Astrodynamics 101 - DerAstrodynamics.com
Astrodynamics 101 - DerAstrodynamics.com
Astrodynamics 101 - DerAstrodynamics.com
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5. Solar Radiation Pressure<br />
a (t)<br />
solar<br />
radiation<br />
pressure<br />
v (t )<br />
object at t<br />
r (t)<br />
Earth<br />
Example:<br />
MEO / GEO object at t<br />
r = 7,000 / 40,000 km<br />
Accelerations on Satellite and Rocket (4)<br />
Sun<br />
Photons<br />
r (t)<br />
sun<br />
solar<br />
radiation<br />
pressure<br />
Earth<br />
6<br />
a = 0.1 x 10 m/s 2<br />
Atmo<br />
6. Atmospheric (Air) Drag<br />
sphere<br />
Earth<br />
a = 0<br />
drag<br />
v (t )<br />
r (t)<br />
m/s 2<br />
Earth<br />
Atmosphere<br />
Air<br />
a (t)<br />
drag<br />
effective height<br />
for drag:<br />
Sat. = ~ 200 km<br />
Missile<br />
~<br />
= 60 km<br />
(for short time<br />
prediction)
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