Question

why is an aeroplane unable to fly in vacuum ​

Answer 1

Answer:

If an airplane flies in space, it won't be able to suck in fresh air with which to supply its engines, resulting in loss of propulsion. The bottom line is that airplanes can't fly in space because there is no air in space. Airplanes rely on air to produce both lift and propulsion.

Explanation:

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Answer 2

Answer:

because it needs a medium to travel

but in vacuum there isn't any medium.