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| Re: March 31, 1977 - The Last R-1/9 Run In Service (1148478) | |||
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Re: March 31, 1977 - The Last R-1/9 Run In Service |
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Posted by randyo on Tue Apr 3 18:16:53 2012, in response to Re: March 31, 1977 - The Last R-1/9 Run In Service, posted by Wayne-MrSlantR40 on Mon Apr 2 22:01:03 2012. The R-9s through 32s had a "variable load" valve which reset each time the doors opened and closed which is what caused the puff of air. Starting with the R-38s, the load weighing device was changed to a "load sensor" which was always open and didn't have to reset itself hence no more puff of air when the doors closed. |
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