Von Braun Symposium October 24, 2018

Julie Van Kleeck, Vice President, Advanced Space Programs Essential Elements

Space Launch System (SLS) Mars Ascent • RS-25 Engine Vehicle • RL10 Engine

Deep Space Transport - Crew Orion Deep Space • Reaction Control System - RCS Gateway Mars Lander • Jettison Motor - JM • Orbital Maneuvering Engine - OME

Crew Route Deep Space Gateway • Reaction Control System - RCS • Solar Electric Propulsion - SEP Orion SLS Crew Vehicle In-Space Propulsion • Solar Electric Propulsion - SEP • Nuclear Thermal Propulsion - NTP or Chemical Propulsion

Mars Lander & Surface SLS Cargo Systems Vehicle • Chemical Propulsion • Power Systems Deep Space Transport - Cargo Robotic Deep Space Exploration Mars Ascent Vehicle Cargo Route • Chemical Propulsion

Timeline 2020 2022 2022 2025 2028 2029 2030s EM-1: First Integrated EM-2: Human Mission Deep Space Gateway EM-3: Deep Space SEP Cargo Transfer Deep Space Human Mission Circling the Moon Transport – Crew to Mars Launch of SLS & Orion PPE (High-Power Gateway Habitat to Mars Begins 2 SEP Demo) Shakedown Cruise Images courtesy of NASA and Sierra Nevada Corporation (NTP/Chemical) Engines of Choice for NASA’s SLS

RS-25 engine RL10 engine

UNMATCHED RELIABILITY

3 Aerojet Rocketdyne SLS Propulsion An Evolutionary Path To Future Capabilities

Baseline Configuration Exploration Evolved Heavy Lift Configurations Upper Stage (EUS) Exploration Mission 1 (2020) Exploration Mission 3 & Beyond Exploration Mission 2 (2022) Engine Trades 4 RL10s

322 ft. 364 ft. 327 ft. 365 ft.

Interim Cryogenic Launch Abort System Propulsion Stage Orion Universal Cargo Fairing and Stage Adapter Exploration Exploration Interim Cryogenic Upper Stage Upper Stage (EUS) Propulsion Stage Launch Vehicle Interstage Interstage RL10 Stage Adapter Core Stage Core Stage Core Stage

Solid Solid Advanced Rocket Rocket Boosters Boosters Boosters

RS-25 Engines Core Stage SLS Block 1 SLS Block 1B Crew SLS Block 1B Cargo SLS Block 2 Cargo 4 RS-25s 70t 105t 105t 130t

4 RS-25 & RL10 Readiness

5 RS-25 Firing at Stennis Space Center

6 New RS-25 Production Engines Update

• Developing new expendable RS-25 engines that have the reliability of the SSME at a lower cost • Identified more than 35 components that are candidates for additive manufacturing • Simplifying design – eliminating over 700 welds and piece parts • Development, certification and production hardware all currently in work

• Validating smart manufacturing techniques • 8th successful tests of additive manufactured Pogo assembly • First HIP-bonded Main combustion chamber now in test (taking advantage of RS-68 and J-2X experience) • 5th simplified nozzle jacket in fabrication (was 35 pieces, now 4)

7 RL10: NASA’s SLS Upper-Stage Engine

8 Power is GO for Moon, Mars & Beyond!