Nicole Bryan 1/31/2008 Avionics Sensor Selection and Link Budget Analysis AAE 450 Spring 2008.

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Nicole Bryan 1/31/2008 Avionics Sensor Selection and Link Budget Analysis AAE 450 Spring 2008

Sensors Sensor Unit Price Voltage Thermal Sensors ~ $10 ~ 5 V Pressure Sensors ~ $100 Varies(.5V-100mV) Flow Sensors ~ $215 ~ 110 V (AC) Force Sensors $55, $112 100LbF, 1000LbF ----- IMUs ~ $400 www.Digikey.com This is the start of developing a complete power budget for use in battery selection. AAE 450 Spring 2008 Avionics

Link Budget Analysis Frequency (MHz) Path Length (km) Power Input (W) Vehicle Antenna Beamwidth (deg) Vehicle Antenna Diameter (m) Ground Antenna Diameter (m) 15 4500 5 30 46.67 15.5 137 5.11 400 1.75 1428 0.49 18 2025 4000 35 0.30 2300 0.26 Assumptions: 8.5 x 107 bps data rate 2 dB implementation loss factor 1400 MHz to 1530 MHz Better signal range Feasible vehicle antenna sizes Low power requirements Reference: Justin Rhodes, Nicole Bryan Calculations method: Professor Filmer AAE 450 Spring 2008 Avionics

Possible Radio Frequencies Frequency Range (MHz) Regulated Use Notes 15.005 - 15.010 space research 18.068 - 18.168 amateur satellite 30.005 - 30.010 satellite ID and space research 137 - 137.025 space operation 272 - 273 Different International/US regulations 400.15 - 401 1427 - 1429 space operation, telemetry 1525-1530 space operation, mobile satellites 1755 - 1850 US regulations only 2025 - 2110 2200 - 2290 2290 - 2300 Reference: FCC - http://www.fcc.gov/oet/spectrum/ AAE 450 Spring 2008 Avionics

Reference: Danielle Yaple IMU IMU Weight G Force Size Bandwidth Q-Flex® 71 g 250 g 25.4 mm dia. X 24.6 mm high >300Hz Cross bows <.59 kg 1000g Non-operating 76.2 X 95.3 x 81.3 mm >25 Hz Ang. >75 Hz Accel. Si-Sensing Systems <18 g <1000g 18 X 29 X 29 mm 10 Hz Estimate Cost: $500-2000 Weight: 12 – 600g Reference: Danielle Yaple AAE 450 Spring 2008 Avionics

Reference: Danielle Yapl Batteries Battery Weight Wh/kg Cost Silver-Zinc (AgZn) 2.3-4.5 kg 110 ~$10,000 Lithium-Monofluoride (Li/CF) 130 -------- Lithium/Thionyl Chloride (Li/SoCl2) 185 Estimate Cost: < $10,000 Weight: 2.3-4.5 kg Reference: Danielle Yapl AAE 450 Spring 2008 Avionics