Copyright © 2009 United Launch Alliance, LLC. All Rights Reserved.AIAA_JPC080309

Upper Stage Evolution

Upper Stage Evolution

Mark Wilkins

Atlas Product Line VPUnited Launch Alliance

Mark Wilkins

Atlas Product Line VPUnited Launch Alliance

AIAA_JPC080309 | 1

EELV Sustainment Through 2030ULA’s Evolution Strategy

NextGenerationSystem

Development

Delta

Atlas

Fleet Evolution

CommonUpper StagePhase 2

CommonUpper StagePhase 2

Booster & GSEOptimizationPhase 3

Booster & GSEOptimizationPhase 3

FleetOptimizationPhase 1

FleetOptimizationPhase 1

ULAConsolidationPhase

ULAConsolidationPhase

Existing Intermediate Market

EELV Configurations

Future Heavy &

Growth Markets

(3) Upper Stages

(2) Avionics Systems

(2) GC3 Systems

(2) Upper Stage Engines

Common Subsystems

Existing Heavy Market

AIAA_JPC080309 | 2

Common Upper Stage EnablesRobust Industrial Base

Centaur

Delta IV Upper Stage

Ground Computer Systems

Launch Sites

Health Monitoring

Vehicle Instrumentation

Booster and Payload Interfaces

Ground/Airborne Software

Space-Based Range Advanced Telemetry

Common Airborne &

Ground Systems

System Integration Lab

Avionics Propulsion

Next Generation Engine

Payload Fairing

Metallic Tri-Sector

����Single PLF

Recommendation

5.1m Composite

5.4m Composite

PLF Tri-Sectors

RL10B-2-1RL10A-4-3

��������

•• Supplier Viability Through Supplier Viability Through Consolidations & RateConsolidations & Rate

•• Assured Access Through Assured Access Through Reliability, Resiliency & RateReliability, Resiliency & Rate

•• Industrial Base Health Industrial Base Health Through Sustained P3IThrough Sustained P3I

•• Reduced Obsolescence CostsReduced Obsolescence Costs

Some images courtesy of Pratt & Whitney Rocketdyne

AIAA_JPC080309 | 3

Upper Stage Engine Roadmap

RL10B-2Delta IV24 klb

RL10A-4-2Centaur

22 klb

RL10 Evolution• Common Atlas/Delta• USG Funded Enhancements

RL10A-4-3

RL10B-2-1 Next Gen

Engine(Increased Thrust)

RequirementDefinition•MR• Isp• Cost

Early Fielding with Existing Product LinesEarly Fielding with Existing Product Lines

61 klb Prop46 klb Prop 90 klb Prop

Some images courtesy of Pratt & Whitney Rocketdyne

AIAA_JPC080309 | 4

EELV Evolution Flexible Mission Architectures

Operational Phase 1 Phase 2

2 or 4

LRB’s

100+ t Class

Delta IVIncl RS-68A

New MLP

50t Class

40t Class

Atlas V

70t Class

UpperStage

Evolution

90t Class30t Class

20t Class

Phase 3

Low Risk Development

New Launch PadsEngine Development

Solids

Existing Launch Pads

5m Tanks

Dual RD 180s

First Step: Upper Stage Consolidation/EvolutionFirst Step: Upper Stage Consolidation/Evolution

AIAA_JPC080309 | 5

Mission Needs DriveULA’s Evolution Strategy

GPSGEO

MEO

LEO

Lunar Missions

Interplanetary C3>0

Nav

L1 Telescopes, Cargo, etc.

GEO

ISS

Dual-SatelliteAuxiliary Payloads

ResponsiveLaunch

AIAA_JPC080309 | 6

Advanced Common Evolved StageKey Elements

VehicleEquipment

EquipmentShelf

LO2Tank

LH2Tank

Monocoque Tank PayloadAdapter

VaporCooled Skirt

CommonBulkhead

Next GenerationEngine

Combine Best of Atlas & Delta CharacteristicsCombine Best of Atlas & Delta Characteristics

AIAA_JPC080309 | 7

Long Duration Innovation

Minimal Penetrations

Reduced LH2

Surface Area

InternalSump

Enhanced IB Insulation

MLI &Sun Shield

Guided byFlight

Experience

LH2 Tank Sized for

Substantial Boil-Off

Supporting Enhanced Mission RequirementsSupporting Enhanced Mission Requirements

• Monocoque Tank• Thermal Management• Mass Fraction >0.9

AIAA_JPC080309 | 8

Advanced Common Evolved StageExtensibility

Lunar Lander

In-Space

PropellantDepot

Key Elements& Innovations

Providing Efficient HighProviding Efficient High--Energy Propulsion CoreEnergy Propulsion Core

EELVs

AIAA_JPC080309 | 9

Ride Share OpportunitiesUpper Stage Extensibility

ESPA IPC

ABC

500+kg

80 kg

200 kg/ea

Aft Bulkhead Carrier

EELV Secondary P/L Adapter Integrated Payload Carrier

CAP+

100 kg

C-Adapter Platform+

P-Pod

10 kg

Poly PicoSat Orbital Deployer

Upper Stage Framework Upper Stage Framework Provides Innovations in Provides Innovations in Accommodating a Variety Accommodating a Variety of Rideshare & Science of Rideshare & Science MissionsMissions

Image courtesy of Cal-Poly

Image courtesy of STP Program Office

Image courtesy of STP Program Office

AIAA_JPC080309 | 10

Strong Systems Engineering Heritage of Strong Systems Engineering Heritage of Disciplined Evolution Provides Capability & Disciplined Evolution Provides Capability &

Reliability Necessary to Meet TomorrowReliability Necessary to Meet Tomorrow’’s Space Goalss Space Goals

Summary

� Atlas V & Delta IV Upper Stages Evolved from Over 100 Years & 1,300 Launches Combined to Achieve the Reliability & Agility Necessary to Serve Today’s Broad Launch Needs

� Active Flight Learning Produces System Knowledge & Reliability for Evolution & Innovation

� Common System Elements Establish a Framework for Supplier & Industrial Base Health

� Tank Design Innovations Currently Underway Establish a Framework for Future Missions (Growth & Extensibility)

� Future Mission Models Benefit from Early Fielding on Current Vehicles & Evolutionary Approaches