Post on 11-Mar-2021
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