Engineering:Scheibe SF-24 Motorspatz
| SF-24 Motorspatz | |
|---|---|
 | |
| General information | |
| Type | Motor glider |
| National origin | West Germany |
| Manufacturer | Scheibe Flugzeugbau |
| Designer | |
| Number built | 50 |
| History | |
| Introduction date | 1960 |
| First flight | 1960 |
| Developed from | Scheibe Spatz |
The Scheibe SF-24 Motorspatz (English: Motor Sparrow) is a West German high-wing, single-seat motor glider that was designed by Egon Scheibe and produced by Scheibe Flugzeugbau.[1][2]
Derived from the unpowered Scheibe Spatz, the Motor Spatz was described in 1983 by Soaring Magazine as "one of the more primitive of the breed of self-launching sailplanes".
Design and development
The Motorspatz was an early attempt to create a self-launching glider. Scheibe accomplished this by mounting a Hirth engine in the nose of a mostly stock Spatz glider.[1][2]
The SF-24 is constructed with a welded steel tube fuselage that mounts the monowheel landing gear, with a small tail wheel for ground maneuvering. The wings and tail surfaces are built with wooden structures and covered in doped aircraft fabric covering. The wing has a 14.0 m (46 ft) span, employs an Mu 14% airfoil and mounts spoilers for glidepath control.[1][2][3]
The aircraft was not type certified and 50 were built.[1][2]
Operational history
In July 2011 there were two Motorspatz registered in the United States with the Federal Aviation Administration, including one SF-24 in the Experimental - Exhibition category and one SF-24B in the Experimental - Research and Development category.[4]
Variants
Specifications (SF-24)
Data from Sailplane Directory and Soaring[1][2]
General characteristics
- Crew: one
- Wingspan: 14 m (45 ft 11 in)
- Wing area: 11.87 m2 (127.8 sq ft)
- Airfoil: Mu 14%
- Empty weight: 225 kg (496 lb)
- Gross weight: 345 kg (761 lb)
- Powerplant: 1 × Hirth
Performance
- Rate of sink: 1.0 m/s (200 ft/min) at 80 km/h (50 mph)
- Wing loading: 29.21 kg/m2 (5.98 lb/sq ft)
See also
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 Activate Media (2006). "Motorspatz SF-24 Scheibe". Archived from the original on 29 August 2012. https://web.archive.org/web/20120829145312/http://www.sailplanedirectory.com/PlaneDetails.cfm?PlaneID=233. Retrieved 29 July 2011.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 Said, Bob: 1983 Sailplane Directory, Soaring Magazine, page 126. Soaring Society of America, November 1983. USPS 499-920
- ↑ Lednicer, David (2010). "The Incomplete Guide to Airfoil Usage". http://www.ae.illinois.edu/m-selig/ads/aircraft.html. Retrieved 1 July 2011.
- ↑ Federal Aviation Administration (July 2011). "Make / Model Inquiry Results". http://registry.faa.gov/aircraftinquiry/AcftRef_Results.aspx?Mfrtxt=&Modeltxt=SF-24&PageNo=1. Retrieved 29 July 2011.
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