Differences between revisions 8 and 9
 ⇤ ← Revision 8 as of 2017-12-01 18:12:40 → Size: 1504 Editor: KeithLofstrom Comment: ← Revision 9 as of 2017-12-01 18:13:26 → ⇥ Size: 1502 Editor: KeithLofstrom Comment: Deletions are marked like this. Additions are marked like this. Line 11: Line 11: .1 Humans evolved to run, hence may be optimized for > 1 gee 1 Humans evolved to run, hence may be optimized for > 1 gee Line 14: Line 14: .2 The human vestibular system can adapt to high RPMS 2 The human vestibular system can adapt to high RPMS Line 20: Line 20: . Test the Vernikos theory: do healthy humans do '''better''' in > 1 gee environments? . Learn about long term vestibular adaption, and the transition from rotation to non-rotation 1 Test the Vernikos theory: do healthy humans do '''better''' in > 1 gee environments? 2 Learn about long term vestibular adaption, and the transition from rotation to non-rotation Line 23: Line 23: . Select astronauts for vestibular tolerance for rotating habitats in microgravity . Make low BMI people into heros 3 Select astronauts for vestibular tolerance for rotating habitats in microgravity 4 Make low BMI people into heros

# Gee Plus

## The Experiment

A 9 meter radius, rotating long-duration space habitat simulation on Earth, simulating 1.4 gees at 10 RPM. 1.4 gees is the vector sum of 1 gee horizontal and 1 gee vertical. Experimental subjects with BMI < 20, having a "gravitational BMI" < 28 but the same "metabolic BMI".

## Postulates

• 1 Humans evolved to run, hence may be optimized for > 1 gee

• see work by Joan Vernikos, NASA Ames (retired)
• zero gee causes rapid "aging"
2 The human vestibular system can adapt to high RPMS
• Experiments with rotating rooms show 6 RPM adaptation in 3 days, 10 RPM in 5 days
• Experiments with rotating tube beds suggest 30 RPM ( ! ) adaptation for head movements
• Athletes undergo much faster head rotations

## Goals

• 1 Test the Vernikos theory: do healthy humans do better in > 1 gee environments? 2 Learn about long term vestibular adaption, and the transition from rotation to non-rotation

• frequent transitions through the hub to 1 gee and 0 RPM
3 Select astronauts for vestibular tolerance for rotating habitats in microgravity 4 Make low BMI people into heros

### Math

a = 9.81 \times gee ~=~ \omega^2 R ~=~ { \Large \left( { 2 \pi } \over T \right) }^2 R ~=~ 4 \pi^2 { \Large { R \over T^2 } } ~~~ T in seconds

gee \times T^2 \approx 4 R ~~~~~ T ~=~ 60 / RPM

R ~=~ { \Large \left( 30 \over RPM \right)}^2 gee

GeePlus (last edited 2017-12-01 18:21:08 by KeithLofstrom)