1. AAE 450 – Human Factors Devin J. Cummings
Overview:
ERV Tether Sizing
Radiation Shielding
Mission Logo/Patch Ideas
Future Work

2. AAE 450 – Human Factors Devin J. Cummings
ERV Tether Length:
223m gives Earth gravity at 2.00rpm on way back
-- gives Mars gravity at 1.23rpm
Easily Meets all Gravity Gradient and
Coriolis Acceleration Concerns

3. AAE 450 – Human Factors Devin J. Cummings
Radiation Concerns
Galactic Cosmic Rays (GCR’s) – not major concern
Solar Cosmic Rays (SCR’s / Solar Flares) – proper shielding

4. AAE 450 – Human Factors Devin J. Cummings
SCR Defense
Use Storm Shelter surrounded by wash water
Interior Volume: 2.1m diameter, 2.5m height
(large enough for four astronauts to sit around small table)
Total Available Volume: 8m3
Necessary Water Thickness for Proper Protection: 25cm
(necessary volume of 7.27 m3)
This gives a total outer size of storm shelter of:
Diameter = 2.6m
Height = 3.14m

5. AAE 450 – Human Factors Devin J. Cummings
Why 25cm?
25cm meets
NCRP reqmts.
For Blood-Forming
Organ Protection X
* Plot from
Radiation Exposure Predictions
For Short-Duration Stay Mars
Missions,
Striepe, Nealy, Simonsen
Nasa Langley Research Center

6. AAE 450 – Human Factors Devin J. Cummings
Radiation Doses During Regular Solar Flares
Dose of
1 cSv or
less for
most flares X
* Plot from
Radiation Exposure Predictions
For Short-Duration Stay Mars
Missions,
Striepe, Nealy, Simonsen
Nasa Langley Research Center

7. AAE 450 – Human Factors Devin J. Cummings
Radiation Doses During Large Solar Flares
Dose of
25 cSv
for
largest
flare X
* Plot from
Radiation Exposure Predictions
For Short-Duration Stay Mars
Missions,
Striepe, Nealy, Simonsen
Nasa Langley Research Center

8. AAE 450 – Human Factors Devin J. Cummings
Possible Mission Logo/Patch Designs

9. AAE 450 – Human Factors Devin J. Cummings
Design #1:

10. AAE 450 – Human Factors Devin J. Cummings
Design #2:

11. AAE 450 – Human Factors Devin J. Cummings
Design #3:

12. AAE 450 – Human Factors Devin J. Cummings
Future Work:
HAB DESIGN!!!!!