why lift coefficient decreases at supersonic flow?
Oct 7, 2023 · Drag obviously does exist at subsonic speed and is mainly due to the fluid's viscosity but as a first approximation we can simply ignore it and live with the fact that the …
aerodynamics - How do transonic or supersonic speeds affect lift ...
How do supersonic or transonic speeds affect lift distribution over the whole wing? How does the root's changing pressure distribution compare to that at the tip?
Can an airplane propeller become supersonic? - Aviation Stack …
Oct 31, 2023 · 6 Yes the blade tips can go supersonic at redline rpm if the blades are long enough, the tip speed simply being a function of those two variables, along with the right …
What is a shockwave, and how does it form?
Oct 23, 2023 · AT the speed of sound, the displacement wave cannot propagate forward and instead it piles up into a thin layer right at the point of the cone. Within that layer, pressure and …
Why do sonic booms happen at speeds significantly faster than …
Mar 24, 2025 · The problem with this, is that it describes a phenomenon that would make a very large bang at exactly the speed of sound. But that would not make any significantly different …
supersonic - How come sonic booms only occur once at the speed …
May 31, 2015 · Fighter aircraft today are capable of flying several times the speed of sound. Why is it that the sonic boom only occurs at the moment the plane crosses Mach 1?
aircraft design - Do helicopter rotor tips regularly go supersonic ...
Jul 17, 2015 · This supersonic condition is reached sooner in flight than in hover. When the blade is moving "forward", the airspeed is added to the rotational speed of the forward moving blade …
Why does drag coefficient decrease with Mach number in the …
Jul 23, 2020 · With speed well above Mach 1, the change in density is large enough to let the aircraft pass. Only around Mach 1 is the contraction of the streamlines low because the …
Why do shockwaves progressively move aft as speed increses?
Apr 9, 2020 · With a higher flight velocity (still subsonic), the supersonic pocket on the upper side of the wing starts earlier and takes longer until it collapses into the shock. That is quite normal, …
Why can't jet engines operate with supersonic air and how do they …
Oct 12, 2014 · Note that the high circumferential speed of a large fan blade will still mean that its tips work at around Mach 1.5, but the subsequent compressor stages will operate in subsonic …