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2. Moller M400 Skycar - Wikipedia

   en.wikipedia.org/wiki/Moller_M400_Skycar

   The Rotapower engines used in the prototypes are being developed by an affiliate Moller company called Freedom Motors. [6] Each power unit comprises a Wankel rotary engine directly driving a ducted fan. [7] [8] The housing is lined with Kevlar to contain the fan blades in the event of failure. [7]

3. Ducted fan - Wikipedia

   en.wikipedia.org/wiki/Ducted_fan

   The most common ducted fan arrangement used in full-sized aircraft is a turbofan engine, where the power to turn the fan is provided by a gas turbine. High bypass ratio turbofan engines are used on nearly all civilian airliners , while military fighters usually make use of the better high-speed performance of a low bypass ratio turbofan with a ...

4. Radio-controlled aircraft - Wikipedia

   en.wikipedia.org/wiki/Radio-controlled_aircraft

   A radio-controlled aircraft (often called RC aircraft or RC plane) is a small flying machine that is radio controlled by an operator on the ground using a hand-held radio transmitter. The transmitter continuously communicates with a receiver within the craft that sends signals to servomechanisms (servos) which move the control surfaces based on ...

5. Bell X-22 - Wikipedia

   en.wikipedia.org/wiki/Bell_X-22

   In 1962, the United States Navy announced their request for two prototype aircraft with V/STOL capability, powered by four ducted fan nacelles. Bell Helicopters already had extensive experience with VTOL aircraft and was able to utilize an already developed test mockup. In 1964 the prototype, internally referred to by Bell as Model D2127, was ...

6. Model aircraft - Wikipedia

   en.wikipedia.org/wiki/Model_aircraft

   The fans were generally powered by 2 stroke engines at high RPM. They generally had 0.40 to 0.90 cu in (6.6 to 14.7 cc) displacements, but some were as small as 0.049 cu in (0.80 cc). This fan-in-tube design has been adopted successfully for electric-powered jets while glow engine powered ducted-fan aircraft are now rare.

7. Model engine - Wikipedia

   en.wikipedia.org/wiki/Model_engine

   Four-stroke model engines have been made in sizes as small as 0.20 in3 (3.3 cc) for the smallest single-cylinder models, all the way up to 3.05 in3 (50 cc) for the largest size for single-cylinder units, with twin- and multi-cylinder engines on the market being as small as 10 cc for opposed-cylinder twins, while going somewhat larger in size ...