AAE450 Spring 2009 Communications Ground Stations Communication Equipment Alternative Landing Method March 26, 2009 [Trent Muller] [COM]

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AAE450 Spring 2009 Communications Ground Stations Communication Equipment Alternative Landing Method March 26, 2009 [Trent Muller] [COM]

AAE450 Spring 2009 Communication Equipment on Lander EquipmentModelManufacturerMass (kg) Power Usage (W) Price (2009 $) Lander-Earth Antenna (2) Patch AntennaSSTL ,000 Lander-Earth Receiver RX-200SSpaceQuest ,000 Lander-Earth Transmitter TX-2400SpaceQuest ,000 Lander-Rover Antenna ANT-100SpaceQuest Lander-Rover Transceiver TR-400SpaceQuest ,000 Computer BoardRAD6000BAE ,000 Video CameraHF10Canon ,000 Antenna Pivot (2) Totals ,668 [Trent Muller] [COM] 100 gram Payload

AAE450 Spring kg Payload EquipmentModelManufacturerMass (kg) Power Usage (W) Price (2009 $) Lander-Earth Antenna (2) Patch AntennaSSTL ,000 Lander-Earth Receiver RX-200SSpaceQuest ,000 Lander-Earth Transmitter TX-2400SpaceQuest ,000 Computer BoardRAD6000BAE ,000 Video CameraHF10Canon ,000 Antenna Pivot (2) Totals ,167 [Trent Muller] [COM]

AAE450 Spring 2009 Ground Stations Ground StationLatitude ( o )Longitude ( o ) Dish Size (m) 1Mt. Pleasant Radio Observatory. Hobart, Tasmania, Australia42.81 S E26 2 Ventspils International Radio Astronomy Centre (VIRAC). Irbene, Latvia N21.85 E32 3Pisgah Astronomical Research Institute (PARI). Rosman, North Carolina N82.87 W26 [Trent Muller] [COM] Worst case altitude for coverage gap : 80,000 km from VIRAC Plan to use Universal Space Network from LEO to 80,000 km Universal Space network consists of 14 ground stations all around the world Estimated cost: $1 million (2009$) for one year of usage, one station at a time.

AAE450 Spring 2009 Backup Slides Top down view of Earth showing ground stations an coverage gaps 1.Mt. Pleasant 2.VIRAC 3.PARI AltitduesAltitude (km) h h h [Trent Muller] [COM]

AAE450 Spring 2009 [Trent Muller] [COM] Side view of Earth showing coverage of Mt. Pleasant Observatory’s worst case scenario. For southern hemisphere: Moon’s orbital inclination positive with northern hemisphere tilted towards the Moon ObservatoryAltitude (km) Hobart km Irbene km Rosman km

AAE450 Spring 2009 High Energy Tangent Landing  Represents the Lander landing with a significant horizontal velocity and sliding on Lunar surface without skipping, digging in, or creating a crater immediately upon impact.  Assumes constant deceleration based on initial impact.  Based on an old design iteration with a dry mass of kg  Shows three landing cases 1)10g 2)15g 3)20g [Trenten Muller] [COM]