Physics · Space Mechanics and Aerospace
With reference to sub-orbital space tourism flights, which of the following statements is INCORRECT?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Sub-orbital spacecraft require continuous, active engine propulsion throughout their entire trajectory in space to counteract Earth's gravity.✓
- 2The duration of sub-orbital tourism flights is relatively brief due to the absence of continuous orbital velocity.
- 3Vehicles used for sub-orbital flight follow a parabolic flight trajectory, resulting in a brief phase of microgravity for the passengers.
- 4Sub-orbital flights cross the boundary of space (Kármán line) but do not achieve the necessary orbital velocity to remain in a stable Earth orbit.
Correct answer
Sub-orbital spacecraft require continuous, active engine propulsion throughout their entire trajectory in space to counteract Earth's gravity.
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