1 / 14

Lunar Descent Trajectory

Lunar Descent Trajectory. February 5 th , 2009. Descent Trajectory. Goal Determine trajectory, attitude, burn time, range & altitude EOM Derivation Assumptions Moon/spacecraft system, spherical & does not rotate, point masses 2-D problem

tal
Download Presentation

Lunar Descent Trajectory

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Lunar Descent Trajectory February 5th, 2009 [John Aitchison] [Mission Ops]

  2. Descent Trajectory [John Aitchison] [Mission Ops] • Goal • Determine trajectory, attitude, burn time, range & altitude • EOM Derivation Assumptions • Moon/spacecraft system, spherical & does not rotate, point masses • 2-D problem • T/m varies only with changing propellant mass (no throttling)

  3. Useful Numbers [John Aitchison] [Mission Ops] • Variability with: • Vehicle Mass • Thrust Capability • Lunar Parking Orbit

  4. Code (pg. 1) [John Aitchison] [Mission Ops]

  5. Code (pg. 2) [John Aitchison] [Mission Ops]

  6. Code (pg. 3) [John Aitchison] [Mission Ops]

  7. Code (pg. 4) [John Aitchison] [Mission Ops]

  8. Coordinate System [John Aitchison] [Mission Ops]

  9. Coordinate System Definitions [John Aitchison] [Mission Ops]

  10. Assumptions [John Aitchison] [Mission Ops]

  11. Calculations (pg. 1) [John Aitchison] [Mission Ops]

  12. Calculations (pg. 2) [John Aitchison] [Mission Ops]

  13. Calculations (pg. 3) [John Aitchison] [Mission Ops]

  14. Calculations (pg. 4) [John Aitchison] [Mission Ops]

More Related