Exceeding Vne
Hello all,
I’m trying to learn more about the background of Vne in helicopters. The only reasons I can find cited for observing Vne are retreating blade stall and compressibility (apart from the fact that it is an aircraft limitation).
It seems to be a fairly common belief among many I’ve flown with that Vne exists only to avoid the regime of flight where you may enter retreating blade stall. I’ve done some research and found references to mast bending, flight test cost, and aircraft-specific aerodynamic tendencies such as safe autorotation speeds. However, I can’t find anything concrete, or anything explaining these ideas in more detail.
Can anyone give me an idea, or point me in the right direction of where to find, potential reasons for Vne being defined where it is? This is mostly a curiosity question for me - but it’s also nice to have some concrete examples when “we exceeded Vne and nothing happened” comes up in conversation.
Thanks for the help!