AE245_hw8

# AE245_hw8 - AE 245 Performance of Aircraft and Spacecraft...

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AE 245 Performance of Aircraft and Spacecraft Homework Set #8 due 4/3/2000 Problem 1. A spacecraft is in a 400 km altitude circular orbit about the Earth; the orbital plane has an inclination angle of 20 degrees with the equatorial plane. What is the V required so that the spacecraft is placed into a 400 km altitude circular equatorial orbit about the Earth. Give a sketch to describe where on the orbit the burn should occur. Problem 2 . When a satellite is inserted into Earth orbit, the resulting orbit is elliptical with an altitude at perigee of 200 km and an altitude at apogee of 800 km. (a) Find the total V required to circularize the orbit of the satellite by using a one-impulse burn at perigee. What is the period of the resulting circular orbit. Sketch the two orbits, indicating the point where the impulsive burn occurs. (b) Find the total V required to circularize the orbit of the satellite by using a one-impulse burn at apogee. What is the period of the resulting circular orbit. Sketch the two orbits, indicating the point where the impulsive burn occurs. Problem 3 . The Space Shuttle carries a reconnaissance satellite into a circular parking orbit at an altitude of 400 km. The satellite is to be placed into an elliptical orbit with altitude at

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## AE245_hw8 - AE 245 Performance of Aircraft and Spacecraft...

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