Engineering:Schleicher ASK 14
| ASK 14 | |
|---|---|
| |
| Role | Motor glider |
| Manufacturer | Alexander Schleicher GmbH & Co |
| Designer | Rudolf Kaiser |
| Number built | 66 |
| Developed from | Schleicher Ka 6E |
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The Schleicher ASK 14 is a West German low-wing, single-seat motor glider that was designed by Rudolf Kaiser and produced by Alexander Schleicher GmbH & Co.[1][2]
The aircraft is often referred to as the Schleicher AS-K 14 or the Schleicher ASK-14, the AS for Alexander Schleicher and the K for Kaiser. The US Federal Aviation Administration designates the aircraft as the Schleicher ASK-14, while Transport Canada and the United Kingdom Civil Aviation Authority call it the Schleicher ASK 14.[1][2][3][4][5]
Design and development
The ASK 14 was developed as a low-wing motorized version of the Schleicher Ka 6E. The powerplant is a 19 kW (25 hp) Hirth F10 K19 four-cylinder, two-stroke engine, made by Hirth and driving a fully feathering propeller.[1][2]
The aircraft is built from wood and covered with doped aircraft fabric covering. The 14.4 m (47.2 ft) span wing employs a NACA 63-618 airfoil at the wing root transitioning to a NACA 63-615 section at the wing tip and features spoilers. The monowheel landing gear is retractable. The cockpit is covered by a bubble canopy that gives all-around visibility.[1][2]
Due to its Ka 6E heritage the handling of the ASK 14 was described by Soaring Magazine in 1983 as "superb".[2]
The ASK 14 was never type certified and aircraft registered in the United States were in the Experimental - Racing/Exhibition category. ASK 14s in Canada are in the category CAR Standard 507.03(5)(a) Aircraft Held a Flight Permit - Private Aircraft prior 01/89. Those in the UK have an EASA Certificate of Airworthiness.[3][4][5]
Operational history
ASK 14s finished second, third and fourth in the single-place class at the first international motorglider competition, that was held at Burg Feuerstein, West Germany in 1970.[1]
In 1971 former Soaring Magazine editor Bennett Rogers set the first United States motorgliding record in an ASK 14, flying 330.5 km (205 mi) out-and-return from Rosamond, California, US.[2]
In July 2011 there were still eight ASK 14s registered with the FAA in the US, two with the UK Civil Aviation Authority and one registered with Transport Canada.[3][4][5]
Specifications (ASK 14)
Data from Sailplane Directory and Soaring[1][2]
General characteristics
- Crew: one
- Wingspan: 14.4 m (47 ft 3 in)
- Wing area: 12.68 m2 (136.5 sq ft)
- Aspect ratio: 16.8:1
- Airfoil: root: NACA 63-618, tip: NACA 63-615
- Empty weight: 245 kg (540 lb)
- Gross weight: 360 kg (794 lb)
- Powerplant: 1 × Hirth F10 K19 four cylinder, two-stroke, 19 kW (25 hp)
- Propellers: 2-bladed fully feathering
Performance
- Maximum glide ratio: 29:1 at 81 km/h (50 mph)
- Rate of sink: 0.75 m/s (148 ft/min) at 72 km/h (45 mph)
- Wing loading: 28.6 kg/m2 (5.9 lb/sq ft)
See also
Aircraft of comparable role, configuration and era
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 Activate Media (2006). "ASK-14 Schleicher". Archived from the original on 29 August 2012. https://web.archive.org/web/20120829145221/http://www.sailplanedirectory.com/PlaneDetails.cfm?PlaneID=17. Retrieved 24 July 2011.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 Said, Bob: 1983 Sailplane Directory, Soaring Magazine, page 131. Soaring Society of America, November 1983. USPS 499-920
- ↑ 3.0 3.1 3.2 Federal Aviation Administration (July 2011). "Make / Model Inquiry Results - ASK 14". http://registry.faa.gov/aircraftinquiry/AcftRef_Results.aspx?Mfrtxt=&Modeltxt=ASK+14&PageNo=1. Retrieved 24 July 2011.
- ↑ 4.0 4.1 4.2 Transport Canada (July 2011). "Canadian Civil Aircraft Register". Archived from the original on 18 July 2011. https://web.archive.org/web/20110718042755/http://wwwapps2.tc.gc.ca/Saf-Sec-Sur/2/ccarcs/aspscripts/en/quicksearch.asp. Retrieved 24 July 2011.
- ↑ 5.0 5.1 5.2 Civil Aviation Authority (United Kingdom) (July 2011). "GINFO Search Results Summary". http://www.caa.co.uk/application.aspx?catid=60&pagetype=65&appid=1&mode=summary&aircrafttype=ASK%2014. Retrieved 24 July 2011.
External links
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