looks like a pretty old wing design - no wingtips/winglets and plenty of vortex generators to re-energise the flow. Oh, and you are right, it is a really interesting thing to study, where did you study it?
the fact that they're perfectly vertical on screen, which means they're at a completely illogical angle on the wings makes me think it's more likely an imperfection in the 757's windows *such as a small rim in the glass perhaps, no clue why they would do that but whatever* than an actual shockwave that is perfectly upright in the camera's view, yet at an angle that makes no sense at all to the wing
either that, or im seeing the wrong "shockwave" (all this not meaning they couldn't exist)
@col737zc Yes, I am aware of this. The airflow at the shockwave has a local mach of 1, even though the free stream airflow is considerably less (probably 0.75-0.85 for the 57). The airflow from almost the leading edge to the visible shockwave is supersonic.
looks like a pretty old wing design - no wingtips/winglets and plenty of vortex generators to re-energise the flow. Oh, and you are right, it is a really interesting thing to study, where did you study it?
IntrinsicHyp 2 months ago
the fact that they're perfectly vertical on screen, which means they're at a completely illogical angle on the wings makes me think it's more likely an imperfection in the 757's windows *such as a small rim in the glass perhaps, no clue why they would do that but whatever* than an actual shockwave that is perfectly upright in the camera's view, yet at an angle that makes no sense at all to the wing
either that, or im seeing the wrong "shockwave" (all this not meaning they couldn't exist)
siriusblack9999 4 months ago
Called Wing de-icing son.
fannypenis 10 months ago
@fannypenis No, it's not.
kurtjahr 10 months ago
@kurtjahr Yea, I've just realised that after investigation.
fannypenis 10 months ago
@fannypenis No problem! I think the fluid dynamics of transonic airflow is more interesting than headed leading edges, anyway :)
kurtjahr 10 months ago
It's not breacking sound yet, it's in transonic flight Mach 1 would be when the normal shocks are at the trailing edge
col737zc 1 year ago
@col737zc Yes, I am aware of this. The airflow at the shockwave has a local mach of 1, even though the free stream airflow is considerably less (probably 0.75-0.85 for the 57). The airflow from almost the leading edge to the visible shockwave is supersonic.
kurtjahr 1 year ago
@col737zc when the air passes over the top of the wing, it accelerates and goes sonic/supersonic
IntrinsicHyp 2 months ago
you should name it something better like what breaking sound looks like
TheBeatlesTime 1 year ago
@TheBeatlesTime not a bad idea, I appreciate the feedback. Thanks for watching!
kurtjahr 1 year ago