" BTW, the image you provided was for the drop test, not a fatigue test as noted by the thread subject."
??????? That POST both a static test and a fatigue test airframes - what do you mean by ' drop test' ?
Once again- Boeing uses two ' non flyable' - early production ( line number less than 4 or 5 ) for full up static and full up fatigue tests. The static test bird has full wings ( no feathers ) and fuselage stressed- loaded to 150 percent for certification- and depending to a few percent above until failure
On the fatigue test bird ( non flyable ) the complete body and wing unit are flexed and pressurized simulating typical flight profiles for tens of thousands of cycles.
As to design philosophy- you may be correct- but what does that have to do with subject of thread. ???
Please provide link to image you calim was a ' drop test '
The first image Of the first lInk was labeled as loading the fatigue test bird- one can clearly see the multiplehoses used for rapid pressurization and depressurization.
" "Unlike static tests, where loads are applied to the airplane structure to simulate both normal operation and extreme flight conditions, fatigue testing is a much longer process that simulates up to three times the number of flight cycles an airplane is likely to experience during a lifetime of service," said Scott Fancher, 787 vice president and general manager, Commercial Airplanes. "This testing is instrumental in confirming the longevity of the airplane."
Thank you
Last edited by CONSO; 3rd Nov 2016 at 01:49.
Reason: correcting image lables