The Whisper Aircraft Whisper motor glider is a South African two-seat kit aircraft that was designed by Russell Phillips in 2004 and is produced by Whisper Aircraft of Port Elizabeth. Major assemblies are completed at the factory with assembly intended to be completed by the owner. It is powered by a four-cylinder Limbach L2000 aero engine with options for the 85 hp (63 kW) Jabiru 2200 and 80 hp (60 kW) Rotax 912 available. Whisper Aircraft Whisper motorglider whisper-mg 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, and Limbach L2000. The design was developed into the Whisper X350 Generation II kit aircraft in 2015.
