| Hall Ibex | |
|---|---|
| General information | |
| Type | Experimental glider |
| National origin | United States |
| Manufacturer | Stan Hall |
| Designer | Stan Hall |
| Status | In storage |
| Primary user | Stan Hall |
| Number built | 1 |
| History | |
| First flight | 1968 [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]
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