I know there are a couple of threads on this subject. But I still have some issues with it.
Let me try to explain my point of view.
Why does sweepback increase Mcrit? - "Because the effective chord of the wing increases in length." Ok..
I see it like this.
Let say two parcels of air hit a straight wing. One of the parcels go above the wing and the other underneath. (please correct me on the thing Im about to state next) The parcels will meet at the aft side of the wing at the same time?
So the parcel on the upper side have to travel at a higher speed to cover a longer distance in the same time. Hence we get higher dynamic V on top, and the static pressure drops and we have lift.
Still with me?
If two parcels hit a swept wing, the parcel going on top now have an even greater distance to cover?
So The parcel on top is moving even faster. Here is what I don't get. Then the swept wing would lower Mcrit?
Help would be appreciated!
