When at airport you may be aware that the airplane is not allowed to move back from the discharge door without assistance. The jet engine only allows the aircraft to move forward. Hence the steering vehicle is used. As a result many planes spend time waiting to be pulled before they can be released.
The WheelTug electric wheel produced by Striling Dynamics was developed for the Boeing 737 aircraft. With this electric wheel, the world's most popular aircraft could move with its own power. This can reduce the average time waiting for about 13 minutes. The power source for WheelTug is from the Auxiliary power unit (APU) system at the stern of the ship. Currently WheelTug is still in the test to ensure it is safe to use.
Source: WheelTug
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