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Find delta V total for the four cases Given: Rorbit 1 = 6570 km Rorbit 2 = 42,160 km iorbit 1 = 28.5 iorbit 2

Find delta V total for the four cases

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Given: Rorbit 1 = 6570 km Rorbit 2 = 42,160 km iorbit 1 = 28.5 iorbit 2 = 0 Find: AV total Table 6-1 Case 4 requires the least amount of AV. Case 1 O Do a 28.5 inclination change using a simple plane change. Then do the Hohmann Transfer, AV and AV. AV simple = 3.83 km/s (in orbit 1) AV Hohmann = 3.94 km/s AVtotal = 7.77 km/s Case 2 Do the Hohmann Transfer, AV, and AV. Then do the 28.5 inclination change using a simple plane change. AV Hohmann = 3.94 km/s Case 3 Do a combined plane change at perigee of the transfer orbit. Do AV2 of Hohmann Transfer. AV combined = 5.04 km/s (at perigee) AV simple= 1.51 km/s (in AV=1.48 km/s orbit 2) AV total = 5.45 km/s AV total = 6.52 km/s Case 4 Do AV of Hohmann Transfer. Do combined plane change at apogee of transfer orbit. AV = 2.46 km/s AV combined = 1.84 km/s (at apogee) AVtotal = 4.30 km/s

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