The Pegasus launch vehicle reaches its second-stage burnout at an altitude of 192 km, inertial velocity v = 5.49 km/s, and flight-path angle y = 25.8°. The launch vehicle then coasts in this orbit until it ignites its third stage when flight-path angle decreases to 2.2°. Determine: a) Semimajor axis of the Pegasus orbit after second-stage burnout. b) Eccentricity of the Pegasus orbit after second-stage burnout. c) The altitude and velocity of the Pegasus launch vehicle when the third stage is ignited.
The Pegasus launch vehicle reaches its second-stage burnout at an altitude of 192 km, inertial velocity v = 5.49 km/s, and flight-path angle y = 25.8°. The launch vehicle then coasts in this orbit until it ignites its third stage when flight-path angle decreases to 2.2°. Determine: a) Semimajor axis of the Pegasus orbit after second-stage burnout. b) Eccentricity of the Pegasus orbit after second-stage burnout. c) The altitude and velocity of the Pegasus launch vehicle when the third stage is ignited.
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The Pegasus launch vehicle reaches its second-stage burnout at an altitude of
192 km, inertial velocity v = 5.49 km/s, and flight-path angle y = 25.8°. The launch
vehicle then coasts in this orbit until it ignites its third stage when flight-path
angle decreases to 2.2°. Determine:
a) Semimajor axis of the Pegasus orbit after second-stage burnout.
b) Eccentricity of the Pegasus orbit after second-stage burnout.
c) The altitude and velocity of the Pegasus launch vehicle when the third stage is
ignited.
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