Aviation Maintenance Terms beginning with T
Takeoff Cycles
For these cycles the loads, speeds, and distance are required to conform to either Figure 1 or Figure 2.
Taxi Cycles
The tire at rated load is required to withstand at least 8 taxi cycles on a dynamometer for a minimum speed of 40 mph and a minimum roll distance of 35,000 feet.
Test Inflation Pressure
The pressure required at an identified ambient temperature to obtain the same loaded radius against the flywheel of the dynamometer as the radius for flat surface as defined in paragraph 7c (2) of this AC. Adjustment to the test inflation pressure may not be made to compensate for increases due to temperature rise Occurring during the tests.
Testing
Tires operating at ground speeds greater than 160 mph are required to be tested on a dynamometer. Tires operating at ground speeds of 160 mph or less may, as an option, be tested on the dynamometer in accordance with paragraph 7c (7)(111).
Tire (Pneumatic)
A complex engineered structure made of rubber and cord (of textiles or steel) that provide a resilient protective enclosure for the inflating gas.
Tire pressure
Indicating System (Installed on an Aircraft) A system installed on an aircraft used for tire pressure checks.
Tire Test Load
The tire is required to be forced against the dynamometer flywheel at not less than the rated load of the tire during the entire roll distance of the test.
Transverse crack
A crack at an angle that is not parallel to the principle direction of the outer ply, breaker, or belt.
Tread
The expendable rubber-wearing surface of any pneumatic tire. It contains the groove pattern designed to facilitate water removal from the contact patch, and may, or may not, possess integral fabric materials.
Tube
A gas-tight rubber device placed inside tube-type tire casings for the purpose of containing the inflation gas. It is provided with an integral valve assembly.
Tube-Type tires
Tires requiring tubes for inflation retention.
Tubeless tires
Tires not requiring tubes. These tires are constructed with an innerliner.
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