An airplane tire will hydroplane at a speed in knots equal to nine times the square root of the tire pressure in PSI. The real trick is undoing the little cap on the tire valve and reading the tire gauge while turning left base.
Not an airplane fact, but when I took classes for driving ambulances (CEVO), they always cited 35mph as the speed where an ambulance can hydroplane on some amount of water that I cannot recall. Something with surface tension. I’m not a scientist.
In aviation circles they always called it “standing water” here meaning “the surface is liquid not a wet solid” Airplane tires also have very simple or no tread at all, so that isn’t a factor. There’s also the fact that during the landing roll, the airplane is partially or even mostly supporting its weight on its wings still; so at any significant airspeed you don’t have 100% of the ship’s weight on the wheels.
An airplane tire will hydroplane at a speed in knots equal to nine times the square root of the tire pressure in PSI. The real trick is undoing the little cap on the tire valve and reading the tire gauge while turning left base.
Not an airplane fact, but when I took classes for driving ambulances (CEVO), they always cited 35mph as the speed where an ambulance can hydroplane on some amount of water that I cannot recall. Something with surface tension. I’m not a scientist.
In aviation circles they always called it “standing water” here meaning “the surface is liquid not a wet solid” Airplane tires also have very simple or no tread at all, so that isn’t a factor. There’s also the fact that during the landing roll, the airplane is partially or even mostly supporting its weight on its wings still; so at any significant airspeed you don’t have 100% of the ship’s weight on the wheels.