Anonymous

Mars' atmosphere has no oxygen, so jet engines don't work. Anyway a jet liner would have to travel so fast is would essentially just be in orbit.

Anonymous

It's not a question of velocity but of the size of the aerofoil. One design for a Martian aircraft involved a helicopter rotor.

Anonymous

Mars has no atmosphere at all anymore.

Anonymous

It wouldn't have to fly fast, it could just have larger wings. On Mars, this could be feasible, since the lower surface gravity (compared to Earth) would mean larger structures could be built without worrying about the effects of their self weight.

Anonymous

It's not so much the speed, but the wing size to provide lift. And you can play around with the numbers the find out yourself. http://www.ppl-flight-training.com/lift-...

Anonymous

About 20 times the speed of Sound And with very big wings