Tire pressure equalization and inflator
An apparatus and method to equalize the pressure in multiple tires supported by a single axle or strut of an airplane is shown. A control block connects the pressurized gas to a distribution block and meter. From the distribution block high pressure lines and no-loss chuck valves connect the pressurized gas to the multiple tires. Steps to be followed as programmed in the meter include startup, testing, calibration, setup and finalize. A permanent record of the steps in equalizing tire pressures is maintained.
1. A method of inflating and equalizing pressure on multiple tires suspended from a single strut of an aircraft using a inflation/equalization device, said inflation and equalization occurring from a source of pressurized gas, said method comprising the following steps:
starting said inflation/equalization device by applying power and setting pressure, said starting including determining if said inflation/equalization device (1) has a current certification, (2) user is registered for the device and (3) has correct Zulu date and time;
testing said inflation/equalization device by (1) checking battery level, (2) checking display and (3) checking sensors;
calculating said inflation/equalization device including verifying (1) said pressurized gas is unlocked, (2) chucks are unlocked and (3) pressure is released;
setting up said inflation/equalization device by (1) connecting said chucks to valve stems of said multiple tires, (2) opening said chucks and (3) connecting said pressurized gas to a pressure control block;
finalizing said inflating and equalizing by adjusting pressure and allowing said pressure to equalize in said multiple tires;
recording each preceding step;
and terminating said inflating and equalizing if any preceding step fails.
2. The method of inflating and equalizing pressure in multiple tires suspended from a single strut of an aircraft as given in claim 1 wherein said pressurized gas is nitrogen.
3. The method of inflating and equalizing pressure in multiple tires suspended from a single strut of an aircraft as given in claim 2 wherein in said finalizing step true PSI is recorded.
4. The method of inflating and equalizing pressure in multiple tires suspended from a single strut of an aircraft as given in claim 3 wherein after said finalizing step disconnecting said chucks, moving to second multiple tires of a second strut and repeating said setting up step and said finalizing step.
5. The method of inflating and equalizing pressure in multiple tires suspended from a single strut of an aircraft as given in claim 1 wherein said finalizing step incudes disconnecting said chucks and monitoring for pressure change and if pressure change is greater than ±0.025%, repeat said finalizing step at least once.
6. The method of inflating and equalizing pressure in multiple tires suspended from a single strut of an aircraft as given in claim 5 wherein said setting up step includes an initial sub-step of confirming zero pressure and releasing any internal pressure.
7. The method of inflating and equalizing pressure in multiple tires suspended from a single strut of an aircraft as given in claim 6 wherein said setting up step includes recording which of said multiple tires of said struts is being pressurized and/or equalized.