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8 votes

Rocket engine with lowest Isp to reach orbit

The only French orbital rocket ever flown was the Diamant. In the first configuration (Diamant A), the first stage only had, according to Wikipedia and a document produced by the engine manufacturer, ...
Xx_DrkLeo_xX's user avatar
1 vote

Does earth's revolving around sun affect polar orbit ground track?

Ignoring precession and perturbation of the satellite's orbit due to the influence of other masses in the solar system, the satellite's orbital axis and the Earth's rotational axis will maintain their ...
phil1008's user avatar
  • 5,634
1 vote

Calculating change to radio signal propagating around via satellite orbits

Answer: According to Uncle Albert, the speed of light ā€œcā€ will always be measured the same in an inertial frame of reference. So both the prograde and retrograde signals will travel at the same ...
Woody's user avatar
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