The Hermanspann Chinook is an American mid-wing, two-seat, experimental research glider that was designed and constructed by Fred Hermanspann and Art Penz.
Design and development
The Chinook and its improved variant, the Chinook S, have been used to study the effect of rain on airfoils and also stall dynamics.
The aircraft is predominantly made from aluminium with the cockpit area made from fiberglass. Its span high aspect ratio wing employs a Wortmann FX67-K-170/17 airfoil. Glidepath control is via hydraulically operated trailing edge flaps that deflect 90°. The landing gear is a hydraulically retractable monowheel. The vertical stabilizer is highly swept.
Only one Chinook was constructed and it was registered with the US Federal Aviation Administration in the Experimental - Amateur-built category.
In August 2011 the Chinook was still registered with the FAA to Hermanspann.
- Original configuration, first flown in 1993.
- Chinook S
- Improved configuration, first flown in 1996.
Specifications (Chinook S)