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ARGPILOT

26th Jun 2007 19:16

another calculation?

thanks to everyone for the other

i have another question

an airplane at FL 290 is required to commence descent when 50 nm from a VOR and to corss taht VOR at FL 80, its GS during the descent is 271kts, what is the minimum rate of descent requiered?

thanks

hetfield

26th Jun 2007 19:20

21000/11

about 1900ft/min

ARGPILOT

26th Jun 2007 20:09

where the 11 comes from?

Rainboe

26th Jun 2007 20:17

Doh! 11 minutes. But the groundspeed will not remain constant in real life, so such calculations are not accurate. But they're a guide.

Chally604

26th Jun 2007 20:21

271NMH/60Min=4,51NM per Min

50NM/4,51NM per Min= 11 minutes time for 21000 feet

21000/11=1900

blackmail

26th Jun 2007 21:05

rate of descent

hello every one,
slope = 7 % x 271kt gs = 1897 ft/min.
bm:hmm:

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