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37. The International Space Station (ISS), mass 419000 kg, orbits Earth at altitude 390 km. However, over the course of several months its altitude will “decay” and decrease by 10 km due to drag with Earth’s atmosphere. Rocket thrusters firing continuously for 2.0 orbits are used to boost the ISS back to the correct orbit. (a) Determine the “delta-v” (change in speed) associated with an increase in altitude of 10 km (assuming circular orbits at each altitude). (b) Determine the amount of thrust necessary for the boost – you can treat the situation like pushing an object up a ramp that is 10 km high and two orbits long (ignore drag).

37. The International Space Station (ISS), mass 419000 kg, orbits Earth at altitude 390 km. However, over the course of several months its altitude will “decay” and decrease by 10 km due to drag with Earth’s atmosphere. Rocket thrusters firing continuously for 2.0 orbits are used to boost the ISS back to the correct orbit. (a) Determine the “delta-v” (change in speed) associated with an increase in altitude of 10 km (assuming circular orbits at each altitude). (b) Determine the amount of thrust necessary for the boost – you can treat the situation like pushing an object up a ramp that is 10 km high and two orbits long (ignore drag).

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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37. The International Space Station (ISS), mass 419000 kg, orbits Earth at altitude 390 km. However, over the course of several months its altitude will “decay” and decrease by 10 km due to drag with Earth’s atmosphere. Rocket thrusters firing continuously for 2.0 orbits are used to boost the ISS back to the correct orbit. (a) Determine the “delta-v” (change in speed) associated with an increase in altitude of 10 km (assuming circular orbits at each altitude). (b) Determine the amount of thrust necessary for the boost – you can treat the situation like pushing an object up a ramp that is 10 km high and two orbits long (ignore drag).
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