AAE450 Senior Spacecraft Design

Ryan ScottWeek 1: January 18th, 2007

Power Group LeaderSolar Panels / Transfer Vehicle / Capsule

AAE450 Senior Spacecraft Design

Possible Power Sources

• Nuclear– High power output for

extended periods

• Chemical– Available through

production

• Batteries– Power on demand

• Solar– Proven space

readiness

Batteries(Mike)

Solar(Ryan)

Nuclear(Courtney)

Chemical(Steve)

PowerNeed

AAE450 Senior Spacecraft Design

Conclusions (Solar Power Only)

• Transfer Vehicle:– 6.6 metric tons for Power Structure– 1778.8 m^2

• Capsule:– 0.9 metric tons for Power Structure– 241.5 m^2

AAE450 Senior Spacecraft Design

Mass and Volume

• Transfer Vehicle– m = (# of crew * mission duration * pressurized

volume)^0.346 = 44,201.7 kg, (24,000 kg Dr. Landau)– 15 m^3 (constraint), 3 years– 15% rule of thumb = 6,630.3 kg

• Capsule:– m = (# of crew * mission duration * pressurized

volume)^0.346 = 5,536.8 kg , (6,000 kg Dr. Landau)– Based volume on Lunar mission, 5 m^3, 8 days– 15% rule of thumb = 900 kg

AAE450 Senior Spacecraft Design

GaInP dual-junction

• Transfer Vehicle

- 6630.3 kg * 55% / 2.05 kg/m^2 = 1778.8 m^2

• Capsule

- 900 kg * 55% / 2.05 kg/m^2 = 241.5 m^2

• Effected slightly by radiation

• High Efficiency

• High Voltage per cell (2.1 volts)

AAE450 Senior Spacecraft Design

Resourses

• Dr. Damon F. Landau.  “Strategies for the Substained Human Exploration of Mars”  Thesis Submitted to the Faculty of Purdue University, Dec. 2006.

• Wiley J. Larson and Linda K. Pranke.  “Human Spaceflight”  McGraw-Hill Higher Education, 2006.