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

2. AAE450 Spring 2009 Communication Equipment on Lander EquipmentModelManufacturerMass (kg) Power Usage (W) Price (2009 $) Lander-Earth Antenna (2) Patch AntennaSSTL0.16--40,000 Lander-Earth Receiver RX-200SSpaceQuest0.21.530,000 Lander-Earth Transmitter TX-2400SpaceQuest0.23424,000 Lander-Rover Antenna ANT-100SpaceQuest0.1--500 Lander-Rover Transceiver TR-400SpaceQuest0.21620,000 Computer BoardRAD6000BAE0.8513200,000 Video CameraHF10Canon0.383.91,000 Antenna Pivot (2)-- 0.382.13168 Totals2.4860.53315,668 [Trent Muller] [COM] 100 gram Payload

3. AAE450 Spring 2009 10 kg Payload EquipmentModelManufacturerMass (kg) Power Usage (W) Price (2009 $) Lander-Earth Antenna (2) Patch AntennaSSTL0.16--40,000 Lander-Earth Receiver RX-200SSpaceQuest0.21.530,000 Lander-Earth Transmitter TX-2400SpaceQuest0.23424,000 Computer BoardRAD6000BAE0.8513200,000 Video CameraHF10Canon0.383.91,000 Antenna Pivot (2)-- 0.382.13168 Totals2.1754.53295,167 [Trent Muller] [COM]

4. AAE450 Spring 2009 Ground Stations Ground StationLatitude ( o )Longitude ( o ) Dish Size (m) 1Mt. Pleasant Radio Observatory. Hobart, Tasmania, Australia42.81 S147.44 E26 2 Ventspils International Radio Astronomy Centre (VIRAC). Irbene, Latvia 57.55 N21.85 E32 3Pisgah Astronomical Research Institute (PARI). Rosman, North Carolina 35.20 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.

5. 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) h17662.33 h23977.22 h38704.07 [Trent Muller] [COM]

6. 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) Hobart18031.14 km Irbene79232.09 km Rosman11569.17 km

7. 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 163.49 kg  Shows three landing cases 1)10g 2)15g 3)20g [Trenten Muller] [COM]