TO - Defense Technical Information Center · CAMERON STATION ALEXANDRIA. ... were made from NE 8737 steel tubing, internallv grooved, heat ... Head Wt. Rd. Serial Koto?

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THIS PAGE IS UNCLASSIFIED

AD040375

unclassified

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Approved for public release; distribution isunlimited.

Controlling DoD Organization: Naval ProvingGround, Dahlgren, VA.

USNSWC Notice dtd 14 Aug 1975; USNSWC Noticedtd 14 Aug 1975

UNCLASSIFIED

AD 90;3 7S~

DEFENSE DOCUMENTATION CENTER FOR

SCIENTIFIC AND TECHNICAL INFORMATION

CAMERON STATION ALEXANDRIA. VIRGINIA

CLASSIFICATION CHANGED TO: ^y^c^c FROM: Xt AUTHORITY: USMSVSC Oof/cd, MAU<[ 7S

UNCLASSIFIED

U. 3., NAVAL PROVING GROUND DAHLGREN, VIRGINIA

REPORT NO. 918

WARHEADS FOR AIR TARGET GUIDED MISSILES;

TESTING OF

i|Qth Partial Report

AAP ROD-PRODUCING WARHEAD AND

ROCKET MOTOR; FRAGMENTATION OF

.A

FINAL Report

Copy Ho. ^•J-

Task Aaalgnmant HPa-Re3f-807-I-S2

ClaaaifIcatlon CONFIDENTIAL SECURITY INFORMATION

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t

! 1

NPG RBPCRT NO. 948

AAP Rod-Producing Warhead and Rocket Motor^ Fragmentation of

1. This test was conducted to determine the fragmentation characteristics if AAP rod-producing warheads. These warheads were made from NE 8737 steel tubing, internallv grooved, heat treated to Rockwell "C" 40-44, and Composition C-3 loaded.

2. The AAP warhead expelled rod-like fragments up to 8" in length evenly about the warhead circumference ao an average velocity of 4160 ft./sec*

S&CJHITY INFORMATION

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.__ NPG REPORT NO. 948

AAP Rod-Producing Warha&d end Rocket Motor, Fragmentation of

mm & gpCTTg Ifigfi

SYNOPSIS ........ ..... 1

TABLE OF CONTENTS * •••'«*••• 2

AUTHORITY. 3

REFERENCED . . - .3

BACKGROUND ....... 3

OBJECT OF TEST » 3

PERIOD OF TEST 4

REPRESENTATIVES PRESENT ....... 4

DESCRIPTION OF ITEM UNDER TEST 4

PROCEDURE, . • « « !>

RESULTS AND DISCUSSION . , . • . . 5

CONCLUSIONS , , 6

APPENDIX A - AAP WARHEAD DRYINGS, .... * FIGURES X-3 (incl)

APPENDIX B - FRAGMENT DISTRIBUTION DATA. . , TABLE I

APPENDIX C - FRAGilE'NT VELOCITY DATA TABLES II-III (Incl)

APPENDIX D - M^tS DISTRIBUTION DATA TABLE IV FIGURES 4-7 (Incl)

iJ>PENDIX E - DISTRIBUTION. 1-2 (Xnel)

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NOTICE: THIS DOCUMENT CONTAINS INFORMATION AFFECTING THE

NATIONAL DEFENSE OF THE UNITED STATES WITHIN THE MEANING

OF THE ESPIONAGE LAWS, TITLE 18, U.S.C., SECTIONS 793 and 794. j

THE TRANSMISSION OR THE REVELATION OF ITS CONTENTS IN

ANY MANNER TO AN UNAUTHORIZED PERSON IS PROHIBITED BY LAW.

K 3

CONFIDENTIAL K?G REPORT NO. 948

AAP Rod-Producing Warhead and Rocket Motor, Fragmentation of

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mwwvsm 1. AUTHORITY I

This test WAS authorized by reference (a) and conducted under Task Assignment NPG-Re3f~&>7-l-52, reference (b).

2. REFERENCESt

a. NOL Conf Itr NP/N0L/X1K270) WGiSWsmbw Ser 01569 of 6 September 195i

b. BUORD Conf ltr NP9 Re3f-EJHLiedb Ser 25777 of 18 September 1951

c. NPG Conf Report No. 858 of 13 October 1951 d. NPG Conf Report No. 854 of 1 September 1951

3. BACKGROUND:

a. Reference (b) authorized the Naval Ordnance Laboratory to work directly with th6 Naval Proving Ground in the development and testing of guided missile warheads.

bs Reference (d) reported the fragmentation characteristics of the notched ring AAP warhead. Reference (c) reported the fragment >nass distribution of two types of AAP rod-producing warheads. Type 4. Four additional AAP rod-producing warheads, were delivered to the Proving Ground for fragmentation tests.

4. OBJECT OF TESTl

This test was conducted to determine the fragmentation characteristics of AAP rod-producing warheads. These warheads were made from NE 8737 ateel tubing, internally grooved, heat treated to Rockwell "C" 40-44, and Composition C-3 loaded.

CONFIDENTIAL SECURITY INFORMATION

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CONFIDENTIAL NPO REPORT NO. 948


5. PERIOD OF TEST!

a* Date Project Letter b. Date Necessary Material Received c. Date Commenced Test d« Date Test Completed

6. REPRESENTATIVES PRESENTt

6 September 1951 2'/ September 1951 5 December 1951 7 December 1951

This test was witnessed by Messrs* S. Wolf and J. R. Burton representing the Naval Ordnance Laboratory.

PART C

7. DESCRIPTION OF ITEM UNDER TEST?

Four rounds of AAP rod-producing warheads were assembled with inert i-iJP rocket motors. Detailed assemblies are shown in Figures ls 2, and 3« The warheads were made from NE 8737 stee" tubing? inier<i&llv grooved to produce 24 rod-like fragments and heat treated to Rockwell "C" 40-44. The warheads were assembled with mock-up VT fuzes modified for static detonation and then loaded with Composition C-3 at the Proving Ground. The weights of the components were as followss

Head Wt. Rd. Serial Koto? Wt„ with Fuze Filler Total Wt.

1

No,

505-1

lfc*h lbs.

4.60

lbs.

38.85 17.10 60.55 2 tfAcr_o 38.75 17.10 4.61 60.46 3 505-3 38.80 17-32 4.46 60.58 4 505-4 "*8#8G 17.15 4.50 60.45

CONFIDENTIAL SECURIJY INFORMATION

D O

CONFIDENTIAL NPG REPORT NO. 9*8

AAF Rod-Producing Warhead and Rocket Motor, Fragmentation of

8, PROCEDURES

a. Round No* 1, Serial No. 505-1* was detonated in a sawdust filled chamber for mass distribution data, After the detonation, the sawdust was sifted and the fragments recovered by the use of sieves and a magnetic separator*

b. Rounds Nos. 2, 3, and 4, Serials Nos. 505-2, 505-3• and 505-4, were detonated'in a 30.6 foot radius velocity arena. The arena consisted of 15 foot high 1" thick steel panels in longitude sones 350°-55* and 125*-190°. A cane fiberboard pack 4* high 8« wide, and 41 thick wss placed with its center 5 feet off the ground, in the 90* longitudinal plane, and 30 «6 feet from the center of the arena for recovery of sample rod-like fragments. The velocity determinations were obtained by high speed photo- graphic technique. Angular fragment distribution and fragment lengths were recorded from impacts on the panels. All rounds were placed vertically with the warhead up on a wooden stand in the center of the arena and detonated statically.

9. RESULTS AND DISCUSSION!

a. Mass Distribution

Detailed mass distribution data of Round No. 1, Serial No. 505-1 are listed in Table IV and shown in Figure 4. The

j number and lengths of the rod-like fra*«*««ts are as follows! 1

Approx. Approx.

10 8" 6 4 i/2" 2 6" 27 2" - 4"

The motor fragmented satisfactorily, considering that it contained no propellant.


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CONFIDENTIAL NPG REPORT NO, 9*8

AAF Rod-Producing Warhead and Rocket Motor, Fragmentation of

i i

b. Fragment Space Distribution

One of the three warheads detonated for space distribution and velocity detonated low order. The warhead is shown in Figure 6* The other two detonated high order producing rod-like fragments. The fragments were distributed evenly, approximately 15° apart about the circumference of the warhead at approximately 93° of latitude measured from the forward end of the missile. Tho rocket motor is the forward end of this missile with the wsrhead the h&$e end. The rod-liko fragments had a tendency to remain about 6" to 8M in length with some breaking into two lengths. Detailed fragment length and angular distribution data are listed in Table I. Sample warhead and motor fragments recovered are shown in Figures 5 and 7.

c. Fragment Velocities

The rod-like fragment velocity from the warheads 505-2 and 505-3 averaged 4160 ft./sec. The motor fragments which hit in latitude zone 75°-78° averaged 2500 ft./sac. These fragments were from the roar section of the motor nearest the warhead. The maôr portion of the motor fragments were found within 400 foet of the arena center and their velocity is estimated to be 200=500 ft./see. Detailed fragment velocity data are listed in Tables II and III.

EaiT *

10. The AAP warhead expelled rod-like fragments up to 8" in length evenly about the warhead circumference at an average velocity of 4160 ft./sec.


c. 3 CONFIDENTIAL NPG REPORT NO. 9*6

AA? Rod-Producing Warhead and Socket Motor, Fragmentation of

The tests unon which this report is based were conducted byi V. PHILIPCKUKj Fragmentation Battery Officer,

Fragmentation Division, •Aerminal Ballistics Department

This report was prepared by? V. PKILIPCKUK, Fragmentation Battery Officer,

Fragmentation Division Terminal Ballistics Department

This report was reviewed fcyt R. H. LYDDANE, Director of He search

Terminal Ballistics Department W. B. ROBERTSON, Lieutenant Commander, USN,

Terrain?1 Ballistics Batteries Officer, Terminal Ballistics Department

R« T. RUBLE, Lieutenant- Commander, ESN, Terminal Ballistics Officer, Terminal Ballistics Department

C. C. BRAMBLE, Director of Research, Ordnence Group

APPROVED? LIVING T. DUKE Rear Admiral, USN Commander, Naval Proving Ground

C. T. MAURO Captain, USN Ordnance Officer By direction


54723

CONFIDENTILL NPG REPORT NO, 9^8

U. 6. NAVi-J. PROVING GROUND DiJlLGREN, VIRGIN!/*

Fortieth Partial Report

on

Warheads for Air Target Guided Missiles;

/ Testing of

Final Report

on

Ai^P Rod-Producing Warhead and

Rocket Motor; Fragmentation of

Project No,* NPG-Re3f-607-1-52 Cop/ No.* 11 No* of Pagest 7

CONFIDENTS CI'.CUR ITY INFCRMATI ON

Date , MAR Z 7 1952

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CONFIDENTIAL NPG REPORT NO. 948


TABLE I <mmmmmmmmmm*

ANGULAR DISTRIBUTION DATA AAP Rod-Producing Shrhead and Ecsfcst Uctcr

30.S Foot Radius Arena, 15* High Panel*

Rd. No. 2 Rd. He. 3 Ed. Ho. 4 Serial Ho. 505-2 Serial No. 506-3 Serial Ho. 505*4

Longitude Longitude Longitude Angle Fragment Angle Fragment Angle Fragment

(Degrees) Length (Inches) (D&oyees) Length (Inches) {Degrees) Length (inches)

2 16 19 34 51

132 132 148 164 180

8 1/4 S 1/4 3 s/4 7 8 3 4 4 * 3 * Sl/t •

This round detonated Low Order* See Figure 6.

6 25 39 56 92

13? 153 169 185

3 * 8 1/4 7 3/4 G 8 5 5 1/4 4 • 6

1

* .These fragment lengths were probably greater. They penetrated the 1* tMelr STS panels and the impact openings were recorded an the fragment lengths.

CONFIDENTIAL SECURITY INFORMATION APPENDIX 3

WHES J-'^L- Jfia-tei &**£X1 ' Hi" flidl'l'ffHPl i

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COBFXSUOTSAL KPG REPORT NO. 948

AAP Rod 'Producing Warhoed and Rocket Motor, Fragmentation of

35mm Fasrtax Camera Rd. 2 HOt 505-2 A4P 30,6 foot Radius Arena Total Weight 60*46 lbs.

LongHtufis ône

5 4 1

Frame in ^hic-fl >ccurred

350°-55*

350*-55°

22 23 24

Median

Average v «

Motor Hitsi

Longituce

350*-55° 125°-190•

1 1 38

350*-55a 2 i 39

3150 frames per sec. Cote?. C-3

Filler Weight 4.61 lbs.

No. Rod-like

5 4

No. Motor Fragments

2

3

438C 4190 4020

4380

4270

2540

24/0

CONFIDENTIAL S^CURIIY INFCRMmON APPENDIX C

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CONFIDENTIAL NPG REPORT NO. 9*8

i»AP Rod-Producing Warheads end Rocket Hot or, Fragmentation of

FRAGMENT VELOCITY OAT'

35mm Fest&x Camera Rd. 4 NO! AAP Warhead 505-4 30.6 foot Radius Arena Total Weight 60.45 lbs.

3X80 frames per sec, Coop. C-3

Filler height 4.50 lbs,

Longitude

350*-55« 125"-190*

Average

Frame in which Ko. Hod-like HSJL Jjit Occurred,

4 4 24 8 4050

40$0

CONFIDENTIAL SECURITY INFORMATION .11 i UiitlA 5."

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0 u **^ NPG REPORT NO. 948

AAP Rod-Producing Warheads and Rocket Motor, Fragmentation of

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Bureau of Ordnances

Ad3 Re2 Re3 Re3f

Chief or ordnance Department of the Army Attns ORDTX-AR

Navy Research Section Library of Congress Washington 259 D. C. (Via BUORD Re$)

Commanding General Aberdeen Proving Ground Aberdeen - KsrYi©i?x* Attns Technical Information Section

Development and Proof Services

Commander, Gpf-rational Development Force t)'» S* Atlantic Fleet, D. fi* Naval Base Norfolk 11, Virginia

Naval Ordnance Laboratory

Naval Ordnance Laboratory Attnj Explosives Division Attns Mr. H. W. Semon

Picatinny Arsenal, Dover, N. J. Attn; Technical Division

Reports Office WPL/JHO, Silver Spring,Maryland

JPL/JKU, Silver Spring, Md* Attn* Mr. H, S* Morton fVifc IN80RD, Silver Spring, Md*)

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SECURITY. INFORMATION APPENDIX E

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KPG 1 SPORT NO. 9*8

AiiP Rod-Producing Warheads and Rocket Motor, Frags ntation of

sureau of Ordnance TwchP^ctl Liaison Office Bell Telephone Laboratories Whippany, New Jersey

tJSNOTSj Inyokerfi, ChiflA T.Rka Calif

Inst, for Cooperative Research JEU/ Via (District Chief. Phila. Ord District

1500 Chestttu-; St*, Phila, 2, Pa, Attm Mr. Bernard R, C. Niles)

Director, Research end Development Division New Mexico Institate of Mining and Technology Socorro, N©* Mexico Vlas Development Contract Officer

3?£?i Wo»4*;<3 Institute of Minitig und Technology Socorro, New Mexico

Boeing Airplane Company Seattle Division Seattle, Washington

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UNCLASSIFIED

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TO - Defense Technical Information Center · CAMERON STATION ALEXANDRIA. ... were made from NE 8737 steel tubing, internallv grooved, heat ... Head Wt. Rd. Serial Koto?