3/232 Just after launch from the earth, the space-shuttle orbiter is in the 37 x 137-mi orbit shown. The first time that the orbiter passes the apogee A, its two orbital- maneuvering-system (OMS) engines are fired to circularize the orbit. If the weight of the orbiter is 175,000 lb and the OMS engines have a thrust of 6000 lb each, determine the required time duration At of the burn. ✓Answer At = 71.6 sec 37 mi PROBLEM 3/232 137 mi-

Elements Of Electromagnetics
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3/232 Just after launch from the earth, the space-shuttle orbiter is in the 37 × 137-mi orbit shown. The first time that the orbiter passes the apogee A, its two orbital-
maneuvering-system (OMS) engines are fired to circularize the orbit. If the weight of the orbiter is 175,000 lb and the OMS engines have a thrust of 6000 lb each,
determine the required time duration At of the burn.
✓Answer
At = 71.6 sec
37 mi
PROBLEM 3/232
137 mi
Transcribed Image Text:3/232 Just after launch from the earth, the space-shuttle orbiter is in the 37 × 137-mi orbit shown. The first time that the orbiter passes the apogee A, its two orbital- maneuvering-system (OMS) engines are fired to circularize the orbit. If the weight of the orbiter is 175,000 lb and the OMS engines have a thrust of 6000 lb each, determine the required time duration At of the burn. ✓Answer At = 71.6 sec 37 mi PROBLEM 3/232 137 mi
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