User:Ac001/Takeoff

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Take Off

The map below shows three classes of aircraft waiting to take off at EHAM Amsterdam.

• Top left on 36L is a 737 Airliner (helijah)
  • heavy aircraft for international 10 hr flight
  • takeoff speed is 140 knots into headwind
• Bottom left on 06 is a Beechcraft twin prop (trennor)
  • nimble small regional aircraft for 1 hour flight
  • takeoff speed is 90 knots into a slight side wind
• Bottom right on 36R is Citation Bravo twin jet (ac001)
  • small jet for euro hopping on 3 hour flight
  • takeoff speed is 120 knots

Calculations

• Each pilot has calculated the speed required to actually take off based on aircraft performance, runway length, weight, air pressure and many, many other factors some featured more below.
• Each pilot has shortened the runway by a "safety margin" (yellow lines) that has been deducted from the runway length, a "gut feel" for headwind, visibility of alignment in fog, etc.
• the red dot indicates the point that the aircraft is at enough speed it can take off with ONLY one engine
• the green dot is the takeoff point where the aircraft has to take off as there is not enough runway left to stop
• the purple dot is the approx point where the aircraft would safely brake to a stop.
  • 737
    • this aircraft is heavy and needs some mormentum, and therfore requres more stopping distance
    • the aircraft is just within the "margins" of runway/takeoff paramaters
    • the throttle will be "max" until the speed is achieved
  • Beechcraft
    • This aircraft requires little runway to take off and is a slow takeoff speed
    • Throttle not full on as there is a lot of runway
    • The aircraft could have entered the taxiway halfway down the runway, and still conducted the takeoff on a shorter runway.
  • Bravo
    • the lighter jet aircraft is taking advantage of the runway length
    • its plan is accelerate slower and take off further down the runway with a Flex Temp takeoff.