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Thread: Operation Sigma 1966-1971
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Old 14th Dec 2010, 19:56
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roys
 
Join Date: Sep 2010
Location: halifax west yorkshire
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Operation Sigma 1966-1971
My father worked on this project from January 1967 until June 1969 as designer.Here are some original photos of the test section built in the summer of 1967 at Slingsby Sailplanes, Kirkbymoorside,N Yorkshire.
Harry Luck with the test specimen.

Flap retracted.

Flap extended.
Last edited by roys; 14th Dec 2010 at 20:00. Reason: To add location
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