| Hall Ibex | |
|---|---|
| Role | Experimental glider |
| National origin | USA |
| Manufacturer | Stan Hall |
| Designer | Stan Hall |
| First flight | 1968[1] |
| Status | In Storage |
| Primary user | Stan Hall |
| Number built | 1 |
The Hall Ibex is an experimental, American, gull winged, single seat glider that was designed by Stan Hall and first flown in 1968.[1][2]
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The Ibex was designed by Hall to investigate the reduced wetted area of the pod and boom configuration, hands off spiral stability of a gull wing, and the low speed performance of wide NACA slotted flaps. It also features a V tail, 135 lb (61 kg) of water ballast and a 15 m (49.2 ft) wingspan to comply with FAI Standard Class rules.[3] On one of its first flights the Ibex showed significant tail flutter. Initially Hall considered replacing the tail with a conventional empennage and tail[4] but ended up moving the ruddervator counterweights from the tips to the roots which eliminated the problem.[5]
The Ibex was still flying in 1980 and was eventually donated to the National Soaring Museum.[6]
Data from Sailplane Directory[3]
General characteristics
Performance
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