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.
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.