Liberty™ Launch Vehicle

Report
Liberty™ Launch
Services
Presented to:
AIAA Space Transportation TC
May 21, 2012
0
Liberty™ Launch Service
•
•
•
•
The Launch Vehicle (LV) comprises an
ATK-provided 1st stage and an EADS
Astrium 2nd stage.
The Space Vehicle (SV) for crew
transportation includes the GRC
Service Module (SM), ATK/LM
composite Crew Module (CM) and ATK
Max Launch Abort System (MLAS).
For payload delivery missions, the
Space Vehicle includes the SM,
payload and associated fairing.
Launch
Vehicle
Space Vehicle
CONOPS
Ground Ops
ATK MLAS
EADS
Astrium
2nd Stage
Mission Prep
Payload
Crew Training
ATK
1st Stage
ATK/LM
Composite
Crew Module
Flight Ops
Ground processing, mission preparation
and flight operations leverage existing
JSC and KSC capabilities
GRC/LM
Service
Module
Total Vehicle Mission Integration
1
Liberty™ Launch Vehicle
Provides lift for multiple
Crew vehicles and launch
abort systems
LOX Tank
Ariane 5 core as
Liberty upper stage
LH
Tank
2
Vulcain 2
Engine
215 consecutive
successful boosters
launched
5-segment RSRM
as
Liberty
First Stage
2
48 consecutive
successful flights
Space Shuttle
Liberty
Ariane 5
Height: 184.2 ft
Gross Liftoff Mass: 4.5M lb
Height: 300.0 ft
Gross Liftoff Mass: 2.1M lb
LEO Payload 44,500 lbm
Height: 168.5 ft
Gross Liftoff Mass: 1.7M lb
Heritage Systems
Ariane 5
Crew, Cargo, and Satellite Customers
All Commercial
Crew Capsules
Commercial Cargo
Satellites
OR
Third Stage
Space
Shuttle KSC
Launch
Ares I-X
KSC
Launch
Launch Abort
System
48 consecutive
successful flights
RSRMV
5-segment
Booster
4 successful
static tests
Ariane 5 core EPC designed for
human-rated Hermes program
Liberty Launch Vehicle
l
l
220 consecutive
successful booster
flights
3
Successful flight
demonstration
KSC Launch Complex
Reliable two-stage vehicle
with capability to lift all
commercial crew capsules or
lifting bodies to ISS
Integration of flight-proven,
human-rated propulsion systems:
the cryogenic Ariane 5 core stage
and 5-segment booster
GLEX-001V1
Integrated Launch Vehicle
Architecture
4
Liberty Progress/Status
•
Team has been formed and is working
•
MLAS completed successful pad abort test
•
Composite crew module fabricated and tested
•
Crew capsule systems in development
•
2nd stage systems successfully flown 48 consecutive
times
•
Four successful tests of Five Segment Booster
• Evolved from 221 successful booster flights
•
SAFE hardware being integrated in SIL
Space Vehicle
MLAS
• Developed by NASA and industry
• Solid propulsion main engines and
jettison motors
• MLAS completed successful pad abort
test
CM/SM (Spacecraft)
• Capability for 7 crew to ISS
• GN&C evolved from NASA-developed
elements
• SM provides cargo capability
• Composite CM fabricated and tested
Launch Vehicle
Second Stage
• LH2/LO 2 cryogenic fuel stage
• Well-understood Vulcain 2 engine
certification plan for air start
• Second Stage evolved from Ariane
EPC with 47 successful flights
First Stage
• 5-segment solid motor
• Liberty aft skirt design
• Electro-hydraulic actuator thrust vector
control
• First Stage completed 4 successful
static tests
• First Stage evolved from Shuttle with
220 successful flights and Ares I-X
Integrated Systems
Situational Awareness and Fault
Evaluation (SAFE)
• Complete SV/LV monitoring
• Abort initiation upon detection of
specific conditions
Integrated Avionics
• GN&C evolved from NASA-developed
elements
• Flight computer resides in CM
5
GLEX-004V1
Ground System
Liberty Ground Ops Process Flow
Astrotech: MLAS Processing
Integration, Fuel load
Off critical path
Vehicle
Closeouts
Space Vehicle
Mate
3 days
3 days
VAB: Assembly and Testing
MLP/Crawler
2nd Stage
Stacking
LCC
5 days
O&C:
Crew/Service
Module Assembly
off critical path
Integrated Testing
2nd Stage
Transit by
Ship
IST #1: 4 days
IST #2: 3 days
1st Stage
Stacking
12 days
Recovery & Refurb
Return to O&C
1st Stage
Transit by Rail
RPSF: 1st Stage Aft
Assy
off critical path
Liberty Launch System utilizes existing people,
processes & infrastructure
6
LC39: Pad
Activities and
Launch
5 days
Mission Ops
Mission Operations
TDRSS – NASA
Space Network
De-orbit burn
and SM
separation
2nd Stage
Separation
MLAS
Separation
Rendezvous/
Prox Ops
ISS Docking
CM entry
Parachute
deploy and
water landing
1st Stage
Separation
Ship
Recovery
Crew Training (start ~T minus 3-6 months)
Mission Planning, Range Coordination (start ~T minus 6-18 months)
Mission Duration (3 – 210 days)
Launch (T-0)
Liberty’s Mission Operations leverages existing systems and proven
operations to further ensure mission success
7
Liberty System Dynamic Response
•
•
LH2 tank aft of LOX tank
•
Stiffened structure for Liberty upper stage
loads
As a result, Liberty thrust oscillation concerns are
managed with no mitigation required.
0.45
0.45
Liberty
Modes
Liberty AxialAxial
Ares I Axial Modes
Modes
Ares I Axial
Modes
100100
0.4
0.4
0.35
0.35
0.3
0.3
0.25
0.25
Time (s)
This is accomplished through a controlled flightvehicle coupled-system design that ensures the
vehicle is detuned from booster pressure
oscillations.
Time (sec)
•
The Liberty design reduces thrust oscillation
effects at the spacecraft interface to acceptable
levels.
First
Mode
80 80
0.2
0.2
0.15
0.15
Second
Mode
0.1
0.1
0.05
0.05
60 60
5
5
20
15
10
10Frequency (Hz) 15
Frequency (Hz)
0
20
6
Normalized Response
•
DM-2
Contour Plot (psi)
DM-2 Contour Plot (psi)
120120
Thrust Oscillation Mitigation
Ares I
Liberty
4
2
0
-2
-4
DM-2 Thrust Oscillation Response
-6
40
80
90
Time
Liberty Key Enabling Factors
l
8
50
60
70
100
110
120
Controlled structural dynamics – 1/6th that of Ares I
l
Forcing function family flight data validation reduces
load to less than half of original
l
High fidelity coupled fluid-structural analyses have
shown responses less than half of original
Q&A-010 V9
Liberty™ Mission Success
Trajectory
A
B
200
Ascent LOC
1/1400
Mission LOC
C
6.0
1/1289
*CCT-REQ-1130 Requirements
1 – Mission LOC (1/270)
2 – Ascent/Entry LOC (1/500)
1/1200
5.0
150
1/1000
3.0
2.0
SEP.
1/400
50
Abort Likelihood
Death is likely
Crew may survive
Crew likely to survive
NASA-STD3000
0
1/0
0
200
400
600
Time (sec)
800
*Consistent with value listed by ULA in Atlas User's Guide
9
1.0
1/200
*2
Liberty Margin
Ascent
Color
1/300
Less Risk
1/600
Liberty Margin
Orbit
Safer
100
*1
Entry
1/800
LOC (x in 1000)
Liberty
LOC
Altitude (km)
4.0
0.0
Liberty
Liberty
GLEX-007 V1
Commercial Approach
•
Liberty draws from heritage
commercial programs
• More than 20 years manufacturing,
integrating commercial rockets
- Athena, Taurus I, Antares, and
Pegasus launch vehicles
- Strap-on boosters for Delta II and
Delta IV
• Total of 267 successful launches and
47 ground tests
• Ariane 5 is awarded the lowest
insurance rates in industry
• Ariane 5 hosts 48 successful
consecutive successful missions
•
10
Re-evaluated heritage processes
towards a commercial approach
Summary
•
Liberty will provide the U.S. with
unprecedented crew/cargo/satellite
capabilities
•
Liberty benefits from extensive use of
lessons learned to minimize cost, technical,
and schedule risks
•
The Liberty System has a strong sustainable
business case
•
Liberty will enable a strong U.S. commercial
human space flight program for generations
to come
Liberty will provide the safe, reliable
access for commercial space
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