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A 36 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". 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".
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 .1 Humans evolved to run, hence may be optimized for > 1 gee  .'''(1)''' Humans evolved to run, hence may be optimized for > 1 gee
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 .2 The human vestibular system can adapt to high RPMS  .'''(2)''' The human vestibular system can adapt to high RPMS
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  . Experiments with rotating tube beds suggest 30 RPM (!) adaptation for head movements   . Experiments with rotating tube beds suggest 30 RPM ( ! ) adaptation for head movements
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 . 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
  . frequent transitions through the hub to 1 gee and 0 RPM
 . Select astronauts for vestibular tolerance for rotating habitats in microgravity
 . Make low BMI people into heros
 .'''(1)''' Test the Vernikos theory: do healthy humans do '''better''' in > 1 gee environments?
  . corollary: there is no lower-than-one-gee "sweet spot"; Moon and Mars gravity may accelerate aging as well
 .'''(2)'''
Learn about long term vestibular adaption, and the transition from rotation to non-rotation
  . test 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 '''''rotonauts''''' into '''heros'''


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$ a = 9.81 \times gee = \omega^2 R = { \Large { { 2 \pi } \over T }^2 } R = 4 \pi^2 { \Large { R \over T^2 } } ~~~ T $ in seconds $ 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
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$ gee \times T^2 \approx 4 R ~~~~~ T = 60 / RPM $ $ gee \times T^2 \approx 4 R ~~~~~ T  ~=~ 60 / RPM $
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$ R = { \Large \left( 30 \over RPM \right)^2 } gee $




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

Gee Plus

Adapting to a High RPM Environment


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?

    • corollary: there is no lower-than-one-gee "sweet spot"; Moon and Mars gravity may accelerate aging as well
  • (2) Learn about long term vestibular adaption, and the transition from rotation to non-rotation

    • test 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 rotonauts 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)