a quik physics question....?

Question

do u know how long it takes for an airbus A380 (or any commercial aeroplane for that matter) to accelerate to its maximum cruising speed? do not include the time taken by the plane while taxying because that can vary. i just need the approximate time taken to accelerate to maximum speed.
i need to use it in the thrust equation for some physics homework.
pls give me an accurate answer....i've been searching the web for a long time but maybe i'm not looking in the right places....

Answer 1

Here's the problem: Vcmax can only be obtained at ~30,000 ft altitude. On a typical flight, the plane will takeoff with the maximum continuous thrust while maintaining a speed considerably below Vcmax. This gives a climb of ~2000 ft/min. When the desired altitude is reached, the nose is lowered and to stop the climb, and the speed increases to Vcmax. Or whatever speed is desired. The climb takes 15-20 minutes with no traffic delays, AND there's an FAA speed limit of 250 knots below 10,000 ft.

I realize a lot of this doesn't concern your physics problem. If you want to just consider taking off, then leveling off at low altitude with full thrust, the speed would probably peak about 2 min after the begining of the takeoff roll. This is not data normally presented in any aircraft operations manual, which would explain your lack of luck on the web.

Suggestion: post the actual homework ? here....

Answer 2

google knows. i, however, do not.