Rolladen-Schneider LSD Ornith

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The Rolladen-Schneider LSD Ornith is the first two-seater sailplane to have been built from plastic composites. The single exemplar was designed by Wolf Lemke and Karl Pummer and first flew in May 1972, a few weeks before the SB-10. As far as possible, components from the serially-produced LS1 sailplane were used, including the fuselage forms. This resulted in a cramped cockpit, where the pedals of the rear seat are almost upon the front seat control stick. The two-piece canopy extends back up to the wing spar. The undercarriage comprises fixed wheel and tailskid. The very large rudder is quite striking. The wings were extended at the root by approximately one and a half metres, yielding a span of eighteen metres, with two degrees of negative sweep. Schempp Hirth airbrakes sprout from the wing upper surfaces. Separate actions for the nose-hook and centre of gravity hook are the only control oddity in this pleasant-flying design. The empty weight of only 287 kg is remarkably light for a double-seater.

The Ornith achieved some notable gliding records flying from Switzerland and South Africa. Today it is based at Aschaffenburg Airfield (EDFC) in Germany.

pecifications

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crew=Two
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span m=18.00
span ft=59
span in=1
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wing area sqm=12.4
wing area sqft=133
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aspect ratio= 26.1
empty weight kg=287
empty weight lb=631
gross weight kg=450
gross weight lb=990
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glide ratio= >40
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sink rate ms= 0.6
sink rate ftmin= 120

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References

* [http://www.sailplanedirectory.com Sailplane Directory]
*Simons M, Segelflugzeuge 1965-2000, Eqip, 2004