Whisper Aircraft Whisper motorglider

The Whisper motorglider is equally at home soaring in rising air as a glider, or motoring long distances as a roomy, yet fast touring aircraft.

The Whisper was designed for the homebuilder. Every component has been optimized to ease the task of the homebuilder. The aircraft can be built from a "basic package" or from a "fast build package" depending on how many hours the builder wishes to spend on the project. Components not supplied in these packages can be manufactured by the builder or ordered from the factory. All hardware is ordered directly from Aircraft Spruce & Specialty by the builder.

The Whisper can be built with a wingspan of 16m (52.5') or 12m (39.4') to suit individual requirements. With the longer wing the aircraft has a glide ratio of 28:1 and a minimum sink rate of 200fpm which makes it a very capable glider. The 21USG fuel tank and the 115MPG cruise speed also make the aircraft capable of very long powered flights. The 4'2" wide cabin allows for very comfortable side by side seating. The aircraft can be built with conventional or nose wheel undercarriage.

The aircraft structure is fiberglass and the wing has been tested to an ultimate load of 10.6g. Engine options are VW2100, Jabiru 2200/3300, Rotax 912/S

Whisper Motorglider
Engine: Limbach L2000 or similar VW based conversion
Wing span 16m
Wing area 15sq.m   
Aspect ratio 16
Length 7.16m
Empty weight  500 kg   
Max all up weight  775 kg   
Fuel capacity  85 litres   
Prop Hoffman 3 position or fixed pitch wooden.
Rate of Climb (gross weight at sea level) 3.6m/s (700ft/min)
Max level speed 210km/h (113kts)
Cruise speed (75% power) 180km/h (95kts)
Vne 250km/h (132kts)   
Stall speed 72km/h (38kts)
Va 160km/h (85kts)
Cruise fuel consumption 12litres/hr (3.2USG/hr)   
Range 1200km (no reserves)
Take off roll 180m
Min sink speed 0.9m/s at 80km/h
Glide ratio  1:28 at 105km/h

Whisper Xpress
Engine Limbach L2000 or similar VW based conversion
Wing span 12m   
Wing area 12.5sq.m   
Aspect ratio 11
Length 7.16m
Empty weight 450 kg   
Max all up weight 720 kg   
Fuel capacity 85 litres   
Prop Fixed Pitch – wooden
Rate of Climb (gross weight at sea level) 2.54m/s (500ft/min)
Max level speed 210km/h (113kts)
Cruise speed (75% power) 180km/h (95kts)
Vne 250km/h (132kts)   
Stall speed 74km/h (38kts)
Va 160km/h (85kts)
Cruise fuel consumption 12litres/hr (3.2USG/hr)   
Range 1200km (no reserves)
Take off roll 250m (470m to clear 50 ft obstacle)