You say at 2:36 that they needed to find a way to decrease the critical mach number. This is a mistake. You want to increase the critical mach number so you can go as fast as possible without the airflow reaching mach 1 and thus causing shockwaves.
Worth giving it a like bro! Wonderful very clearly explained! And yeah I appreciate your dedication that you took nearly 30 minutes to make this 5 minute video. (I could see the time from the clock in the background) Kudos! Great work! ---- With much love from India! 🇮🇳❤️
Swept wings don't just increase Mcrit and decrease wave drag but the fact that there's spanwise flow at all decreases air resistance. Swept wings allow for some of the air to run along side the wings (the previously mention spanwise flow) much like "sliding down a ramp instead of running into a wall" as I've heard it said.
@@AviationAustin Yes, it's a type of drag but air resistance is usually used to refer to form drag even though it can be used to refer to drag in general regardless of where this drag comes from.
Wonderful video! However, I was hoping to learn a bit more about the stability effect of sweptback wings. Do you have any content about how/why it improves the directional + lateral stability?
curiously, every little boy who has thrown a paper airplane into the air (and I'm talking even before the Wrights) probably had a swept wing example he had folded into semblance. Were there swept wing paper airplanes in the 19th-century on back?
Nice content. Hopefully we can get an explanation of why the Concorde or F-16 didn't use normal swept wings, instead of the delta wing. :) By the way, the outro is: Eveningland - Rev [Genre = Prog. House]. That is my favorite style of electronic music.
It's a great song. I'm not sure what you mean of a normal swept wing. Are you asking why it's a delta wing versus a normal commercial aircraft being the long slender shape?
My video Why Wings are Shaped like this will probably shed some light on that question. But just broadly, it has to do with Aspect ratio and drag. The larger the aspect ratio (or the skinnier and longer) the wing is the less maneuverable the aircraft. So the F-16 need to have a short fat wing to help it be maneuverable. As for something like the Concord it's about drag. The reason most commercial planes need a long skinny wings is because they need to generate a lot of lift and don't need to be maneuverable. The Concord didn't need to generate as much lift because it had some much thrust to compensate for the shorter wings. If it had longer wings it would cause too much drag. This reduced lift ended up being a problem on landing when they had to slow down they had to stay pitched up to stay in the air. That's why it had to have a droop nose.
@@AviationAustin Hmm. So someone needs to design a supersonic wing that has desirable qualities at both low speeds (high lift) and at high speeds (less drag). Like a wing that has a 55° sweep near the roots a third of the way of the length, and a 35° sweep near the tips.
They have. The F-14 had a variable sweep wing that went from a conventional swept wing tona Delta wing. But it was discontinued. But more accurately what you're describing is called a compound Delta. So the thought has been had it just hasn't been used too much. Look up the F-16XL
