"John R Weiss" wrote:
"WaltBJ" wrote:

FWIW the L1011 had a neat mode of spoiler operation - with the
trailing edge flaps in land (33 degrees) position the wing spoilers
were positioned up 8 degrees. Slight movement of the yoke fore or aft
from the trimmed position raised or lowered the spoilers effecting a
useful change in lift with minimal change in AOA. Made it very easy to
stay on a glideslope or maintain a set rate of descent.

Also done in the Navy F-14 and S-3, with minor variations.

Also done in many gliders, though manually, as a matter of course in the landing
pattern...

In gliders, I raise the spoilers (about halfway) while still on
downwind and leave them partially up (occassionally raising 'em
all the way if needed) all the way down to the flare.

Another commonly used method to stay on the glideslope or maintain
a set rate of descent that hasn't been mentioned is via prop pitch
(e.g: decrease pitch if drifting above glideslope, increase pitch if
drifting below glideslope).