Originally Posted by skylor
Just because someone once got away with speeds well above VNE without flutter and destruction, it does not necessarily mean there is a "fair amount of structural and flutter margin." It just may mean that that particular aircraft on that particular day didn't experience the stimulus needed to initiate flutter, particularly if control tap tests were not conducted at those speeds...
I'm quite familiar with all aspects of flutter, having practiced it my entire professional career. The KitPlanes article pointed out that the airplane was flown several times at 240+ MPH TAS. It was not one time. The 272 MPH speed was attained once. So there is margin above the 230 MPH TAS Vne.
In the referenced post I say, "It does give me a warm feeling that the RV-8 has structural and flutter margins above Van's published Vne.
" and "I will also still abide by Van's Vne of 230 MPH TAS ...