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Tire pressure cold check system

  • US 10,449,812 B2
  • Filed: 03/23/2015
  • Issued: 10/22/2019
  • Est. Priority Date: 03/21/2014
  • Status: Active Grant
First Claim
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1. A method for opportunistically detecting and recording tire cold check condition (“

  • CCC”

    ) pressure and temperature for an aircraft wheel assembly of an aircraft, wherein the aircraft is configured to monitor a ground speed of the aircraft and to detect if the aircraft is on the ground, and further wherein the wheel assembly includes a wheel, a tire, a wheel temperature sensor, and a tire air pressure sensor, the method comprising;

    while the aircraft is on the ground;

    i) periodically detecting a tire air pressure and a corresponding wheel temperature and storing the detected air pressure and wheel temperature with a detection time stamp; and

    ii) calculating a corresponding running average air pressure and a corresponding running average wheel temperature of a predetermined number of the periodically detected air pressures and wheel temperatures, and storing the running average air pressure and the running average wheel temperature with a time stamp;

    for each detected tire air pressure and corresponding wheel temperature, if the aircraft has been on the ground and the monitored ground speed has not exceeded a predetermined maximum speed for a predetermined cold check delay period, storing the detected tire air pressure and the corresponding wheel temperature as a CCC pressure and temperature; and

    for each detected tire air pressure and corresponding wheel temperature, as soon as the corresponding calculated running average temperature is within a predetermined number of degrees of an ambient temperature, storing the detected tire air pressure and the corresponding wheel temperature as a CCC pressure and temperature.

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