High Quality Content by WIKIPEDIA articles! The Fournier RF 4 is a single-seater motor glider designed by Rene Fournier in 1966. It is an aerobatic version of the Fournier RF-3. A motor glider is a fixed-wing aircraft that can be flown with or without engine power. The FAI Gliding Commission Sporting Code definition is: Motor glider: A fixed wing aerodyne equipped with a means of propulsion (MoP), capable of sustained soaring flight without thrust from the means of propulsion.

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