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8 answers

About 140mph.

Landing=125mph
Take off= 155mph

2006-09-12 00:28:16 · answer #1 · answered by Anonymous · 1 0

To get airborne, a Boeing 737 needs to reach a speed of 140 knots (its "rotate" speed or "Vr"). For landings, I usually maintain 150knots (MS-FlightSimulator). These speeds really depend on an airplane's design, weight, wing shape and size, wind/weather factors, etc.

2006-09-14 11:39:56 · answer #2 · answered by Fulani Filot 3 · 0 0

Depends on the load. About 150 to 175 miles an hour

2006-09-12 07:27:43 · answer #3 · answered by Anonymous · 1 1

The takeoff speed required varies according to factors such as air density, aircraft gross weight, and aircraft configuration (flap and/or slat position, as applicable). Air density, in turn, is affected by factors such as field elevation and air temperature. This relationship between temperature, altitude, and air density can be expressed as a density altitude, or the altitude in the International Standard Atmosphere at which the air density would be equal to the actual air density.

Pilots of large multi-engine aircraft calculate a decision speed (V1) for each takeoff that dictates action to be taken in case an engine fails. This speed is determined not only by the above factors affecting takeoff performance, but by the length of the runway and any peculiar conditions, such as obstacles off the end of the runway. Below V1, the takeoff is aborted; above V1 the pilot continues the takeoff and returns for landing. After the co-pilot calls V1, he/she will call Vr or "rotate," marking speed at which to rotate the aircraft. The aircraft usually lifts off within seconds of rotation. Then, V2 (the safe climb speed) is called. This speed must be maintained to meet performance targets for rate of climb and angle of climb.

In a single-engine or light twin-engine aircraft, the pilot calculates the length of runway required to take off and clear any obstacles, to ensure sufficient runway to use for takeoff. A safety margin can be added to provide the option to stop on the runway in case of a rejected takeoff. In most such aircraft, any engine failure results in a rejected takeoff as a matter of course, since even overrunning the end of the runway is preferable to lifting off with insufficient power to maintain flight.

If an obstacle needs to be cleared, the pilot climbs at the speed for maximum climb angle (Vx), which results in the greatest altitude gain per unit of horizontal distance travelled. If no obstacle needs to be cleared, or after an obstacle is cleared, the pilot can accelerate to the best rate of climb speed (Vy), where the aircraft will gain the most altitude in the least amount of time. Generally speaking, Vx is a lower speed than Vy, and requires a higher pitch attitude to achieve.

2006-09-12 07:29:23 · answer #4 · answered by FM 2 · 2 2

really there is no exact answer... it all depends on the factors (weight, wind, tempreature) those things can shorten the speed or require a higher speed, but in a general range of 125 to about 250mph about the speed of a nascar FYI

2006-09-15 23:17:40 · answer #5 · answered by Chad 3 · 0 0

Although there are a number of variables I've always worked on about 180mph for take off and 120mph to land. I have no idea why these figures have come into my consciousness.

2006-09-12 07:36:01 · answer #6 · answered by des10euk 2 · 2 0

It is variable but go for about 155mph for take off and just over the tonne for landing.....speed kills...remeber that.

2006-09-13 10:19:25 · answer #7 · answered by rgrahamh2o 3 · 0 0

200 303 mp[h

2006-09-12 07:32:06 · answer #8 · answered by al 3 · 0 2

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