Re: Gear up on go-around?

From: (Dennis Chamberlin)
Organization: Tektronix, Inc., Beaverton,  OR.
Date:         26 Feb 93 04:43:35 PST
References:   1
View raw article
  or MIME structure

In article <airliners.1993.189@ohare.Chicago.COM> (Clemens Emmanuel Tillier) writes:
>Is it necessary to raise the landing gear when aborting an approach and going
>around? Why or why not?

Standard procedures call for gear up very early in the routine, often 
immediately after power is added. Whether it's absolutely necessary 
or not depends on the situation, but the procedures assume maximum
climb performance is immediately required. They generally set things for
maximum power, maximum lift, and minimum parasite drag. The gear is a 
big drag item. 

There are some aircraft that put the gear-up operation a bit later in
the sequence. The reason is that with some systems the gear in-transit
actually generates more drag than the gear down does.

It is true that flaps & leading edge slats also generate some drag. 
But this drag is tolerated since at go-around settings they produce
a great deal more additional lift than they do added drag. The net
result is a steeper climb angle.