Shocking values ​​measured with the (un)loading of an aircraft bag



I took my travel bag with me for my trip to Marseille (France). I could not resist to place a GPS system and a Lansmont Saver inside my bag that logs the shocks and vibrations during my trip. After I arrived at Schiphol, I delivered my travel bag to the check-in desk.

Two minutes after checking in my bag, a heavy shock of more than 32g was recorded that lasted more than 27 milliseconds. To compare this with a drop height, this had to be a least a drop from one meter. Within half an hour again a shock of 26g was measured, but with a short time of 4ms. It seemed like my bag ended up on a vibrating table, because rms vibration levels of 0.6g (constant acceleration peaks of 1.8 and 3g) were measured.

No shocking discoveries were made during take-off, flying and landing. All these acceleration values were very low.

On the return trip, my travel bag was treated even more extreme. I saw an employee from the airport throwing my travel bag on a cart with some aggression. Shocks of 53g with a duration of 7ms were measured.

In summary:

  • The handling action of travel bags and suitcases are more extreme than expected.
  • A 53g peak acceleration was measured with a nominal time of 7ms. In total, there have been 13 strong impacts (acceleration between 20g - 53g).
  • The vibrations of travel bags and suitcases are much lower than expected in an airplane.  The maximum value upper envelope is 0.58 g rms (average 0.07 g rms). In the ASTM standard the minimum value is 0.74 g rms The vibration levels of vehicles are many times higher than an aircraft profile.

 This news item was written by Michel Magendans

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