MS14168A(AS)
9.68 feet/sec/sec between 132 and 0 mph. The tire load shall be increased linearly with time to 3,000 pounds in 1.5 seconds after landing, increased linearly with time to 3,600 pounds in 8.5 seconds, increased linearly to 5,900 pounds in 3.5 seconds, and maintained at 5,900 pounds until the tire has come to a stop. Immediately following the landing cycle, taxi the tire on the flywheel for 10,000 feet under
5,500 pounds load at 30 mph.
TEST D High speed landing - taxi. The tire shall be landed against a flywheel rotating at a peripheral speed of 218 mph. The flywheel speed shall then be decreased until a roll distance of approximately 7,995 feet has been covered. The average deceleration rate shall be 3.26 feet/sec/sec between 218 and 198 mph and 8.0 feet/sec/sec between 198 and 0 mph. The tire load shall be increased linearly with time to 2,000 pounds in 1.5 seconds after landing, maintained at 2000 pounds for 7 seconds, increased linearly to 4,200 pounds in 3.5 seconds, then decreased linearly with time to 3,400 pounds at 45 seconds after the start of the landing roll. Immediately following the landing cycle, taxi the tire on the flywheel for 10,000
feet under 3,400 pounds load at 30 mph.
TEST E Rejected takeoff. The tire shall be taxied on the flywheel at 30 mph for 10,000 feet with 6,500 pounds load. Immediately following the taxi roll, the tire shall be loaded and its speed increased linearly as follows:
TIME (SEC) |
LOAD (LB) |
SPEED (MPH) |
DISTANCE (FT) |
0 |
6500 |
0 |
0 |
13.7 |
5200 |
132 |
1329 |
14.0 |
4300 |
135 |
1388 |
20.2 |
2250 |
184 |
2839 |
23.8 |
500 |
206 |
3869 |
23.9 |
0 |
207 |
3899 |
25.0 |
2,400 |
225 |
4,248 |
61.0 |
9,400 |
0 |
10,188 |
Immediately after the tire is stopped, continue tire taxi on the flywheel at 30 mph for 10,000 feet with 6,500 pounds vertical load.
TEST F Inboard camber taxi. The tire shall be taxied against a flywheel rotating at a peripheral speed of 30 mph with 6,850 pounds load for a distance of 2,500 feet with the plane of the tire inclined inboard at an angle of 15 degrees.
TEST G Outboard camber taxi. Perform the test F spectrum with the plane of the tire 15 degrees outboard.
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