1. Kevin Dahya Critical Design Review 3/6/01
Structures-ERV
Kevin Dahya
Critical Design Review
3/6/01

2. Launch off Earth ~ 85.8 Tonnes Landing on Mars ~ 55.2 Tonnes
KEVIN DAHYA Weights
Launch off Earth ~ 85.8 Tonnes
Landing on Mars ~ 55.2 Tonnes
Launch off Mars ~ 10 Tonnes
Return to Earth ~ 5 Tonnes

3. KEVIN DAHYA Shape

4. KEVIN DAHYA Inside Layout

5. KEVIN DAHYA Dimensions
Sizing Breakdown
Crew Quarters ~300m3
Propulsion/
In-Situ Plant /
Power Plant ~650m3
Rover Garage ~200m3

6. KEVIN DAHYA CTV

7. Lifting Body for better L/D Used for entry into Earth atmosphere
KEVIN DAHYA CTV
Lifting Body for better L/D
Used for entry into Earth atmosphere
Space for Crew and necessities
Can be used for 0 abort on Mars

8. KEVIN DAHYA CTV - Dimensions

9. KEVIN DAHYA Bending Loads (Aerobraking)
Wrote Matlab Code
Calculated for 6g loading
Bending Analysis by Sections
Gives Shear and Moments
Assumes 3 point bending
Found Max Bending Stress
Margin of Safety > 0 MS = 0.5

10. KEVIN DAHYA Things to do
Layout of ERV (Crew Living Area)
Landing Loads and Landing Leg Design
Propulsion Layout
Weights !!!
Build