Hermanspann Chinook: Difference between revisions
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The aircraft is predominantly made from [[aluminium]] with the [[cockpit]] area made from [[fiberglass]]. Its {{convert|57|ft|m|1|abbr=on}} span high [[aspect ratio (wing)|aspect ratio]] wing employs a Wortmann FX67-K-170/17 airfoil. Glidepath control is via hydraulically operated [[trailing edge]] [[Flap (aircraft)|flaps]] that deflect 80°. The [[landing gear]] consists of hydraulically retractable nose gear and main gear. The [[vertical stabilizer]] is highly swept.<ref name="SD" /><ref name="Incomplete">{{Cite web|url = http://www.ae.illinois.edu/m-selig/ads/aircraft.html|title = The Incomplete Guide to Airfoil Usage |accessdate = 14 August 2011|last = Lednicer |first = David |authorlink = |year = 2010}}</ref> |
The aircraft is predominantly made from [[aluminium]] with the [[cockpit]] area made from [[fiberglass]]. Its {{convert|57|ft|m|1|abbr=on}} span high [[aspect ratio (wing)|aspect ratio]] wing employs a Wortmann FX67-K-170/17 airfoil. Glidepath control is via hydraulically operated [[trailing edge]] [[Flap (aircraft)|flaps]] that deflect 80°. The [[landing gear]] consists of hydraulically retractable nose gear and main gear. The [[vertical stabilizer]] is highly swept.<ref name="SD" /><ref name="Incomplete">{{Cite web|url = http://www.ae.illinois.edu/m-selig/ads/aircraft.html|title = The Incomplete Guide to Airfoil Usage |accessdate = 14 August 2011|last = Lednicer |first = David |authorlink = |year = 2010}}</ref> |
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The improved Chinook S features an improved wing tip design, system and structure refinements and a ballistic recovery system (BRS-1200). |
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After conclusion of a number of research projects (rain effects, performance measurements, stall dynamics...) the sailplane has been and still is (2015) being used extensively for cross-country flying, having made a total of 5 crossings of the Cacscade mountains and having set 4 Washington state soaring records. |
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Only one Chinook was constructed and it was registered with the US [[Federal Aviation Administration]] in the ''[[Homebuilt aircraft|Experimental - Amateur-built]]'' category.<ref name="SD" /><ref name="FAAReg" /> |
Only one Chinook was constructed and it was registered with the US [[Federal Aviation Administration]] in the ''[[Homebuilt aircraft|Experimental - Amateur-built]]'' category.<ref name="SD" /><ref name="FAAReg" /> |
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Revision as of 19:00, 21 March 2015
| Chinook | |
|---|---|
| Role | Glider |
| National origin | United States |
| Designer | Fred Hermanspann and Art Penz |
| First flight | 1993 |
| Status | Production completed |
| Number built | One |
The Hermanspann Chinook is an American mid-wing, two-seat, experimental research glider that was designed and constructed by Fred Hermanspann and Art Penz.[1][2]
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.[1]
The aircraft is predominantly made from aluminium with the cockpit area made from fiberglass. Its 57 ft (17.4 m) span high aspect ratio wing employs a Wortmann FX67-K-170/17 airfoil. Glidepath control is via hydraulically operated trailing edge flaps that deflect 80°. The landing gear consists of hydraulically retractable nose gear and main gear. The vertical stabilizer is highly swept.[1][3] The improved Chinook S features an improved wing tip design, system and structure refinements and a ballistic recovery system (BRS-1200). After conclusion of a number of research projects (rain effects, performance measurements, stall dynamics...) the sailplane has been and still is (2015) being used extensively for cross-country flying, having made a total of 5 crossings of the Cacscade mountains and having set 4 Washington state soaring records.
Only one Chinook was constructed and it was registered with the US Federal Aviation Administration in the Experimental - Amateur-built category.[1][2]
Operational history
In March 2015 the Chinook was still registered with the FAA to Hermanspann.[2]
Variants
- Chinook
- Original configuration, first flown in 1993.[1][2]
- Chinook S
- Improved configuration, first flown in 1996.[1]
Specifications (Chinook S)
Data from Sailplane Directory[1]
General characteristics
- Crew: one
- Capacity: one passenger
- Wingspan: 57 ft (17 m)
- Wing area: 143 sq ft (13.3 m2)
- Aspect ratio: 22.7
- Airfoil: Wortmann FX67-K-170/17
- Empty weight: 630 lb (286 kg)
- Gross weight: 1,050 lb (476 kg)
Performance
- Maximum glide ratio: 40:1 at 61 mph (98 km/h)
- Rate of sink: 144 ft/min (0.73 m/s)
- Wing loading: 7.34 lb/sq ft (35.8 kg/m2)
See also
Related lists
References
- ^ a b c d e f g Activate Media (2006). "Chinook S Hermanspann". Retrieved 14 August 2011.
- ^ a b c d Federal Aviation Administration (21 March 2015). "Make / Model Inquiry Results N100FH". Retrieved 21 March 2015.
- ^ Lednicer, David (2010). "The Incomplete Guide to Airfoil Usage". Retrieved 14 August 2011.