Commercial Confidential 1 LIM Yoram Yaniv, October 2010 LIM Yoram Yaniv, October 2010.

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Presentation transcript:

Commercial Confidential 1 LIM Yoram Yaniv, October 2010 LIM Yoram Yaniv, October 2010

Commercial Confidential 2 VENµS Vs. Galex (1) VENµSGalex IMPS by IAI/MBT Space (Based on TecSar satellite design) LEOStar-2 by Orbital (based on Orbview4 satellite design) Original Bus 4.5 years2.5 yearsMission Duration 720km, Sun Syn.690km, inclination 29ºOrbit 245kg (inc. Tech payload ~25kg) 280kgDry mass 25cm, f/7 (l=1.75m)50cm, f/6Telescope size

Commercial Confidential 3 VENµS Vs. Galex (2) VENµSGalex 310Mbits/sec25 Mbits/secX Band 15 Kbits/sec2 Mbits/secS Band Solar Panels 850 watts, Battery 30 Ah Solar Panels 3 m², Battery 3 axis stabilized, 2 Gyros, 4 reaction wheels, magnetic torques bars, sun sensors, Star Trackers Attitude Control 240 Gbits?On Board Recorder

Commercial Confidential 4 Dual launch Low operation Use existing design and units – adapt the mission requirements to existing design and units Additional missions to exploit bus capabilities – cost reduction per specific mission LIM – Cost Reduction (1)

Commercial Confidential 5 On board computer based on includes ~10Gbit (no On Board Recorder) Communication Existing systems: Single ground station (S + X) TDRSS BGAN (including GPS?) No propulsion system No Star Trackers (Magnetometers, Sun sensors, Gyro) LIM – Cost Reduction (2)

Commercial Confidential 6 LIM System

Commercial Confidential 7 06:00 orbit (sun is perpendicular to the orbit plane) No eclipse, constant power supply, small battery Size of solar panel depend on imaging cover (recommended no more than hemisphere) Imaging to the opposite direction of the sun Routine thermal behavior Scanning around cone (gyro) or “Jump” from one image to the next image Poor pointing accuracy for “pre” (0.5º), good pointing accuracy (~0.01º?) for “post” (on the ground from image) Orbit

Commercial Confidential 8 IR Detector