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Asteroid Deflection Demonstration

Asteroid Deflection Demonstration. October 1, 2013. James Munger. Asteroid Initiative Idea Synthesis Workshop. Approved for public release. NGAS Clearance case #13-1910. NG Systems Support Key Elements of NASA’s Asteroid Initiative. ASTEROID INITIATIVE. CAPABILITIES.

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Asteroid Deflection Demonstration

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  1. Asteroid Deflection Demonstration October 1, 2013 James Munger Asteroid Initiative Idea Synthesis Workshop Approved for public release. NGAS Clearance case #13-1910.

  2. NG Systems Support Key Elements of NASA’s Asteroid Initiative ASTEROID INITIATIVE CAPABILITIES Integrated Sensing Systems Asteroid Deflection Vehicle Asteroid Capture System Long Range Imager LADAR Ground Penetrating Radar Impactor Advanced CubeSat • See presentation by Howard Eller Tuesday Afternoon Presented by Steve Warwick TODAY Ready for launch in 2017

  3. Asteroid Deflection Mission Overview Ranging, Orbit & Spin Determination Surface & Structural Characterization Proximity Ops Deflection Ops Long-range Imager Ground Penetrating Radar LADAR Advanced CubeSat Flybys • Assumed Mission • Requirements: • Asteroid mass: ~1M t • Delta v: < 25 cm/s • Min time needed: ~ 12 yrs • Deflection Options Gravity Tractoring Direct SEP Thrusting Albedo Modification Asteroid 2013 ET w/ MLI Image credit: NASA / JPL / Caltech 100km 10km 1km 100m 0m High heritage space vehicle enables multiple deflection options

  4. Asteroid Deflection Approaches A single mission can execute multiple deflection approaches

  5. NG Asteroid Deflection Vehicle Overview Stowed Top View AsteroidEngagement/ Guide Cone • NG’s recommended Asteroid Deflection Vehicle is one of a flight proven Eagle-3 spacecraft currently in production NGC EAGLE 3 Spacecraft 50 kWAstroArray • >1000 kg of bi-prop for 6-DOF proxy ops • Very high structuralstrength & ruggedness • 4 M600 single gimbal CMGsmountedin bi-planar configuration 6-DOF Thrusters Telescoping Mast AstroMesh Reflector RPO Antenna Communication Antenna Xenon Propulsion Module BHT-20K Hall Thruster(3,000 s ISP) Xenon Tank (12,000 kg) Deployed View Stowed BottomView High heritage design fully supports deflection mission requirements

  6. AstroArrays Leverage NG’s AstroMeshReflector Design and Heritage AstroArrays’ Deployment Sequence is Identical to AstroMesh Reflectors Sequence AstroArrays based on highly successful NG AstroMeshreflectors, which have a 100% on-orbit success rate Thuraya/GEM: 1.6 GHz AstroMesh Deployment Video (also available on NGAS website) Design heritage assures AstroArray’s successful deployment & reliability

  7. 50 kW of Power is Generated Using the AstroArrays to Fully Operate Four Hall Thrusters • 158 W/kg of power-to-mass efficiency achieved by using the AstroMesh-based design • Simple rhombus shaped cell design maximizes panel mass efficiency while retaining low cost of production • 11 x 12 cell layout from standard 4” wafer • Rhombus panels with 80o acute angles Highly efficient AstroArrays provide ample power to Hall thrusters

  8. Summary • Northrop Grumman’s recommended asteroid deflection mission demonstrates a full set of asteroid deflection approaches • Gravity tractoring • Direct SEP thrusting • Albedo modification • Our deflection mission is enabled by Solar Electric Propulsion and flight proven, high heritage spacecraft elements in conjunction with our integrated sensor suite • SEP is fully supported by NG’s AstroArray design, which generates a minimum of 50 kW of electrical power • AstroArray is based AstroMesh concept, which has 100% on-orbit success rate Northrop Grumman’s ARV concepts fully support NASA’s ARM objectives, and we look forward to future collaboration

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