Operation Sigma Sigma

Sigma
General information
TypeOpen class sailplane
National originUnited Kingdom
ManufacturerOperation Sigma Ltd
Designer
John Sellars
Statusstill flying
Number built2
History
First flight12 September 1971

The Sigma is an experimental glider developed in Britain from 1966 by a team led by Nicholas Goodhart. After disappointing performance during flight testing the Sigma was passed on to a Canadian group which carried out modifications, making the Sigma more competitive.

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