
z3skybolt wrote:Airliners make great gliders,
Back in the day when we flew in quiet, non radar controlled, uncongested airspace into small airports.... the old WW-2 captains would play games with us. The deal was to close the throttles at altitude. You were then allowed only one power setting prior to touchdown. Done right we would glide at 340 kts. to 10,000ft. then transition to a 250 kt. glide until about 5 miles out. Thereafter we would typically spool up for stabilization at around 500 ft. agl. It really wasn't too difficult with a bit of experience. The really dicey flyers would glide all the way to touchdown....never adding any power. I saw it performed and did it myself on occassion. Gliding to touchdown was forbidden by the airlines's proceedure manual and after a few threatened terminations....the fun ended. Even the idle decents and stabilizing(power up ) at 500ft. ended as our airline and the industry transitioned into congested airspace at major terminals and we joined the "daisey chain" in trail ...being vectored, with altitude, direction and speed determined by ATC....usually until final approach or the outer marker.
During the mid/late 1980's ATC established many approved arrival proceedures that allowed "constant decent" at idle power all the way to final approach. When left to the pilot's discretion(beginning of decent and speed) the constant decent approaches worked just like the old days when we were "playing around." The experiment with constant decent approaches eventually ended largly as a result of congestion but also because pilots would chose different decent points and speeds resulting in improper spacing, at which time ATC would have to step in and adjust everyones flight path.
During the last several years of my career I probably got one or two chances a year to do it all on my own and glide all the way down to a short final before extending slats, flaps, gear and stabilizing power. Those rare opportunities usually occured on very late night or early morning arrivals....when there were few or any other aircraft in the area. Now everyone seems to be going to the same crowed terminal area at the same time and pilot perogitives have become very limited.
Yes....airliners are great gliders. It is fun to glide for 100 miles and land without ever touching the throttles. But is sure was always nice knowing that 125,000 lbs. of thrust was availabe with the flick of a wrist. I wouldn't want to do it dead stick for real....expecially into a river.
Have fun,![]()
Bob
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