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Power Systems for Lander

Power Systems for Lander. Adham Fakhry. Final Power Systems. Final Power Systems for Arbitrary. Backup Slide 1: Power Available to the Lander. Battery Design (1). Battery is designed for meet three power goals for 100 g Lander: Delivers 124 W for 250 seconds for operating the Lander engine

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Power Systems for Lander

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  1. Power Systems for Lander AdhamFakhry [Adham Fakhry] [Power]

  2. Final Power Systems [Adham Fakhry] [POW]

  3. Final Power Systems for Arbitrary [Adham Fakhry] [POW]

  4. Backup Slide 1: Power Available to the Lander [Adham Fakhry] [POW]

  5. Battery Design (1) [AdhamFakhry] [POW] • Battery is designed for meet three power goals for 100 g Lander: • Delivers 124 W for 250 seconds for operating the Lander engine • Delivers 30 W for 576 seconds of attitude • Delivers 60.4 W for 30 minutes for all communication gear

  6. Battery Design (2) [AdhamFakhry] [POW] • Battery is designed for meet three power goals for 10 kg Lander: • Delivers 150 W for 450 seconds for operating the Lander engine • Delivers 30 W for 900 seconds of attitude • Delivers 56.4 W for 30 minutes for all communication gear

  7. Battery Design (3) [AdhamFakhry] [POW] • Battery is designed for meet three power goals for Large Lander: • Delivers 275 W for 500 seconds for operating the Lander engine • Delivers 30 W for 900 seconds of attitude • Delivers 56.4 W for 30 minutes for all communication gear

  8. Solar Array sizing [AdhamFakhry] [POW] • Solar array Calculations: • Dimensions of Solar cells: • Area of Lander roof = π(1/2)2 = 0.785 m2 • Solar efficiency = 300 W/m2 • Potential max power = 235.6 W • Cost of Solar Cells: • Cost of cells per watt = 1000 $/W • Cost of Cells = 235,619.45 = $235,600 • Total cost = $235,600 + 4,400 (for additional costs) = $250,000

  9. Hydrazine Tanks [AdhamFakhry] [POW] • 100 g • 3.9 kg Hydrazine + 0.3 kg Tank = 4.2 kg • 0.2 m diameter tanks, V= 0.00133 m3 • 10 kg • 4.13 kg Hydrazine + 0.31 kg Tank = 4.41 kg • 0.21 m diameter tanks, V= 0.0015 m3 • Large Payload • 42.6 kg Hydrazine + 2.25 kg Tank = 44.85 kg • 0.43 m diameter tanks, V= 0.0133 m3

  10. Battery Specifications [Adham Fakhry] [Power] 3.6 V, 20 Ah Lithium Ion Cell Gives 72 W-hr only need 44 W-hr Energy Density = 140 W-hr/kg Dimensions = 0.142 m X 0.0534 m X 0.1502 m Cost $2000 per cell From Yardney - Lithion

  11. Heats of Reaction Calculations [Adham Fakhry] [Power] 10 W 14 days =10W∙14 days∙24 hrs/day.60 min/s.6 secs= 12096000 Joules Hrxn = -112093 J/mol = 3502916 J/Kg Mass of Hydrazine = 3.45 kg

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