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Upwind: the rotor harvests power from the oncoming air and drives the wheels, as would a wind turbine. Downwind: when the vehicle is traveling faster than the windspeed, the ground is the fastest-moving medium relative to the vehicle, so the wheels harvest the power and impart it to the rotor, which propels the vehicle. [8]
Slovak designer Professor Štefan Klein began working on flying cars in the late 1980s. Having developed the AeroMobil, he left the company to develop a new idea as the AirCar, and set up Klein Vision with colleague Anton Zajac. [2] [3] The main fuselage of the AirCar doubles as a two-seat road car with four large road wheels.
Upwind, the rotor harvests the power from the oncoming air and drives the wheels, as would a wind turbine. Downwind, when the vehicle is traveling faster than the windspeed, the ground is the fastest-moving medium relative to the vehicle, so the wheels harvest the power and impart it to the rotor, which propels the vehicle. [18]
The tip speed of a propeller blade is a function of the rotational speed and the length of the blade. As the engine power increased, longer blades were needed to apply this power to the air while operating at the most efficient RPM of the engine. The velocity of the air is also a function of the forward speed of the aircraft.
It is propelled by the release and expansion of the air within a motor adapted to compressed air. The car might be powered solely by air, or combined (as in a hybrid electric vehicle) with other fuels such as gasoline, diesel, or an electric plant with regenerative braking. Compressed-air cars use a thermodynamic process. Air cools when ...
When operated as an aircraft, the road transmission was left in neutral (though backing up during taxiing was possible by the using the reverse gear). On the road, the wings and tail unit were towed behind the vehicle. Taylor also put the propeller on the back of the car so it did not have to be removed when the Aerocar went on the road. [1]
A friction motor is a simple mechanism to propel toy cars, trucks, trains, action figures and similar toys. The motor consists of a large flywheel which is connected to the drive wheels of the toy via a gear train with very low gear ratio, so that the flywheel revolves much faster than the wheels. The flywheel's axis is perpendicular to the ...
The speeds needed for takeoff are relative to the motion of the air (indicated airspeed). A headwind will reduce the ground speed needed for takeoff, as there is a greater flow of air over the wings. Typical takeoff air speeds for jetliners are in the range of 240–285 km/h (130–154 kn; 149–177 mph).