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Constant amplitude testing can also be applied by simpler oscillating machines. The fatigue life of a coupon is the number of cycles it takes to break the coupon. This data can be used for creating stress-life or strain-life curves. The rate of crack growth in a coupon can also be measured, either during the test or afterward using fractography.
Near Aarsele: rear pressure bulkhead failure caused loss of tailplane: 1972-06-12 American Airlines Flight 96: Detroit, Michigan, United States MD DC-10: Design flaw 0 Cargo door locking mechanism failed causing door to separate from the aircraft and causing further damage; landed safely 1973-05-18 Aeroflot Flight 109: Chita, Soviet Union ...
March 23 – Stanford graduate and multi-talented test pilot for Cirrus Aircraft, Scott D. Anderson, was killed in a plane crash while flight-testing the Cirrus SR20 before it went on sale. The problem occurred when his plane experienced an aileron jam during experimental stress-testing.
As the Comet represented a new category of passenger aircraft, more rigorous testing was a development priority. [17] From 1947 to 1948, de Havilland conducted an extensive research and development phase, including the use of several stress test rigs at Hatfield Aerodrome for small components and large
The flight test program had a fatal crash when Army aviator Lt. "Pug" Wallace was killed. The aircraft was in a descending turn when one of the control cables under the wing came off the pulley and was wedged in the pulley bracket, locking the stick. The turn tightened until one of the wings folded up over the propeller and was chopped up.
Rickenbacker ANGB operates at the airport as a tenant of the Columbus Regional Airport Authority, sharing the facility with commercial airlines and other civilian aircraft operators. The air base is a joint military facility whose own tenant activities include the Ohio Army National Guard 's Army Aviation Support Facility #2, Navy Reserve and ...
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It consists of a bar pivoted at or near the centre, with force applied from one direction to the pivot and from the other direction to the tips. Several whippletrees may be used in series to distribute the force further, such as to simulate pressure over an area as when applying loading to test airplane wings.