Propulsion Workshop InSpace Propulsion Technology Area 02 Alfred

Propulsion Workshop In-Space Propulsion Technology Area 02 Alfred Herzl © 2011 Lockheed Martin Corporation. All Rights Reserved. 23 March, 2011

Requirements: Propulsion Workshop • • Delta V Performance – Isp, volumes, steering, arc-following ACS Performance – Prop. control, coupled thrusters, min. I-bit, slew, GN&C I/F Packaging – LV I/F, primary structure attachment, staging, servicing, wet/dry mass – Switch circuits, power, telemetry, control, fault protection Environments – G, vibr. , shock, temp. – ESD, magnetics Reliability – Life, cycles, redundancy Non-propellant propulsion Schedule Cost 23 March, 2011 2

Progress Propulsion Workshop RCS Tanks – where is the propellant ET – temp control, packaging hydrogen Magellan – steering a solid, staging MGS – Dual mode, aerobraking Cassini – Big delta V, suppliers Stardust – fuel remaining, low cost XSS-11 – min. I-bit, low cost MRO – Keep it simple Phoenix – Pulsed thrusters Juno – environments, spinner Orion – many mission possibilities 23 March, 2011 3

Propellant Systems Propulsion Workshop Photos courtesy NASA 23 March, 2011 4

Propulsion Systems Propulsion Workshop Photos courtesy NASA Image Credit: NASA JPL, University of Arizona 23 March, 2011 5

Next Mission Needs Propulsion Workshop • • High pressure, low mass systems High autonomy with integrated health management Component vendor capabilities – Propellant/pressurant control Long-life cryogenics Fuels Refueling SEP Tools 23 March, 2011 6

Summary Propulsion Workshop 1. Missions must be identified to “pull” more mature technologies 2. Seek out adjacent commercial markets 3. Every mission has the responsibility to further technology developments 4. Test Programs are the key to confidence 5. NASA, Academia, and Industry ALL want to work on technology development 6. Prove technologies (qualify) by Mission PDR 23 March, 2011 7