Question for Ray Stark regarding tire pressures:
If a tire is pressurized to 100 psi with dry air at sea level where the atmospheric pressure is 14.7 psig, then placed in a vacuum chamber and the chamber evacuated to 0.0 psig, what would be the change in tire pressure be if the temperature in the vacuum chamber was held constant at standard day conditions?
If the test was repeated with the tire pressurized with dry nitrogen rather than dry air, what would be the change in tire pressure?
If both tests were repeated with a temperature reduction near to -65 degrees F at the 0.0 psig pressure, what would be the resultant tire pressures?
Would it be possible for the tire pressures in either case to be greater than 100 psig plus 14.7 psig? If so, how? What tire pressure would explode the typical aircraft tire if it had been correctly pressurized at sea level?
Thanks in advance
Jon Hehman
Woodstock, Georgia
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