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jose medina pedraza
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why spacecraft launches are usually terminated at either perigee or apogee?
Who says they are? I'm not even sure what you are talking about as it doesn't seem to make sense.jose medina pedraza said:why spacecraft launches are usually terminated at either perigee or apogee?
jose medina pedraza said:why spacecraft launches are usually terminated at either perigee or apogee?
Drakkith said:Perhaps the OP is referring
The radius of the orbit is not 22,236 miles. Take a trip to Google and look up what reference point that 22,236 figure is measured from.jose medina pedraza said:Yes Drakkith, that's what I meant, but which formulas do I use to calculate the radius 35,786 km (22,236 miles), by knowing that its period is 24 H.
A spacecraft launch is the process of sending a spacecraft or rocket into space. It typically involves the use of a launch vehicle, such as a rocket, to propel the spacecraft out of Earth's atmosphere and into orbit.
Perigee and apogee are terms used to describe the closest and farthest points in an object's orbit around a celestial body, such as the Earth. Perigee refers to the point in the orbit where the object is closest to the Earth, while apogee refers to the point where the object is farthest from the Earth.
Spacecraft launches often terminate at perigee or apogee in order to take advantage of the object's position in its orbit. Launching at these points can require less fuel and energy, making the launch more efficient and cost-effective.
Terminating a spacecraft launch at perigee or apogee can have several benefits, including reducing the amount of fuel and energy needed for the launch, increasing the accuracy and stability of the spacecraft's orbit, and allowing for easier insertion into the desired orbit.
While terminating a spacecraft launch at perigee or apogee can have many benefits, there are also some risks and challenges involved. These can include potential changes in the spacecraft's orbit due to external factors, such as gravitational forces from other celestial bodies, and the need for precise timing and calculations to ensure a successful launch.