Hall Ibex

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]

Design & Development

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]

Operational history

The Ibex was still flying in 1980 and was eventually donated to the National Soaring Museum.[6]

Aircraft on display

Specifications (Hall Ibex)

Data from Sailplane Directory[3]

General characteristics

Performance

See also


References

  1. 1 2 Said, Bob: 1983 Sailplane Directory, Soaring Magazine, page 43. Soaring Society of America, November 1983. USPS 499-920
  2. ↑ Federal Aviation Administration (May 2011). "Make / Model Inquiry Results". Retrieved 10 May 2011.
  3. 1 2 SSA. "Sailplane Directory". Retrieved 31 March 2011.
  4. ↑ Soaring, November 1967
  5. ↑ Soaring, October 1974
  6. 1 2 National Soaring Museum (2011). "Sailplanes in Our Collection". Retrieved 26 February 2011.

External links

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