various fuselage frames are interchangeable and any can be added to the same basic wing. Swift gliders with engines originally had Arplast EcoProp folding propellers, which feather for soaring when then engine is turned off. Powered Swift gliders are not foot-launched, having instead two main wheels in tandem layout, and small wing-tip castors. Current types As of October 2020, Aériane are producing only 2 versions of the Swift'Lite: The Swift’Light, foot-launchable, and The E-Swift’Light, with an electric motor. Specifications (Swift'Lite) data from flight manual Technical data and speeds Empty weight without fairing: 48kg Maximum take off weight: 158 kg (version without motor) Span: 12,8 m Surface area: 12,5 m² Aspect ratio: 12,9 Sweep (at 25% of the chord): 20° Recommended pilot weight: 55 - 100 kg Vne (Never Exceed Speed): 120 km/h Vra (Maximum Rough Air Speed): 100 km/h Vfe (Maximum speed with flaps set to 20° or more): 80 km/h Va (Manœuvre Speed): 85 km/h Vs (Stall Speed): flap sets to 0° at maximum take-off weight: 37 km/h flap sets to 20° at maximum take-off weight: 32 km/h Best Glide: 27: 1 @ 70 km/h Minimum Sink: 0,6 m/s @ 43 km/h Load Factor: + 5,3 g/- 2,65 g (with 1.5 safety coefficient). Specifications (Swift) References External links Official website 1992 video footage 1992 Stanford University article Flying characteristics of the hybrid version, Ruhm sailplanes (UL RuhmAir Leichtflugzeuge / Mannfred Ruhm) Hang gliders Tailless aircraft 1990s United States sailplanes 1990s United States ultralight aircraft Aircraft first flown in 1989 Sailplanes designed for foot-launching