensional formulation of the IGH equations and logic provides active guid-

dance of the S-IVB stage in pitch and yaw from the time of IGM initiation, TB3

+ 17.0 seconds, to J-2 cutoff. The commanded roll attitude is zero. The IGM

equations and logic progra,ned for the LVDC Flight Program are defined in

Reference 12. The IGM presettings for the mission are given in Appendix B,Table 3B.

The orbital guic_nce mode provides pitch, yaw and roll attitude commands for

the planned maneuvers during the orbital coast phase and second J-2 burn phase

of the mission. The planned maneuvers for this mission consist of :

l) At 10 to 20 seconds after insertion, maneuver into local horizontal

plane, nose leading, fin 1 down and hold this local attitude until30 seconds prior to second ignition_

2) At 30 seconds prior to second ignition, freeze the current vehicle

inertial attitude for the entire second burn period;

3) 30 seconds after second J-2 cutoff, the local horizontal, nose

leading, f_n, i down attitude is reattained and held _hroughoutthe mission lifetime. (See Reference i)

-7-

_.2 CGNTROL SYSTEMS : Pitch, yaw and roll attitude control are maintained by

the four swivelable H-1 engines during the S-IB stage of powered flight. The

control law, gains, and network characteristics for the S-IB stage control

system are defined in Reference 13.

The J-2 engine provides pitch and yaw attitude control throughout both S-IVB

stages of powered flight. Roll attitude control is maintained by the AuxiliaryPropulsion System (APS). The control law, gains and network characteristics

of the S-IVB stage control systemm are defined in Reference 13.

Pitch, yaw and roll attitude control are provided by the APS during orbital

coast phases.

-8-

SECTION5

lAUNCH VEHICLE TRAJECTORY

The nominal sequence of events for the AS-206 S-IVB Restart Alternate Mission

_V Operational Flight Trajectory is summarized in Table 1. It was derived

from References IA and 15.

Table 2 provides a summary of trajectory parameters at pertinent events fromliftoff to loss of attitude control. Convenient summaries of the end condi-

tions of flight for the S-IB, S-IVB first burn, first orbital coast and S-IVB

second burn phases of flight are presented in Tables 3, A, 5 and 6, respec-

tively. Tabulated listings of the trajectory,in metric units,are presented

in Tables 7 -iO. Corresponding tabular listings, in English units, are

given in Appendix C. Graphical displays of the ascent trajectory are shownin Figures I through 5.

The associated data tapes required for distribution by MSFC, R-AERO-F, areidentified as follows :

Trajectory Listing (Printout Tape):

CCSD/Slidell Reel No. 8800

MSFC Copy Reel No. IOA53 j

Data Tape (B-7 Tape):

CCSD/Slidell Reel No. 5&_l

MSFC Copy Reel No. O153

5.1 BOOST PHASE: The trajectory boost phase consists of the S-IB stage

powered flight and the S-IVB stage first burn. The phase begins at GuidanceReference Release (GRR) and ends at Orbit Insertion (O1).

5.1.1 S-IB Sta_e Powered Flight: Tabulated listings of trajectoryparameters for this stage are presented in Table 7. It is initiated

at Guidance Reference Release (GRR), which is ass_ed to be 5 secondsprior to launch (first motion). The time of umbilical disconnect and

the corresponding establishment of Time Base One (TBI) is assumed to

be 0.2 seconds after first motion. This stage ends at S-IB/S-IVB

physical separation, which is assumed to be 1.379 seconds after Out-board Engine Cutoff signal (OECO).

A time history of the S-IB stage pitch attitude steering cc_nd is

depicted in Figure 6. Figures 7 and 8 present summaries of the re-

suiting vehicle pitch attitude rate and attitude error. A summary

of the pitch plane angle of attack is presented in Figure 9. Figure

I0 presents a summary of the dynamic pressure history. The longitudi-nal acceleration history is depicted in Figure 11.

-9-

In order to establish a more realistic nominal trajectory prediction,a constant thrust bias equal to + 0.7 per cent of the vehicle sealevel longitudinal thrust has been included in the S-IB stage tra-jectory. This action is an attempt to minimize the effects of anapparent systematic shift in the ground to flight test performancelevel.

5.1.2 S-IVB StaRe First Burn: Tabulated listings of this segment of

the boost trajectory are presented in Table 8. The segment begins atS-IB/S-IVB stage separation and ends at orbit insertion. Orbit inser-

tion is defined to be at Guidance Cutoff Signal (GCS) plus 10 seconds.

GCS occurs when the space fixed velocity magnitude equals a prespeci-fled value of 7783.58 m/sec. This phase of the trajectory includes

the ullage rocket burns, J-2 engine thrust buildup, mainstage burn

with ullage case Jettisoning, J-2 thrust decay and ullage venting.

The pitch and yaw attitude angle steering commands during this S-IVB

powered flight phase are depicted in Figures 12 and 13. The accelera-

tion history is depicted in Figure 14. Trajectory parameters pertinent

to an analysis of the trajectory from S-IB/S-IVB separation to the timeof active control are depicted in Figures 15 - 18.

It should be noted that the vehicle pitch attitude error history, pre-

sented in Table 8, shows larger excursion than observed in previous

flight predictions. This is primarily due to vehicle center of gravity

misalignment caused by the S-IVB stage restart hard, re installation.

When misalignment is sensed,_ the attitude commands to the control sys-tam are biased by the LVDC steering misalignment control logic so thatthe desired vehicle attitude is maintained.

5.2 ORBITAL FLIGHT PHASE: The orbital flight phase is initiated at orbitinsertion and terminates at loss of S-IVB/Payload attitude control. This

phase consists of an orbit coast period of approximately two orbits, a sec-ond S-IVB stage burn and a final coast period.

5.2.1 First Orbital Coast Period: The first orbital coast period isinitiated at orbit insertion and is terminated at Time Base Five (TBS)

plus ASO seconds (J-2 engine start signal). TB5 is established by the

LVDC as a result of navigational sighting of Guaymas on the second

revolution. Guaymas sighting time is defined as the time at which thevehicle enters the cone described by a 5° elevation angle generated

from Guaymas. Tabulated listings of the trajectory for this period

are included in Table 8. Histories of altitude, velocity and pitch

attitude for this period are displayed in Figures 19 through 21.

5.2.2 S-IVB Stage Second Burn: The S-IVB stage second burn is

initiated at TB5 + _50 seconds with an eight second fuel lead through

the thrust chamber prior to ignition. Ignition occurs at TB5 +A58

-1o-

seconds and the 90%thrust l_.wl is attainted 2.5 seconds later. ThePropellant Utilization (PU) valve is held _ a hard over position pro-riding a A.5:l engine mixture ratio until 13 seconds after engine start

at which time closed loop PU control begins. This burn is terminated

by depletion of useable propellants. The nominal amount of useable

mainstage propellant on board for the second burn is 31,167 lbs. Under

predicted flowrates, this amount is depleted 7_.962 seconds after therestart signal is received or 6A._62 seconds al_ter the 90% thrust level

is attained. The Flight Performance Reserve (FPR) for this mission is

approximately 1,2OO lbs. Therefore, the nominal useable propellant for

the second J-2 burn may deviate by this amount producing a correspondingchange in burn time of approximately 2.5 seconds. Tabulated listing of

the trajectory from second burn engine start to lO seconds after J-2

engine depletion shutdown are included in Table 8. Histories of alti-

tude, velocity, flight path angle, and vehicle pitch attitude duringthis period of the trajectory are presented in Figures 22 through 25.

Du_-Lng this burn, open loop guidance is used. Therefore, the vehicle

attitude commands are not biased by the LVDC steering misalignment logic

to compensate for vehicle center of gravity displacements. Thus, the

displacement caused by the S-IVB restart package installation produces

vehicle attitude errors which are not corrected by the guidance scheme.

5.2.3 Second Orbital Coast Period: Table 9 presents tabulated listings

of trajectory parameters for the second orbital coast period of the

Launch Vehicle Trajectory. This period extends from J-2 engine deple-

tion shutdown plus lO seconds to loss of S-IVB/Payload attitude control.

Histories of altitude, velocity and pitch attitude for this period aredisplayed in Figures 26 through 28.

5.3 SPENT S-IB STAGE TRAJECTORY: The re-entry trajectory for the spent

S-IB stage is summmrlzed in Table 10. This phase of the S-IB stage tra-Jectory is initiated at S-IB/S-IVB separation and includes the retro-rocketburns.

5.A TRACKING SUMMARY: Radar and telemetry coverage during ascent and orbit

are provided by the stations listed in Tables ll and 12. Summaries of the

tracking and telemetry coverage for each station are presented in Figures29 and 30.

5.5 .LAUNCH VE_ICLE PROPULSION PERFORMANCE CHARACTERISTICS: The predicted

S-IB and S-IVB stage performance characteristics are presented in Table 2A.

These data are time averages of the detailed vehicle performance data re-ferenced herein.

5.6 S-IB STAGE _GINE OUT PERFORMANCE CAPABILITY: Free a performance stand-

point, the effect of an S-IB stage engine failure may be offset by utilizing

the seven remaining H-I engines and the S-IVB stage engine to attain the

specified orbit. The effect of an S-IB stage engine failure on available

second burn propellants is depicted in Figure 31 as a function of enginefailure time. These data indicate that for an otherwise nominal flight an

engine out at liftoff would only reduce the nominal S-IVB stage second burn

tlme by approximately 8 seconds.

-ii-

SECflC_ 6

REFERENCES

le

e

_o

e

e

e

e

fOe

lle

"Minutes of Backup _S-206 S-IVB Restart Mission", I-I/IB-E-335-67,

6 June 1967; "AS-206 S-IVB Restart Alternate Mission Flight Program

Definition", R-ASTR._NG-56-67, 17 July 1967.

"Preliminary Predicted Mass Characteristics, Saturn IB Vehicle AS-

206, Part IXI, Depletion Cutoff", BB-3.8.0-!-MO3, 31 July 1967.

"Summary of Saturn IB/LEM, AS-206 Static Aerodynamics", TN-AP-66-150Volume l, 20 December 1966.

"Study of Drag Coefficients For Unusual Vehicle Configurations" AprilProgress Report, IMSC/HREC A782759.

S-IB Stage Propulsion Prediction, CCSD B5 Reel No. 6755. (B6 Reel No.9351/8_9)

S-IVB Stage Propulsion Prediction, CCSD Reel No. 10028.125 )

(_FC Reel

"Thrust Increase Envelope, Test No. 313-O9A, Engine SNJ-2OA6";

Saturn IB J-2 Engine Characteristics", R-P&VE-PPE-66-M-90, 11 May 1966.

S-IVB Stage Propulsion Prediction, CCSD Reel No. 2072. (_FC Reel No. 10)

"Data for use in S-IB-03 and Sub Vehicle Specifications and Future Se-

paration Studies", MBFC, R-P&VE-PFE-66-M-82, 21 June 1966.

"S-IVB Ullage Rocket Typical Thrust Versus Time (Vacuum 70°F) '',R-P&VE-PPS-65-M-65, Figure 16, 5 May 1965.

"Cape Kennedy Wind Component Statistics 0-60 km Altitude For 72 Degree

Flight Azimuth For Monthl_ and Annual Reference Periods", R-AERO-Y-90-66,23 March 1966; "Latest Wind Estimates Fran 80 _n to 200 _n Altitude Re-

gion at Mid-Latitudes", NASA TMX-5306_, 16 June 196_.

"LVDC Equation Defining Document for the AS-2OT/AS-20@ FliBht Programs",MBFC No. III-_-_23-9, November 1966.

-12-

°.

_CES (Cont Vd)

_o

_e

15.

"Control Gains and Shaping Networks for Saturn AS-206, S-IB and S-IVB

Stages", R-ASTR-F-66-162, 6 September 1966 as revised by Reference 14.

R-AERO-FMR letter, "AS-206 S-IVB Restart Alternate Mission OperationalTrajectory Data", 21 Ju_y 1967.

"Saturn IB Restart Mission Flight Sequence "pDrawing Number IOM30766,26 June 1967.

-13-

TABLE 1

AS-2O6 S-IVB RESTART ALTERNATE MISSIGN I/V OPERATIONAL FLIGHT TRAJECTORY

FLIGHT SF_L_CE OF EgU_S

NGMIK%L FLIGHT TIME PROGRAM

- 0:0:05.0 - 5_00 ---

- 0:0:03.1 - 3.10 ---

0:0:00.0 O.O0 ---

0:0:00.2 0.20 (0.0) I

0:0:I0.2 10.20 (i0.0) I

0:1:00.2 60.20 (60.0) 1

0:1:11.0 71.00 ---

0:1:35.2 95.20 (95.0) 1

0:2:00.2 120.20 (120.O) 1

O:2:12.3 132.25 (132.1) 1

0:2:12.3 132.30 (132.1) 1

Guidance Reference Release (GRR).

Initiate S-IB Mainstage Ignition

Sequence.

First Motion.

Lift-off Signal; Initiate Time Base i.

Initiate Pitch and Roll Maneuvers.

Control Gain Switch Point.

Maximum Dynamic Pressure.

Control Gain Switch Point.

Control Gain Switch Point.

Tilt Arrest.

Emable S-IB Propellant Level Sensors.

O:2:15.8 135.8& (0.0) 2

0:2:18.8 138.8& (3.0) 2

o:2:m.e (0.0)3

0:2:23.1 I_3 .l& (1.3) 3

0:2:23.2 1_ .22 ---

(z.J.) 3

Level Sensor Activation;Initiate Time Base 2.

Inboard Engine Cutoff (IF.DO).

Outboard _ins cutoff (OECO);Initiate Time Base 3.

Separation Signal.

S-IB/S-IVB Physical Separation;Control Gain Switch Point.

-14-

TABLZ 1 (Ccnt'd)

AS-206 S-IVB RESTART ALTERNATE MISSION I/V OPERATIONAL FLIGHT TRAJECTORY

FLIGHT SEQI_CE OF EVENTS

FLIGHT

0:2:24.5 IA4.5& (2.7) 3

0:2:26.9 ]46.89 ....

0:2:27_9 147.9& ----

0:2:30.5 150.5& (8.7) 3

0:2:35.1 155.14 (13.3) 3

0:2:38.8 158.8& (17.0) 3

0:4:A7.9 287.9A (]&6.10) 3

0:8:28.1 508.12 ---

0:8:28.3 508.32 (0.0) A

0:8:38.1 518.12 ----

0:8:50.0 530.00 ( 21.88)_

3:2:23.0 i09&3. O0 (0.00) 5

3:8:53.0 11333.00 (390.00) 5

3:8:5&.2 11334.20 (391.20) 5

3:9:23.0 11363.00 (A20.OO) 5

3:9:53.0 11393.00 (&50.O0) 5

3:9:56.0 11396.00 (A53.00) 5

3 :i0:01.0 11401.00 (A58.00) 5

3 :i0:03.5 11403.50 ----

3 :lO:o6.0 11406.00 (463.00) 5

J-2 Engine Start Command.

Ullage Burn Out.

90% J-2 Thrust Level.

Command PU System Activation.

Jettison Ullage Rocket Motors.

Cummand Active Guidance Initiation.

Control Gain Switch Point.

Guidance Cutoff Signal (GCS).

Initiate Time Base &; Begin CVS LH2

Vent. (Reflects an approximate 0.2

second systems delay)

Orbit Insertion.

Begin Local Horizontal Attitude Hold.

Second Guaymas Sighting; Initiate TimeBase 5.

Begin Helium Ullage Vent Through CVS.

End LH2 Vent.

Inertial Attitude Freeze.

J-2 Start Ccmnand; Begin Fuel Lead.

End Helium Vent.

J-2 Ignltian.

90% Thrust Level.

Command PU System Activation.

-15-

TABLE 1 (Contld)

AS-206 S-IVB RESTART ALTERNATE MISSIC_ L/V OPERATIONAL FLIGHT TRAJECTORY

FLIGHT SEQUENCE OF EVENTS

FUGn P o mM

3:11:08.0 1/467.96 (0.00) 6

3:11:08.2 I/A68.16 ( 0.20) 6

3 :ll:08.& 1/468.36 (O.&O) 6

3:11:18.0 1/477.96 (10.00) 6

3:11:38.0 ii&97.96 (30.00) 6

3:13:08.0 11587.96 (120.00) 6

7:38: 3&O 27518.00 ---

EVENT

Propellant Depletion Cutoff; Ini-tiate Time Base 6.

Begin LH2 Vent.

Begin LaX Vent.

End LOX Vent.

Begin Local Horizontal Attitude Hold.

End I_2 Vent.

Loss of Attitude Control.

-16-

I

I

TABLE 3

AS-206 S-IVB RESTART ALTERNATE MISSION L/V OPERATIONAL FLIGHT TRAJECTORYS-IB STAGE END CONDITIONS OF FLIGHT

Flight Time (t): OECO + 1.379 seconds

(R)-Altitude:

Space Fixed Velocity (V):

Space Fixed Path Angle ( 0 ):

Space Fixed Flight Azimuth (AZI):

Earth Fixed Flight Azimuth (AZE):

Geocentric Declination ( 8 ):

Geodetic Latitude ( _ ):Longitude(_ ): (Po6.East)

i_3. 217 (sec)

6hh0820. (m)

67566. (m)

2598.6A (m/'s)

63.820 (deg)

75 ._.01 (deg)72.322 (deg)

28.576 (deg)28.736 (deg)

-79.8h5 (deg)

SPACE FIXED POSITION AND VELOCITY COMPONENTS

Xs = 6_39A61. (m)

Ys = 35_61. (m)

zs = 127_61. (m)Xs = 1099.5h (m/s)

_s = ns.5o (m/s)_e = _ 51.5s (m/s)

VEHICLE ATTITUDE AND ATTITUDE RATE

Pitch Attitude Angle (_p):

Yaw Attitude Angle (Roll Attitude Angle ( _R ):Pitch Rate ( _p_:YawRate ( BY):

Roll Rate ( @_):

-6o.896-0.069-0.002-0. Ol.1.

0.001-O.O02

(deg)(deg)(deg)(dee/s)(de_s)(deg/s)

-18-

TABLE

AS-206 S-IVB RESTARTALTERNATEMISSIONL/V OPERATIONAL FLIGHT TRAJECTORY

S-IVB STAGE _l_D CONDITIONS OF FLIGHT, FIRST BURN

Flight Time (t): GCSRadius (R):

Altitude:

Space Fixed Velocity (V):

Space Fixed Flight Path Angle ( _ ):

Space Fixed Flight Azimuth (AZI):

Earth Fixed Flight Azimuth (AZE):

Geocentric Declination ( 8 ):

Geodetic Latitude ( _ ):

Longitude ( _ ): (Pos. East)

Inclination (i) :

Descending Node Argument ( _ ):

508.122 (sec)

6563322. (m)

190872. (m)

7783.58 (m/s)

90.007 (deg)

83.815 (deg)

83.&72 (deg)

31.068 (deg)

31.233 (deg)

-65.489 (deg)

31.617 (deg)

119.079 (deg)

SPACE FIXED POSITION AND VELOCITY COMPONENTS

Xs = 6335504. (m)

Ys = 123660. (m)

Zs = 1709766. (m)

is = -2033.62 (m/s)

YS = /_.15.91 (m/s)

Zs = 7501.70 (m/s)

VEHICLE ATTITUDE ANGI/_

Pitch Attitude Angle ( _p ) = -97.136 (deg)

Yaw Attitude Angle ( _y ) = 2.813 (deg)

Roll Attitude Angle ( _R ) = -0.803 (deg)

OSCULATING CONIC PARAMETERS

*Perigee Altitude = 153.31 (km)

*Apogee Altitude = 185.18 (km)

Eccentricity = 0.0024

Se_i-MaJorAxls = 6547.41 (km)

True Anomaly = 182.96 (deg)

Period = 87.87 (mln)

* Referenced to Equatorial Radius (6378.16 km)

-19-

TABLE& (Cont'd)

AS-206 S-IVB RESTARTALTERNATEMISSIONL/V OPEK_TIONALFLIGHTTRAJECTORYS-IVB STAGE_D CONDITIONSOF FLIGHT, FIRST BURN

Flight Time (t): Orbit Insertion

Radius (R) :Altitude :

Space Fixed Velocity (V):

Space Fixed Flight Path Angle ( 8 ):

Space Fixed Flight Azimuth (AZI):

Earth Fixed Flight Azimuth (AZE):

Geocentric Declination ( 8 ):

Geodetic Latitude ( 4, ):

Longitude ( A ): (Pos. East)

Inclination (i) :

Descending Node Argummnt ( _ ):

518.122 (sec)

6563325. (m)190898. (m)

7793.03 (m/s)

89.999 (deg)

8A.223 (deg)

83.903 (deg)

31.138 (deg)

31.30A (deg)

-6&.7Al (deg)31.617 (deg)

119.080 (deg)

SPACE FIXED POSITION AND VELOCITY COMPONENTS

Xs = 631A711. (m)

Ys = 12781A. (m)Zs = 178&7&7. (m)

Xs = --212A.15 (m/s)

= (m/s)is = 7&86.A8 (m/s)

VEHICLE ATTITUDE ANGLES

Pitch Attitude Angle (_p ) =

Naw Attitude Angle ( 4¥ ) =

Roll Attitude Angle (_a) =

-97.3202.660

-.692

(deg)(deg)(deg)

OSCULATING CONIC PARAMETERS

*Perigee Altitude = 18A.98

*Apogee A_titude = 185.26

Eccentricity = 0.OO00Semi-Major Axis = 6563.28

True Anomaly = 108.33Period = 88.19

* Referenced to Equatorial Radius (6378.16 kin)

(km)(kin)

(kin)(deg)(rain)

-20-

TABLE 5

AS-206 S-IVB RESTART ALTERNATE MISSION L/V GPERATIONAL FLIGHT TRAJECTORYFIRST ORBITAL COAST PHASE END CONDITIONS OF FLIGHT

Flight Time (t): Second J-2 Start Command

Radius (R):Altitude:

Space Fixed Velocity (V):

Space Fixed Flight Path Angle ( 8 ):

Space Fixed Flight Azimuth (AZI):

Earth Fixed Flight Azimuth (AZE):Geocentric Declination ( 8 ):Geodetic Latitude ( _ ):

Longitude ( _ ): (Pes. East)

Inclination (i) :

Descending Node Argument ( @ ):

11393.0 (sec)6587268. (m)

21_A3 • (m)7780.88 (m/s}

90.015 (deg)95.7_3 (deg)

96.062 (deg)

31.1_A _detl31.309 (deg)

-89.088 (deg)31.617 (deg)

118.095 (deg)

SPACE FIXED POSITION AND VELOCITY COMPONENTS

Xs = 9_712SI. (m)

Ys = 2396A0. {mmtZs = 36606&3.

is = -&33&.85 (m/s)

_a = _5.78 (m/s)_.s = 6_s.12 (m/s)

VEHICLE ATTITUDE ANGLES

Pitch Attitude Angle ( Sp ) =

Yaw Attitude Angle ( _y ) =

Roll Attitude Angle ( $. ) =

-121.861

3.133

-i .978

(deg)

(deg)

(deg)

OSCULATING COMIC PARAMETERS

*Perigee Altitude =

*Apogee Altitude =Eccentricity =

Semi-Major Axis =

True Anomaly =Period =

208.71216.28

0.o0066590.66

333.587

88.75

* Referenced to Equatorial Radius (6378.16 kin)

(kin)(km)

(k,,)(deg)(rain)

-21-

TABLE 6

AS-206 S-IVB RE_T._T ALTERNATE MISSION L/V OPERATIC_AL FLIGHT TRAJECTORY

S-IVB STAGE END CONDITIONS OF FLIGHT, SECOND BURN

Flight Time (t) : Depletion Cutoff

Radius (R):Altitude:

Space Fixed Velocity (V):

Space Fixed Flight Path Angle ( 0 ):

Space Fixed Flight Azimuth (AZI):

Earth Fixed Flight Azimuth (AZE):Geocentric Declination ( 3 ):

Geodetic Latitude ( _ ):

Longitude ( A ): (Pos. East)

Inclination (i):

Descending Node Argument ( _ ):

11_67.962 (sec)658SSlS. (m)216168. (m)10_13.55 (m/s)

89.189 (deg)97.762 (deg)98.083 (deg)30.A60 (deg)30.623 (deg)-82.770 (deg)31.3_I (deg)

120.679 (deg)

SPACE FIXED POSITION AND _OCITY C_4P_S

za = _7s_2. (m)Ys = 266808. (m)Zs = AI8936A. (m)

is = -6518.51 (m/s)

ts = 272.23 (_s)

Zs = 8116.&6 (m/s)

VEHICLE ATTITUDE ANGLES

Pitch Attitude Angle ( Sp )

Yaw Attitude Angle ( _y )

Roll Attitude Angle ( _R )

= -127.583

= -1.977= -2.A31

(deg)(deg)(deg)

OSCULATING CONIC pARAMETERS

*Perigee Altitude =

*Apogee Altitude =

Eccentricity =

Semi-Major Axis =

True Anomaly =Period =

_9.16 (_=)5o55o.12 (km)

0.7926

31757.80 (_.)1.835 (deg)

938.72 (rain)

* Referenced to Equatorial Radius (6378.16 kin)

-22-

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Table 11

AS-206 S-IVB RESTART ALTERNATE MISSION L/V OPERATIONAL FLIGHT TRAJECTORITRACKING AND TELEMETRI STATION COORDINATES= LAUNCH PHASE

STATION

Telemetry

ODETICLATITUDE(l)(DEOS _SNO .)

Z,O.GITUDE(I)(VETOESEAST)

ALTITUDE ABOVE(l)ELLn SOZD

Cape Tel & 28.&63713 - 80.653029 0.00 (3)MILA-CIF 28.5&2366 - 80.6%3533 0.OO (3)Grand Bahama 26.62851_ -78.299_ 0.OO (3)

Grand Turk 21.&&6016 - 71.I_7500 O.OO (3)Bermuda 32.3&8102 - 6&. 653800 18 .OO

Antigua 17.137333 - 61.77_955 AI.20

Insertion Ship 22.0 - _&.O 0.00 (3)

C-Band Radar

MILA 28. &2A862 - 80.66_0& 12.O2

Patti ck 28.226553 - 80.599293 15.51

Grand Bahama 26.615778 - 78.3_7833 13.98

Grand Turk 21.&62890 - 71.13211& 28.00

Bermuda 32.3&8103 - 6&. 653801 2&. 31

Antigua 17 .I&AO32 - 61.792859 &9.37

Insertion Ship 22.0 - &A.O 0.OO (3)

GLOTRAC

GLOTRAC I 28.A13386 - 80.592263 10.95

Atlantic 3&. 881507 - 76.353_O_ 2.92

Bassett Cove 26.614552 - 78.323580 16.15

Grand Turk 21._33765 - 71.I&5032 21.OO

Bermuda 32.25&&88 - 6&.838675 87.09

ODOP

Transmitter (2) 28.&AA373 - 80.579973 5.14(1.3.l.7)

Notes:

1. All coordinates arc _._ferenced to Fischer Ellipsoid of 1960.2. ODOP tracks the S-IB stage duz_ng powered flight and after separation from the

S-IVB until loss of track at an elevation of zero degrees.3. An altitude of zero meters is assumed whenever a value for the actual station

altitude is not available.

-66-

Table 12

AS-206 S-IVB RESTART ALTERNATE MISSION L/V OPERATIONAL FLIGHT TRAJECTOEY

TRACKING AND TELEMETRY STATION COOP_INATES: ORBITAL PHASE

STATION

Telemetry

GEODETIC LATITUDE(l)

( DEGI=_ES NORTH)

L ITUDE(1) ALTITUDE ABOVE(1)

ELLIPSOID (METERS}

Cape Tel & 28.&63713 - 80.653029 O.OO (2)MILA-CIF 28.5&2366 - 80.6&3533 O.OO (2)

Grand Bahama 26.62851& - 78.29q:AiA 0.00 (2)

Grand Turk 21.&46016 - 71.iI_75OO O.OO (2)

Bermuda 32.3&8102 6i.653_60 18.00

Anti[ua 17.137333 - 61.77&955 &1.20Insertion Ship 22.0 - &h.O O.OO (2)

Canary 27.7&2797 - 15.598103 35.00

Ascension - 7.97A31_ - I&.392221 29.98Tanana rive -19.018056 A7.3OU4/_ 1375. OO

Carnarvon -2A. 8973 56 113.716067 6&. OO

Hawaii 22.125267 -159.667691 1/42. OO

Ship A 28.0 -138.O O.OO (2)

Guaymas 27.958&O6 -ii0.720792 18.00

Corpus Christi 27.655&OO - 97.380256 iO.OO

C-Band Radar

MILA 28. h2&862 - 80.66_/,O& 12.O2

Patrick 28.226553 - 80.599293 15.51

Grand Bahama 26.615778 - 78.3&7833 13.98

Grand Turk ZI.&62890 - 71.13211& 28.00

Be rmuda 32.3&8103 - 6&. 653801 2A. 31

Antigua 17 .I&4032 - 61.792859 &9.37

Insertion Ship 22.0 - &&.O O.OO

Canary 27.7&4861 - 15.602OOO 36.00Ascension - 7.95151& - l&.K12606 152.&3

Pretoria -25.9&3731 28.358&90 1622.&O

Tananarive -19. O180 56 &7.30&AA4 137 5.OO

Carna x-lon -2_. 897&O3 113.716078 62. OO

Woome ra -30.819728 -13 6.83 6989 151 •00

Hawaii 22.12209 2 -i 59.665383 ll&O. OO

Ship A 28.0 -138.0 O.OO

Point Arguello 3&. 582903 -120.561150 6&6.OOWhite Sands 32.358222 -IO6.36956& 1232.OO

(2)

(2)

Notes:

i. All coordinates are referenced to Fischer Ellipsoid of 1960.

2. A station altitude of lero is assumed when the actual value is unavailable.

-67-

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APP_D/.X A: "lAUNCH VEHICLE CHARACTERISTICS AND FLIGHT _VIR(X_MENT"

-99-

TABLE IA

AS-206 S-IVB RESTART ALTERNATE MISSION _V OPERATIC_AL FLIGHT TRAJECTORYv_IcLE WEIGHT__m

(Poem)

Nose Co_e

SIA Ring

Spacecraft IM AdapterInstrument Unit

S-IVB Stage, Dry

S-IVB Stage Residuals

Vehicle at End of LaX Vent, Second Burn

LGX Venting

S-IVB Thrust Decay Propellant

Vehicle at Propellant Depletion Cutoff

S-IVB Propellant Cons_ed

APS Propellant Cons_ed

Vehicle at "90% Thrust", Second Burn

S-IVB GN2 Start Tank

S-IVB Buildup Propellant ConsumedPropellant Lead

Ullage Control Helium ExpendedVehicle at J-2 Restart Command

Ullage Control Helium ExpendedLGX Vented

Fuel Vented

Vehicle at Orbit Insertion

S-IVB Thrust Decay Propellant Consumed

Vehicle at S-IVB Cutoff, First Burn

S-IVB Propellant Consmned

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Ullage Cases

S-IVB "90% Thrust" Weight

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S-IVB Buildup Propellant Ccns_ed

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AS-206 S-IVB RESTARTALTERNATEMISSION_V OPERATIONALFLIGHTTRAJECTORYVEHICLEWEIGHTBREAKDOWN

(POUNDS)

S-IVB Detonation PackageUllage Propellant ConsumedS-IVB Aft FrameHardwareS-IB/S-IVB InterstageS-IB Dry WeightS-IB Residuals and ReservesS-IVB Frost ConsumedS-IB Frost ConsumedS-IB Seal Purge ConsumedS-IB Fuel Additive ConsumedS-IB Gearbox Lubricant ConsumedInboard Engine Thrust Decay Prpt ConsumedOutboard Engine Thrust Decay Prpt Consumed

To SeparationS-IB Mainstage Propellant Consumed

Vehicle Liftoff Weight

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6,667

8_,365

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1,000627

712

2,183

1,670

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TABLE 2A

AS-206 S-IVB RESTART ALT_TE MISSION L/V OPERATIONAL FLIGHT TRAJECTORY

IAUNCM V_ICLE PROPULSIGM PERFORMANCE CHARACTERISTICS

S-IB STAGE

Average Longitudinal Sea Level Thrust (lbs)

H-IEng£n.e Turbine

Engine #i 203914. 6&6.Engine #2 2031A8. 651.Engine #3 203232. 640.Engine #A 203367. 688.Engine #5 205745• 648.Engine #6 207935. 6_.Engine #7 205058. 649.Engine #8 20443I. 6AI.

20_560.

203799.

203872.

204055.

206393.

208579.

2057O7.

20_o72.

Total Average Sea Level Thrust (F): 1,6A2,037.

Flight Time Interval:

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Seal PurgeFuel Additive

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S-IVB STAGE

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Second Burn Flight Time Interval:

- 508.12 seconds

- 11467.96 seconds

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First Burn

Thrust Level

Second Burn

Thrust Level

Vacuum Thrust (Ibs)

Flowrat e (ib/sec)

Specific Impulse (sec)

229,916. 204,60&.

5&5.A6 479.85

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27 ibs

i133 Ibs

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Table 8A

AS-206 S-IVB RESTART ALTERNATE MISSIGN _/V OPERATIONAL FLIGHT TRAJECTORY

ORBITAL VENT SEQUENCE AND IMPULSE HISTORY

FLIGHT TIME (HR: MIN: SEC)

sta

0:8:28

EFFECTIVE IMPULSE

(Ib - sec)

3:8:53

3:11:08

3:11:08

3: 8: 5& LH2 Vent (CVS) 120000.

3:9:56 Helium Ullage Vent 2250.

Through CVS

3:13:08 IR2 Vent O.

3:11:18 Lax Vent 3600.

-116-

' -206 S-ZVB RESTART ALTERNATE MINION I/V OPERATI(RAL FLIGHT TRAJECTORYVEHICLE PROFILE

21.778" SPHERICAL RADIUS

t

NOSE CONE

t TELEMETRY

$LA

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RANGE SAFt

ANTENNA

HORIZON

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TUNNEL

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INSTRUMENTATION UNITJ

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PROPULSIONUNITS

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-117-

Fii_ure 2A

AS-206 S-IVB RESTART ALTERNATE MISSION 14_ OPEIIATIONAL FLIGHT TRAJECTC_Y

H-I _IGINE THRUST DECAY

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-118-

Figure 3A

AS-206 S-IVB RESTART ALTEmlATE KKSSIGN _/_ OFERATICRAL FLIGHT TRAJECTORY

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Figure 5A

AS-206 S-IYB RESTART ALTERNATE _STOH L/V (I_J_A?IOHALFLIGHT T_JECTO_J-2 _QI)O_ T_ST BUILDUP, SECOND BURN

FL|i_NT T| NI[4,4,SrcokDs

-121-

Figure 6A.

AS-206 S-IVB RESTART ALTEI_ATE MISSION L/V OPERATIONAL FLIGHT TRAJECTORY

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l_p_e 7A

AS-206 $-IVB RESTART ALTERNATE MIS3ION _V OPERATIONAL FI_GHT TRAJECTORY

MEAN HEA_WJ_qD/TAILM_D PROFILEDEmmm - APRIL A_

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APP_DIX B : "GU_T3_.NCE PIU_E'r'r_Nc, S t,

-I_4-

,Table IB

AS-206 S-IVB RESTART ALTERNATE MISSION L/V OPERATIONAL FLIGHT TRAJECTORYS-IB STAGE STEERING PROGRAM

For the time segment t - TI -<i0:Xy = O.Xz = O.

Xx = -0.314159 rad. (-18. degrees)

For the time segment i0< t - TI -_&3.:

Xy = AO + AlxT + A2xT 2 + A3X_

AO = .6A6A96 x lO-1 radians

A1 = -.5666A6 x 10-2 radians/second

A2 = -.801710 x i0-_ radians/second 2

A3 = °518111 x 10-6 radians/second3

×x = ×z = O.

For the time segment _3. < t - TI -<87.:

×y = BO + BIxT + B2xT2 + B3xT3

BO = .3_9258 x lO° radians

B1 = -.239a_8 x i0-1 radians/second

B2 = .291350 x 10-3 radians/seconds 2

B3 = -.179669 x 10-5 radians/second3

×x = ×z = O.

For the time segment 87. < t - TI _ 132.:

×y = CO + CIxT + C2xT 2 + C3x_

CO = .350808 x iO1 radians

C1 = -.108421 x i0° radians/second 2C2 = .937385 x 10-3 radians/second_

C3 = -.28626A x 10-5 radians/second _

×x = ×z = O.

For the time segment t - TI > 132.:

Xy = -1.O614721 radians

×x = ×z = O.

NOTE:

My:

T ___-

t:

TI:

Pitch attitude angle measured negative downrange frominertial vertical

t - TI + 1.803 G/4DTtime from GRR

time of liftoff (Time Base i), approximately 0.2 secondsafter first motion

1.803 GMDT: Bias to account for system delays.

-125-

Table 2]3

AS-206 S-IVB RESTART ALTerNATE MISSION E/V OPERATIONAL FLIGHT TRAJECTORYS-IB STAGE PITCH ATTITUDE CO_AND

FLIGHT _ :*PITCH ATTITUDE FLIGHT

_ fS_) CO_.AN.D,_ × c (DE(}) T_I_ (SEC)

O O..OOOO10 o.oooo12 -0.9692

-1.836316 -2.725918 -3.64132O -h.58OO

-5.5_O624 --6.522626 -7.5236

28 -8.5424

30 -9.578132 -10.62_34 -11.692836 -12.769538 -13.856840 -24.9533

42 -16.0581&A -17.1393

._6 -18.098548 -19.O697

50 -X_.027252 -_.975754 -21.920056 -22.8653

58 -23.816160 -24.7781

62 -25.75566& -26.7533

66 -27.7774

68 -28.83167O -_.9206

72 -31.0512

74 -32.2266

76 -33.451478 -34.7331

80 -36.0742

82m,86889O92949698

loo102lOh106108110112

116118120122

124126128130232132.25

IGM Initiation

* PITCH ATTITUDE

C_O_ND, X___)_

-37.4792-38.9564-40.5076

-41.7484-42.8309-43.8408

-44.7857-h5.6708--46.5065

-47.3OO5

-hS.0590

-48.791_-49.5053

-50.2081

-50.9081-51.6128

-52.3306

-53.0690

-53.8353-54.6392

-55.4868

-56.3856

-57.3464

-58.3741

-59.4762

-60.6646

-60.8179

-60.8179

* Xc is related to the Xy of Table IB by the following equation:

Xc = (t - TTTD) .X[i - X_(i - i) +Xy (i 1), whereC_DT

t = time from GRR (FLIGHT TIME +5 seconds)

TTTD = t of last Xy evaluation

Xyi = Xy evaluated at T

Xy (i- z) eval.ated at (z- 1 Gm T)CaMDT = LVDC casputation cycle = 0.75 seconds

-126-

o"

Table 3B

AS-206 S-IVB RESTART ALTERNATE MISSION L/V OPERATIONAL FLIGHT TRAJECTORYIGN PRESETTINGS

LVDC

SYMBOL

_n

Tli

T_

T 3

Vex&

Vex3

VT

XVT

YVT

ZVT

XVT

YVT

ZVT

ee

XVGT

e•

YVGT

_e

ZVGT

INITIAL

'VALUE UNIT_____S

17. sec

0.0 sec

3h9.5 sec

h73.0 sec

0.00 m/ssc

A132.00 m/sec

7783. 577 m/sec

6563365.0.0. mmm 1

O. _sec 1

O. m/sec l

7783.577 m/sec )

-9.256 m/sec _

O. m/sec 2

O. m/sec 2

DESCRIPTION

Time from time base 3 to initiate IGM guidance

Time to go for first IGM stage

Time to go for second IGM stage

Average value of m/m at initiation of second IGM

stage

Average exhaust velocity (go x Isp) for ist IGM

stage phase of flight

Average exhaust velocity (go x Isp) for 2nd IGM

stage phase of flight

Guidance Cutoff Signal (GCS) criteria. Terminal

velocity for IGM equations

Desired terminal position vector components inIGM coordinate system

Desired cutoff velocity components in IGM coordi-

nate system

Terminal gravitation vector components in IGMcoordinate system

-127-

"4

Table 3B(Cont 'd)

AS-206 S-IVB RESTART ALTERNATE MISSION L/V OPERATIONAL FLIGHT TRAJECTORYIGM PRESETTINGS

LVDC

SYMBCL

E

TRI

TR2

TR3

T2

ATN@_

INITIAL

VALUE UNITS

15. sec

3 • sec

1.8 N/D

Oe

Oe

200. sec

O. sec

R-ASTR sec

I. N/D

- .&26665Ol

+ .A951A778

+ .903o5328

-.A182953&

+.998381&3

-.56717968-.9OAAOO02

-.27976999

- .&2576733

N/A

Oe

API

AP2

AP3AP_AP5AP6

APTAP8

AP9

FLAG

E+OO TM

E-OI

E+00

E-02

E+00

E-OI

E+00

E-OI

E+OO,

sec

N/D

DESCRIPTIONS

Value of T3i to initiate IGM _V guidance

Value of T3i to freeze IGM (_)

Mission dependent constant multiplier for

terminal range angle equation

Mission dependent constants for N3 and

N& equations

Time to initiate thrust misalignmentcorrection

Terminal steering time argument

Nominal computation cycle length

ICM staging flag (Burn switch)

Transformation matrix from navigation

coordinate system to the (XA, Y&, Z_)

coordinate systemAz = 72.

@L = 28.531856

@N = I19.05&8

i = 31.61&3

Time from time base 3 to sample F/M

for IGM staging (Approximately 70 sec.

prior to nominal IGM staging)

Number of F/M decreases required for

IGM staging criteria

-128-

Table 3B(Cont 'd)

AS-206 S-IVB RESTAKT ALTERNATE MISSION L/V OPERATIONAL FLIGHT TRAJECTORYIGM PRESETTINGS

LVDC

SYMBOL

ACC

i0

AO

A1

PCO

T I0

CO

M02

M1

M3

ARTAU3

M03

M1

F1

F2

INITIAL

VALUE

N/A

NIA

N/A

N/A

N/A

N/A

N/A

N/A

N/A

N/A

1.O

120039.A

229'708.

20A6o&.

2850.81

UNITS

m/sec 2

sec

sec

N/D

sec

sec

sec

kg

kg/sec

kg/sec

N/O

kg

Ibs •

lbs.

k_/sec

DESCRIPTION

F/M comparison tolerance for IGM

staging

Constants for updating second stage

time-to-go for perturbed EMR shift time

Backup time for IGM staging

Constants for artificial T3 mode

Artificial T3 mode flag

Mass at J-2 start command minus mass to

be Jettisoned

Mass at first motion

S-IB average sea level longitudinal thrust,from first motion to IECO

S-IVB average first burn thrust, from 90%thrust to TI

S-IVB average second burn thrust fromTI to cutoff

Average S-IB flow rate, from first motionto IEC0

-129-

APPENDIX C : "TRAJECTORY LISTINGS, ENGLISH UNITS"

-130-

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L. L. McNair

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R-AERO-P

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(180 and 1 reproducible)

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