User:Ac001/Takeoff: Difference between revisions

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[[File:Ac001 eham takeoff1.jpeg]]
[[File:Ac001 eham takeoff1.jpeg]]
===Calculations===
===Stratergies===
* 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 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.
* 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, 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 red dot indicates the point that the aircraft is at enough speed it can safely 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 green dot is the 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.
* The purple dot is the hypothetical point where the aircraft would safely stop and well within runway limits.
** '''737'''
** '''737'''
*** this aircraft is heavy and needs some mormentum, and therfore requres more stopping distance
*** This aircraft is heavy with passengers, cargo and fuel and needs some momentum, and therefore requires more stopping distance.
*** the aircraft is just within the "margins" of runway/takeoff paramaters
*** The aircraft is just within the "margins" of runway/takeoff paramaters.
*** the throttle will be "max" until the speed is achieved
*** The throttle would be set to TOGA ie max.
** '''Beechcraft'''
** '''Beechcraft'''
*** This aircraft requires little runway to take off and is a slow takeoff speed
*** This aircraft is light and requires little runway to take off at a slow takeoff speed
*** Throttle not full on as there is a lot of runway
*** 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.
*** The aircraft could have entered the taxiway halfway down the runway, and still conducted the takeoff on a shorter runway.
** '''Bravo'''
** '''Bravo'''
*** the lighter jet aircraft is taking advantage of the runway length
*** 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.
*** The plan is accelerate slower and take off further down the runway with a '''[[Flex Temp]]''' takeoff, saving fuel, engine wear and less noise.

Revision as of 22:01, 5 June 2010

Flight College


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


Ac001 eham takeoff1.jpeg

Stratergies

  • 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, alignment in fog, etc.
  • The red dot indicates the point that the aircraft is at enough speed it can safely take off with ONLY one engine.
  • The green dot is the point where the aircraft has to take off as there is not enough runway left to stop.
  • The purple dot is the hypothetical point where the aircraft would safely stop and well within runway limits.
    • 737
      • This aircraft is heavy with passengers, cargo and fuel and needs some momentum, and therefore requires more stopping distance.
      • The aircraft is just within the "margins" of runway/takeoff paramaters.
      • The throttle would be set to TOGA ie max.
    • Beechcraft
      • This aircraft is light and requires little runway to take off at 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.
      • The plan is accelerate slower and take off further down the runway with a Flex Temp takeoff, saving fuel, engine wear and less noise.
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