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Team A Presentation One Dynamics and Control

Explore the intricacies of direct launch vs. arrival at Mars, including propellant use, complexity, and impact on spacecraft velocity. Learn about parking orbits, tether length, and G forces during the process.

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Team A Presentation One Dynamics and Control

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  1. Team A Presentation OneDynamics and Control Anne DeLion 16 January 2001

  2. Departure • Direct Launch • Less propellant use. • Simpler than launch to low Earth orbit (LEO) • Launch to LEO • Costs more propellant • More Complex

  3. Arrival at Mars • Direct Descent • Requires only a minimal change in velocity (DV) to impact Mars’ atmosphere. • Simple to implement • Spacecraft will hit the Martian atmosphere at a velocity of 6970 m/s. • Large G forces will occur.

  4. Arrival at Mars • Parking Orbit • Depending on the size and shape of the parking orbit, the required DV will be significant. • Allows time for astronauts to check the weather at the landing site and to check out equipment for descent.

  5. Tether Length and Rotation • F = .0011 w2 d [see Zubrin pp. 123] • w is the rotation rate in rev/min. • d is the distance from the system center of mass to the hab. • F = .38 G, or .38 Earth’s gravity.

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