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Started By
Message
re: British Airways 747 sets subsonic record for New York-London flight
Posted on 2/10/20 at 12:04 pm to Sentrius
Posted on 2/10/20 at 12:04 pm to Sentrius
quote:
This 747 was going 800 MPH across the Atlantic and that is hauling arse like a bat out of hell for an airliner. If you ask me, that's pushing it.
Ground speed is irrelevant (unless you are landing of course).
0
Posted on 2/10/20 at 12:04 pm to RollTide1987
I don't fly. And I def won't fly 5 hours over water.
Posted on 2/10/20 at 4:06 pm to dukke v
quote:
I don't fly. And I def won't fly 5 hours over water.
Hell I do this once a month
Posted on 2/10/20 at 5:03 pm to Sentrius
quote:
How fast can a normal airliner like the 747 can go before the structural integrity of the plane is at great risk of being compromised?
The wind speed over the wing can not reach the speed of sound or a shock wave will form and cause structural damage. Remember Bernouli - the airflow over the top of the wing speeds up a bit, so that is why they can't fly at .99 - they have to keep the airflow over the top of the wing from reaching Mach 1.0. They can get close by sweeping the wing, which effectively makes the flow now not perpendicular to the wing, reducing the effective speed a bit.
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