Hall Ibex

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Hall Ibex
Role Experimental glider
National origin United States
ManufacturerStan Hall
DesignerStan Hall
First flight1968 [1]
StatusIn storage
Primary userStan Hall
Number built1

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]

Contents

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 May 10, 2011.[ permanent dead link ]
  3. 1 2 SSA. "Sailplane Directory". Archived from the original on April 13, 2011. Retrieved March 31, 2011.
  4. ↑ Soaring, November 1967
  5. ↑ Soaring, October 1974
  6. 1 2 National Soaring Museum (2011). "Sailplanes in Our Collection". Archived from the original on May 16, 2011. Retrieved February 26, 2011.
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