Tire pressure cold check system
First Claim
Patent Images
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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Abstract
Cold check gas pressure readings for the landing gear tires of an aircraft are obtained automatically during normal operation of the aircraft. The automated system (S1, e.g.) includes monitoring aircraft data to determine that the aircraft is at rest on the ground (32,345,36), and electronically monitoring the tire pressure (24). When predetermined cold check conditions have been met; the tire pressure values are automatically stored with a timestamp (38) for later access by a user.
15 Citations
20 Claims
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- CCC”
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11. A system for opportunistically detecting and recording tire cold check condition (“
- CCC”
) pressure and temperature for a wheel assembly for an aircraft comprising a wheel and a tire mounted on the wheel, wherein the aircraft is configured to monitor a ground speed of the aircraft and to detect if the aircraft is on the ground, the system comprising;a sensor assembly comprising a temperature sensor and a pressure sensor mounted in a tire inflation valve wheel rim port of the wheel, wherein; 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 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 corresponding 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. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
- CCC”
Specification