GATE_AE_2027_MOCK_04_Q52 GATE 2027 Aerospace Engineering All-India Master Mock 04 (Aerospace Structures, Thin-Walled Beams & Aeroelasticity) NAT · 2 Marks
Flight Mechanics & Space Dynamics • Space Dynamics & Orbital Mechanics • Hohmann Transfer & Orbital Energy

A satellite moves in an elliptical orbit around Earth with perigee radius r_p = 7000 km and apogee radius r_a = 35000 km. What is the semi-major axis a in kilometers?

Answer Key:
21000

Step-by-Step Verified Solution

### Solution: a = (r_p + r_a) / 2 = (7000 + 35000) / 2 = 42000 / 2 = 21000 km. Correct: 21000.
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