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Astrodynamics 101 - DerAstrodynamics.com

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7<br />

V<br />

v (t )<br />

object at t<br />

2<br />

4<br />

Protons<br />

r (t)<br />

1<br />

Air<br />

6<br />

Moon<br />

5<br />

Earth<br />

r (t )<br />

1<br />

Accelerations Summary (6)<br />

v (t )<br />

1<br />

object<br />

at t 1<br />

3<br />

Sun<br />

1. Earth low gravity<br />

2. Earth high gravity<br />

3. Sun gravity<br />

4. Moon gravity<br />

5. Proton Pressure<br />

6. Air Drag<br />

7. Thrust Acceleration<br />

Kepler Problem<br />

Given: r (t<br />

1<br />

) , v (t ) , t , t<br />

1 1<br />

Find: r (t) , v (t)<br />

(Pull)<br />

(Pull)<br />

(Pull)<br />

(Pull)<br />

(Push)<br />

(Pull)<br />

(Push)

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