Scheibe SF-24 Motorspatz

SF-24 Motorspatz
Role	Motor glider
National origin	West Germany
Manufacturer	Scheibe Flugzeugbau
Designer	Egon Scheibe
First flight	1960
Introduction	1960
Status	Production completed
Number built	50
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

SF-24

Initial version ^{[1] [2]}

SF-24A

Improved version ^{[1] [2]}

SF-24B

Improved version ^{[1] [2]}

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

• List of gliders

References

1. Activate Media (2006). "Motorspatz SF-24 Scheibe". Archived from the original on 29 August 2012. Retrieved 29 July 2011.
2. Said, Bob: 1983 Sailplane Directory, Soaring Magazine , page 126. Soaring Society of America, November 1983. USPS 499-920
3. Lednicer, David (2010). "The Incomplete Guide to Airfoil Usage". Archived from the original on 20 April 2010. Retrieved 1 July 2011.
4. Federal Aviation Administration (July 2011). "Make / Model Inquiry Results" . Retrieved 29 July 2011.