Re: unpowered glide ratios

From: (Robert Dorsett)
Organization: Netcom Online Communications Services (408-241-9760 login: guest)
Date:         14 Oct 94 02:23:34 
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In article <airliners.1994.1593@ohare.Chicago.COM> (Terrell D. Drinkard) writes:
>>For some Boeing planes, or others, what are typical,
>>unpowered, sustainable glide ratios?  
>Just in general, one can assume a glide ratio in excess of 20 to 1.
>The 737 is around 22 to 1, depending on the exact model and configuration.
>This is assuming the engines are at idle, or at least windmilling.  It does
>get worse if they are not turning at all.

A friend's training session ended early in an L-1011 simulator, so they er,
"experimented."  Basically, they shut down their engines when over the final
approach fix, in the landing configuration, on speed.

They made the runway, setting flaps and flying by the numbers.  Assuming
a 3 degree glide slope, this would give a 19:1 glide ratio.

Robert Dorsett                         Moderator, sci.aeronautics.simulation