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Old 31st August 2008 | 15:10
  #35 (permalink)  
misd-agin
 
Joined: Jan 2006
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Join Date: May 2007
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Good one for the Sim.

both engine flameout and gliding to an airport 2 MN for each 1000 ft. And you`ll have to lower the gear around 2000ft.

Add 2500ft for an 180º turn (down wind to final). 1000ft for a 90º turn



Actually modern jets have glide ratios around 18:1, which equates to 3 n.m. per 1000' of altitude. 767, designed about 30 yrs ago, is 17.9:1.

TAS divided by sink rate/100 = glide ratio. Eg, 260 KTAS/1300 FPM = 20.0 (or the cheating way, 260/13 = 20)

Hmmm, have to figure out what the 757 winglet glides at.

Manuals provide the best gllide speed (L/D). Check out the "dual engine flameout" driftdown speeds. Typically (last 3 a/c I've flown) it's very close to Vref 30 + 95 kts.
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