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Need Help on Landing Gear Calculations
"Dick" wrote Just thinking out loud here but thought the +/- 6 G was for airframe, etc in flight while the landing gear get subjected to considerably less. Vaguely remembering the FAA requirements as 3 times static wheel load dropped 19". I'm thinking 300# on one mains times 3. True, the G rating for an airplane is for the airframe, but how many G's would a drop from 19" develop? I don't have the slightest idea. I'm not a wiz on math problems. If a drop from 19" does not stress the plane to more than 3 G's, that would be a wimpy test, in my opinion. A plane dropping in on a blown landing hits with a real whack. How about it, you out there with G meters? How high of a reading have you seen on a really blown landing? It should not be that tough, for a wiz at math to figure out how hard of a whack a 19" drop generates. Take the speed generated, and divide that result out into the amount of suspension travel, I would think. The whole key in the difference is that the G rating for an airframe is generated and suspended by the wings, and the G rating for the landing gear is generated by changing velocity into a stop by the landing gear. -- Jim in NC |
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