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Air Energy AE-1 Silent

AE-1 Silent
Role - Ultralight sailplane
National origin - Germany
Manufacturer - Air Energy
First flight - August 1997

The Air Energy AE-1 Silent is a German self-launching ultralight sailplane powered by an electric motor. Designed and built by Air Energy, the AE-1 Silent is also marketed by Alisport of Italy, see Alisport Silent 2 Targa. It first flew in August 1997.
Design and development
The Silent is a conventional composite monoplane glider with a retractable 13 kW (17 hp) electric motor driving a 1.92m propeller.
The aircraft was originally marketed with a nickel–cadmium battery pack, but in 2005 this was replaced with a lithium polymer battery system that gives three times the range of the early installation.
Specifications
(Data from manufacturer)
General characteristics
Crew: 1
Wingspan: 12 m (39 ft 4 in)
Wing area: 10.3 m2 (111 sq ft)
Aspect ratio: 14
Empty weight: 195 kg (430 lb)
Gross weight: 300 kg (661 lb)
Powerplant: 1 × Battery-powered electric motor , 13 kW (17 hp)
Performance
Maximum speed: 180 km/h (112 mph, 97 kn)
Service ceiling: 2,000 m (6,560 ft)
Rate of climb: 2.2 m/s (433 ft/min)
Rate of sink: 0.78 m/s (154 ft/min)