Dynamics of ultralight aircraft : Dive recovery of hang gliders
- Jones, R. T.
- May 1, 1977.
- Physical Description:
- 1 electronic document
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- Longitudinal control of a hang glider by weight shift is not always adequate for recovery from a vertical dive. According to Lanchester's phugoid theory, recovery from rest to horizontal flight ought to be possible within a distance equal to three times the height of fall needed to acquire level flight velocity. A hang glider, having a wing loading of 5 kg sq m and capable of developing a lift coefficient of 1.0, should recover to horizontal flight within a vertical distance of about 12 m. The minimum recovery distance can be closely approached if the glider is equipped with a small all-moveable tail surface having sufficient upward deflection.
- Other Subject(s):
- NASA Technical Reports Server (NTRS) Collection.
- Document ID: 19770017109.
Accession ID: 77N24053.
- No Copyright.
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