1. Lunar Descent Analysis
January 29, 2009
[Alex Whiteman] [Mission Ops]

2. LLO (Low Lunar Orbit) Analysis
Altitude of LLO important in minimizing ∆V and in ensuring stable orbit
∆V add-on 150 m/s for increase from 100 km to 500 km orbit
Optimize with LLO insertion ∆V to minimize total ∆V
[Name] [Group]

3. Airbag vs. Soft Landing Future Work
10-20 m/s ∆V savings in previous missions (Luna 9, Pathfinder, Spirit, Opportunity)
Could save more ∆V if final weight of Lander remains relatively small
Future Work
Begin Lunar descent trajectory optimization for minimum fuel expenditure
[Name] [Group]

4. ∆V Add-on Code
[Name] [Group]

5. Initial Basis for Descent Trajectory
Reference: “Apollo Lunar Descent and Ascent Trajectories”, NASA, 1970
[Name] [Group]