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Rate Of Ascent, Angle Of Climb Questions  
User currently offlineTranStar From United States of America, joined Jul 1999, 530 posts, RR: 0
Posted (16 years 8 months 3 weeks 4 hours ago) and read 14063 times:

When a jet aircraft takes off, what is the typical rate of descent achieved upon takeoff and what angle of climb is achieved (15 degrees, 10 degrees, ?)

When descending, how fast (feet per minute) and what angle is comfortable for passengers and typical for commercial aircraft?

1 replies: All unread, jump to last
User currently offlineKaitak From Ireland, joined Aug 1999, 13265 posts, RR: 34
Reply 1, posted (16 years 8 months 3 weeks 1 hour ago) and read 14041 times:

First climbouts . . . it can vary very much. The heavier the aircraft, the lower the climb angle. A light 747 can climb at about 15 degrees, but with a heavy load, the aircraft might only reach 11 degrees and should an aircraft lose an engine on climbout, the angle would decrease even further.
The 757 (corrections?) has the steepest climb rate; it can reach 17-18 degrees (again depending on load). On go arounds, the angles can be particularly steep as the aircraft - being on their final approaches can be lighter. In 1991, an Interflug crew (the old East German airline) was doing a go around at Moscow in an A310, then very new to them. The aircraft's climbout after G/A was so steep that the pilot tried to intervene. Having flown Ilyushins, he must have had the shock of his life (nothing compared to the shock of what followed, but that's another story!)

On descent, aircraft can go down at about 6,000 fpm, but that is not pleasant. Generally, 2-3,000 fpm is average. On approach, the descent rate is about five times the speed - 700 fpm is about the average.

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