VSMUT wrote:ewt340 wrote:VSMUT wrote:
The wing is new. Developed by Antonov in Ukraine. It even developed problems during testing, when the wings started cracking prematurely in the static tests.
Ok, now that's more assuring
It was also fixed.
FWIW, western manufacturers fail these tests from time to time too. Wasn't it the 777 that initially failed the static wing tests? And the 787 had some notorious wing-cracking problems too.
The 777 passed the static load tests very well. It went to 154% limit load before failing, exceeding the 150% limit load it needed to reach. This excess structural capacity was one of the factors that allowed the 777 to develop into such a useful and widely used aircraft. By comparison, the MD-11’s wing as initially built failed prematurely (I can’t find a reference right now, but the number 141% is sticking in my mind), requiring MD to redesign the wing structure. This led to increased aircraft weight, missed range targets, cancelled orders, and eventually the demise of the programme.