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The
power plant Powerful and reliable
The heart of the Apis® 2 powerplant is a aircooled single cylinder Hirth F33 with intake and exhaust silencer. It generates 27 hp from 303 ccm.The 148 cm ground adjustable carbon fibre propeller has been developed by Martin Wezel specially for the Apis® 2. The noise level of the Apis® 2 is at a very low 57.7 db(A).Very convenient ist the filler opening at the fuselage which allows filling directly from the fuel container. |
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The powerplant is retractable. The process is
controlled by ECU (Engine Control Unit) a newly developed electronic instrument by TL elektronic. This allows the
pilot to fully concentrate on flying the aircraft when in need of an engine restart in the
air. The extension of the powerplant is started by switching on the main switch and the
ignition. The ECU then takes over the process and the pilot can start the engine with the
starter button. It is not necessary to manually control fuel valve or a choke lever. The
ECU is optimizing the engine according to the temperature. During the retraction procedure
for the powerplant the ECU is activating the propeller stop as soon as the RPM allows.
Then the ECU is controlling the full procedure until the engine is completely stowed away.
The whole process takes about 20 seconds.
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