The Roberts Cygnet is an American high-wing, cruciform tail, single-seat, glider that was designed and produced by Donald Roberts as a contender for the IGC World Class sailplane.
[1] The Cygnet was the sole US entrant in the competition for the World Class sailplane, losing out to the Polish Politechnika Warszawska PW-5.
The prototype was finished and first flown in 1992[1] The aircraft is made from steel tubing and aluminium, with fiberglass fairings.
Its 13 m (42.7 ft) span wing employs a Somers-Maughmer SM701 airfoil and features balanced top and bottom DFS-style air brakes for glidepath control.
[1][2] In August 2011 the sole Cygnet built was still listed on the US Federal Aviation Administration registry.