What is the average take of speed of a Boeing 767?
Answers:
It can vary widely depending on weight, wind speed and the pilot's preference. Most jets of that size reach V1 at about 160-180mph (140-160 knots) indicated airspeed, as far as I know.
The actual rotation speed of the 767 is 155 (178 mph) KTS. The A320 is speced from Airbus at 153 KTS (must be metric conversion). "Average" is hard to tell. The plane starts lifting +/- 5% of the rated speed depending on how heavy you are (and air density).
Yes, the rotation speed does vary between 150-180 miles per hour.
The guys above are correct; T/O or rotation speed (Vr) changes with A/C weight and density altitude.
Although V speeds are not posted, go to www.BOEING.com for other details.
The rotation speed for the 767 (or any plane for that matter) is totally dependant on density altitude, weight conditions, engine performance, and various other parameters. For almost all standard situations, the above numbers are all in the right area.
About 800 km per hour.
depends if you have a lot of fatties on board or not. Its completly dependant on weight, aptmospheric conditions etc. V1 achieved at approx 160 - 180 miles per hour.or there abouts
There are four basic forces involved in all stages of flight and regardless of the aircraft's size or engine type. Weight (of the aircraft), Lift (provided by the wing surfaces), Drag (air resistance of the whole airframe) & Thrust (provided by the engine(s)). In order for flight to take place, thrust must be greater than drag and lift must be greater than weight.
Thrust provides the forward motion required to accelerate the aircraft to a point where the wing starts to provide more lift than the actual aircraft physically weighs. When carrying a full load, the weight of the passengers and their luggage, is usually constant however the weight of the fuel carried varies enormously depending upon the planned flight length. A typically specified 767-300ER will carry 46,000kgs of fuel (enough to fly from Gatwick to Cancun for example) bringing the total aircraft take-off weight to around 160,000kgs.
On a dry summer day with a typical UK airfield elevation of appox 60 metres above mean sea level, an airspeed of 190mph (165kts) should do the trick i.e. the air needs to be passing over the wing surfaces at that speed. Bear in mind that this is the speed required through the air and not necessarily the speed you will be travelling over the tarmac. If you are taking off into a 20mph headwind then your ground speed would only need to be 170mph. (170 + 20 = 190 and up you go!) Conversely, with a tail wind of 20mph, your ground speed would need to be 210mph. That’s why we take off into the wind.
The heavier the aircraft, the longer the runway needs to be as it will take longer to accelerate up to the required speed. Actual rotation (take off) speed and runway length required are all carefully calculated before the engines are started. The final speed required is influenced by many factors including barometric air pressure, relative humidity, air temperature, wind speed/direction and airframe weight amongst other things.
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