Wheelbarrowing Part 2
Aircraft Stopping hangar Talk not on cvr/fdr
1. Reverted rubber hydroplaning.........
2. Dynamic Hydroplaning.......................
3. Viscous hydroplaning ...........
a. Taken from FAA.Gov.
.................." Is due to the viscous properties of water. A thin
film of fluid no more than one thousandth of an inch in depth
is all that is needed. The tire cannot penetrate the fluid and
the tire rolls on top of the film. This can occur at a much lower
speed than dynamic hydroplane, but requires a smooth or
smooth acting surface such as asphalt or a touchdown
area coated with the accumulated rubber of past landings…or oils
from other sources e.g. Asphalt, BE 18’s, etc. (My Input). Such a
a surface can have the same friction coefficient as wet ice."............
4. Matching Tires for dual Wheel Installation
5. Due to a dynamic hysteresis of toe in to toe out. There is an unpredictable issue of hydroplaning that cannot be planned on or designed for.
6. Tire alignment
a. Tire alignment, mechanical/angular difference of trucks, tow-in, tow out, Camber,
b. Tire alignment e.g. Crosswind, crab/yaw, roll axis, pitch, castor.
7. Tire pressure variation
a. Including energy from landing
b. Proper or actual tire inflation
c. Some newer aircraft have pressure indication e.g. 777
d. Tire Failuire
e. Tire missing
8. Wheel barrowing
The combination of excessive forward pressure on the control column during the ground run and high speed can cause the main wheels of some nosewheel aircraft to leave the ground, allowing the aircraft to run along on its nosewheel only. The forward pressure has only to lift tires from effective braking or WOW (weight on wheels) deactivation.
9. Performance Charts/Braking action
10. Antiskid releases per tire
11. FTFT
12. Unlimited retreads
13. Unbalanced including slip tolerance
14. Limitations Mel
a. Tire tread
b. Brake wear
15. Tire temps.
16. Debris
17. Engineered defects (back to alignment problems)
18. Runway Slope/Drainage design and natural settling/puddles/snow/KLGA etc.
19. There is more to list. Above is Tire related.
20. Remember the Braking Action Truck/Vehicle is Calibrated.
We all can learn.