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How does gravity help a plane fly?

Updated: 9/14/2023
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15y ago

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Gravity lends stability to an conventional aircraft. This is because the nose of the aircraft tends to tip the balance slightly forward of the center of lift (1/3 chord of the wing back from the leading edge (approx.)). The downforce from the heavy nose is counteracted by the downward aerodynamic force from the horizontal stabilizer (tail). So, without gravity, the nose of the aircraft would tend to rise if the elevator were not moved to counteract the loss of nose down force. The plane could be re-rigged to be balanced, but there are other more efficient designs than the conventional wing/tail design to cope with a gravity-free environment. Also, gravity is what allows a sailplane to traverse across the ground, for without gravity, a sailplane would behave like a neutrally buoyant hot air balloon.

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15y ago
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Q: How does gravity help a plane fly?
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