Ares First Stage Development… Igniting the Next Generation of Launch Vehicles Innovation … Delivered. Approved for Public Release Presented by: Fred Brasfield Ares I First Stage Program Manager Wernher von Braun Memorial Symposium October 21-22, 2008, Von Braun Center, Huntsville, Alabama

Ares I First Stage Conceptual Design Performance Drivers 56,200-lbm payload to orbit 800-psf maximum dynamic pressure 3.8-g maximum acceleration Maximize use of “heritage” hardware from Space Shuttle Major Subsystems Include… Five-segment reusable solid rocket motor (RSRMV) derived from heritage Space Shuttle four-segment RSRM Forward structures assembly Separation and deceleration system Avionics and electrical system Ordnance and range safety systems Aft skirt/thrust vector control system Approved for Public Release

Performance Drivers

56,200-lbm payload to orbit

800-psf maximum dynamic pressure

3.8-g maximum acceleration

Maximize use of “heritage” hardware from Space Shuttle

Major Subsystems Include…

Five-segment reusable solid rocket motor (RSRMV) derived from heritage Space Shuttle four-segment RSRM

Forward structures assembly

Separation and deceleration system

Avionics and electrical system

Ordnance and range safety systems

Aft skirt/thrust vector control system

Overview/Changes From Space Shuttle Booster New Structures Subsystems Frustum Aero Shell Forward Skirt Extension Forward Skirt Modified Recovery Subsystems Altitude-Sensing Hardware, Main Chutes, Reefing Line Cutters, Pyro Release Linear Shaped Charge, and Pyro Thrusters Pilot and Drogue Chutes Pyro Separation Release Subsystem Upper Stage Release During Ascent 1 st Stage Deceleration at Release Frustum Ejection From 1 st Stage at Apogee Existing Range Safety Subsystem Ground Power/ Control Cables, T-0 Umbilical-up Systems Tunnel Existing Aft Skirt and Thrust Vector Control RSRMV Electrical and Instrumentation Subsystem New or Modified Avionics for Thrust Vector Control, System Control, Range Safety Destruct, Power Distribution, Batteries, Instrumentation, Video, Pyro Initiation, Recovery System and Nozzle Severance Approved for Public Release

New Structures Subsystems

Frustum

Aero Shell

Forward Skirt Extension

Forward Skirt

Pyro Separation Release Subsystem

Upper Stage Release During Ascent

1 st Stage Deceleration at Release

Frustum Ejection From 1 st Stage at Apogee

Existing Range Safety Subsystem

RSRMV Design Change Summary The RSRMV design is based on the Space Shuttle RSRM Modifications to the motor were made to: Improve performance (thrust) Eliminate hazardous materials Replace obsolete materials Nozzle With Larger Throat and Extended Aft Exit Cone 12 fins in forward segment to improve performance Burn rate lowered to meet Ares I requirements Inhibitor Modified height and thickness Insulation and liner formulations modified to eliminate chrysotile fibers Lay-up optimized to provide additional thermal protection Added Segment Propellant Chamfers on Aft and Center Segments Approved for Public Release

The RSRMV design is based on the Space Shuttle RSRM

Modifications to the motor were made to:

Improve performance (thrust)

Eliminate hazardous materials

Replace obsolete materials

12 fins in forward segment to improve performance

Burn rate lowered to meet Ares I requirements

Inhibitor

Modified height and thickness

Insulation and liner formulations modified to eliminate chrysotile fibers

Lay-up optimized to provide additional thermal protection

Ares I RSRMV Propellant Casting Video of Ares Fin Being Lowered into Casting Pit Approved for Public Release

Video of Ares Fin Being Lowered into Casting Pit

Forward Structures Assembly Booster Tumble Motors (BTM) Recovery Separation Ring Forward Skirt Frustum Aeroshell Forward Skirt Extension Avionics Structure Main Parachute Support Structure (MPSS) Approved for Public Release

Separation and Deceleration System Aeroshell Pilot and Drogue Parachutes MPSS Top Plate Main Parachutes Recovery Separation Ring Altitude Switch Assembly Outer Rub Ring MPSS Approved for Public Release

Pyrotechnic Events 1 2 3 8 7 4 6 9 5 Approved for Public Release 1. First Stage Motor Ignition 6. Nozzle Severance 2. First Stage/Upper Stage Separation Initiation 7. Aeroshell Jettison 3. BDM Initiation 8. Forward Skirt Release 4. BTM Initiation 9. Parachute Pyrotechnics 5. Frustum Release

Ares I-X Forward Skirt Severance Testing High-Speed Video of Forward Skirt Severance Approved for Public Release Note: Click in black border to view video

Upcoming Milestones Ares I-X Forward skirt extension separation test Frustum separation test Hardware deliveries to Kennedy Space Center Ares I-X test flight Ares I Casting of Demonstration Motor No. 1 (DM-1): first live RSRMV 1 st stage motor DM-1 static test Continued design maturity progression towards Critical Design Review Approved for Public Release

Ares I-X

Forward skirt extension separation test

Frustum separation test

Hardware deliveries to Kennedy Space Center

Ares I-X test flight

Ares I

Casting of Demonstration Motor No. 1 (DM-1): first live RSRMV 1 st stage motor

DM-1 static test

Continued design maturity progression towards Critical Design Review

Ares I First Stage Development on Target Design, development, and hardware manufacturing progressing to plan Upcoming flight tests provide risk mitigation and ensure mission success Ares I and Ares V will ensure America’s continued leadership in space, providing the path to exploration Approved for Public Release

Design, development, and hardware manufacturing progressing to plan

Upcoming flight tests provide risk mitigation and ensure mission success

Ares I and Ares V will ensure America’s continued leadership in space, providing the path to exploration