>One of the final tests still on the agenda for the 747-8 test pilots is a maximum braking tests. The pilots will abort a take off at approximately 184 knots (212 mph) and come to a stop by standing on the brakes without using thrust reverse devices. The brakes must be at their maximum allowable wear at the time of the test. The brakes are 'pre-worn' a bit in the shop, but most of the work comes down to the pilots to get them ready for the big day.
>"We do repeated, abusive landings to wear down the brakes," says test pilot Mark Feuerstein.
They slow down from over two hundred miles an hour by standing on the brakes.
Of course -- I don't think there's too many vehicle's on land with the momentum of a 747 at 320km/h. And definately not many that can compare on a momentum:surface friction ratio.
>One of the final tests still on the agenda for the 747-8 test pilots is a maximum braking tests. The pilots will abort a take off at approximately 184 knots (212 mph) and come to a stop by standing on the brakes without using thrust reverse devices. The brakes must be at their maximum allowable wear at the time of the test. The brakes are 'pre-worn' a bit in the shop, but most of the work comes down to the pilots to get them ready for the big day. >"We do repeated, abusive landings to wear down the brakes," says test pilot Mark Feuerstein.
They slow down from over two hundred miles an hour by standing on the brakes.