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In this video in 3 minutes you will have endured 3 takes offs and 3
landings. http://www.youtube.com/watch?v=XCYjZ-XkPTk Short field relative to pilot experiences I guess. Figured to go to Newton and work on a 3000 runway with large trees on the arrival end. Only thing I can think that triggered the stall horn on short final for the first approach was windshear which was easily fixed by dropping the nose. |
#2
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On Nov 22, 4:24*am, " wrote:
In this video in 3 minutes you will have endured 3 takes offs and 3 landings. http://www.youtube.com/watch?v=XCYjZ-XkPTk Short field relative to pilot experiences I guess. *Figured to go to Newton and work on a 3000 runway with large trees on the arrival end. Only thing I can think that triggered the stall horn on short final for the first approach was windshear which was easily fixed by dropping the nose. If you want to make a short field you need to get your touchdown point much closer to the end of the runway and get that float under control. You seem to be in a low power steady approach but you should be aiming to lose speed on short final. This can be achieved by making use of the back side of the power curve. Try to really land within the short field specs of the plane i.e. to get her down and stopped by a certain point on the runway. Cheers |
#3
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On Nov 22, 2:21*pm, "Flaps_50!" wrote:
On Nov 22, 4:24*am, " wrote: In this video in 3 minutes you will have endured 3 takes offs and 3 landings. http://www.youtube.com/watch?v=XCYjZ-XkPTk Short field relative to pilot experiences I guess. *Figured to go to Newton and work on a 3000 runway with large trees on the arrival end. Only thing I can think that triggered the stall horn on short final for the first approach was windshear which was easily fixed by dropping the nose. If you want to make a short field you need to get your touchdown point much closer to the end of the runway and get that float under control. You seem to be in a low power steady approach but you should be aiming to lose speed on short final. This can be achieved by making use of the back side of the power curve. Try to really land within the short field specs of the plane i.e. to get her down and stopped by a certain point on the runway. Cheers The wrong place to lose energy on a short field is in the flare. Get it slow on short final. Also, although probably not in your manual, once on the ground get the flaps up -- it puts more weight on the landing gear and braking is more effective. When I want the wheels on the runway quickly I bring up the flaps late in the flare (verify three times you're touching flaps, not gear!). In the Mooney the flaps are good for reducing stalling speed, they are not like the barn doors that a 182 has that increase drag, so once they've served their purpose -- getting me close to the ground with minimal velocity squared energy -- it's ok to bring them up so as to get down out of ground effect and be able to use the brakes. If you want to really polish short field stuff, make a pass or two over the runway in slow flight, within a foot or so of touchdown. . If you do that and feel comfortable, cut the power. The airplane will touch down right now, and you'll probably drag the tail skid a bit. What I've suggested is not conventional, but it works for us. |
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On Nov 23, 1:10*am, a wrote:
The wrong place to lose energy on a short field is in the flare. Get it slow on short final. Also, although probably not in your manual, once on the ground get the flaps up -- it puts more weight on the landing gear and braking is more effective. One of my abiding mysteries (probably my first ever post on RAP was on this yonks ago)... why don't pilots retract flaps immediately following touchdown and increase weight on the tires for better braking? Over the years, I've been told that (a) the flaps take far too long to retract to be beneficial and (b) the drag they produce is generally more efficient than the corresponding tire braking benefit. IIRC Bob Moore once told me that on the 727, he always retracted flaps upon touchdown at the head of the landing roll. *When I want the wheels on the runway quickly I bring up the flaps late in the flare (verify three times you're touching flaps, not gear!) In the aircraft flight decks I've seen, the landing gear is amid the glare shield and flaps abeam to the pilot on the pedestal! Ramapriya |
#5
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On Nov 22, 3:10*pm, a wrote:
The wrong place to lose energy on a short field is in the flare. Get it slow on short final. Also, although probably not in your manual, once on the ground get the flaps up -- it puts more weight on the landing gear and braking is more effective. *When I want the wheels on the runway quickly I bring up the flaps late in the flare (verify three times you're touching flaps, not gear!). Agree A. I do get flaps up right away after landing and BEFORE braking. This is actually in the POH. Stopping, I had tons of runway remaining My problem I believe is that I was somewhat "intimidated" by the closeness of trees (not well seen as I cut out that part of the approach) and need to work on that as well as put it closer to the numbers like Flaps50 indicated. The video has me higher then normal on approach then I am used to. With regards to retracting flaps before touchdown, I won't do this. I did this once and the plane simply dropped like a rock. My guess is the I lost the effectiveness of ground effect. Fortunately my gear is fixed and welded! |
#6
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On Nov 23, 6:05*am, D Ramapriya wrote:
Over the years, I've been told that (a) the flaps take far too long to retract to be beneficial and (b) the drag they produce is generally more efficient than the corresponding tire braking benefit. The Sundowner has "manual" flaps and retract instantly. I can see what you say on a Cessna since they take some time to go up, but my POH actually has the instructions after landing, flaps up, then braking. |
#7
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On Nov 22, 1:21*pm, "Flaps_50!" wrote:
This can be achieved by making use of the back side of the power curve. Try to really land within the short field specs of the plane i.e. to get her down and stopped by a certain point on the runway. Not sure how much further I could have gone on the back side of the power curve flaps. Stall horn was going strong on both landings. Any slower airspeed and I would have plunged to the ground. I think your second sentence is the answer, NOT the first one to correcting the problem I encountered in the video. Problem as I replied to A was that I was intimidated by the real deal 50 foot obstacle (AKA trees) causing me to make a steeper then normal descent. I plan to go back and try this again to keep practicing :-) |
#8
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In article
, D Ramapriya wrote: On Nov 23, 1:10*am, a wrote: The wrong place to lose energy on a short field is in the flare. Get it slow on short final. Also, although probably not in your manual, once on the ground get the flaps up -- it puts more weight on the landing gear and braking is more effective. One of my abiding mysteries (probably my first ever post on RAP was on this yonks ago)... why don't pilots retract flaps immediately following touchdown and increase weight on the tires for better braking? Over the years, I've been told that (a) the flaps take far too long to retract to be beneficial and (b) the drag they produce is generally more efficient than the corresponding tire braking benefit. The only reason I don't retract flaps after touchdown is because I constantly forget to.... It's very helpful in my glider to do this. Not only does it put weight on the tire and prevent lifting off again, but it also greatly improves roll control due to how the flaps and ailerons are linked, which is important on the ground roll for something with just one tire. And it's effective immediately because the flaps are directly actuated by the flap handle, so it takes literally half a second to put them all the way up. Trouble is, most of the time I don't remember to do this until long after I've rolled to a stop. -- Mike Ash Radio Free Earth Broadcasting from our climate-controlled studios deep inside the Moon |
#9
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On Nov 23, 11:21*am, " wrote:
On Nov 22, 1:21*pm, "Flaps_50!" wrote: This can be achieved by making use of the back side of the power curve. Try to really land within the short field specs of the plane i.e. to get her down and stopped by a certain point on the runway. Not sure how much further I could have gone on the back side of the power curve flaps. *Stall horn was going strong on both landings. Any slower airspeed and I would have plunged to the ground. I think your second sentence is the answer, NOT the first one to correcting the problem I encountered in the video. *Problem as I replied to A was that I was intimidated by the real deal 50 foot obstacle (AKA trees) causing me to make a steeper then normal descent. I plan to go back and try this again to keep practicing :-) The thing you may be missing is you are used to flying a certain glide slope, probably defined by the VASI. On a short field for me at least the final approach over the obstruction to flare is MUCH steeper. I'm trading off comfort and some margin for a very short roll-out. About early flap retraction -- you may have been higher than me when you brought them up -- also mine are powered, it takes seconds for the Mooney's to retract, and the M20's wings are very low, ground effect is there even with flaps up. Doing it my way may only buy 50 feet of runout -- never tested that, but I know now the nature of the next flying skills wager that'll happen between me and my flying buddies. It will have to do with how close to the runway turnoff can we land and still make the turn. I can see myself dragging it in, hanging on the prop way on the back side of the power curve, touching down on the tail skid. I guess we'd have to agree the airplane should be usable after the landing for the landing to be valid, and no swing wings or arresting cables allowed (one buddy is ex Navy, he misses the tail hook). It could be an expensive way to win a 'burger and a coke. |
#10
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On Nov 23, 11:43*am, a wrote:
The thing you may be missing is you are used to flying a certain glide slope, probably defined by the VASI. On a short field for me at least the final approach over the obstruction to flare is MUCH steeper. I'm trading off comfort and some margin for a very short roll-out. I bet you are right on what I am used to for glide. Instrument world does make a mess of visual approaches and it's nuances. Generally I don't miss the VASI or PAPI, as that is how I learned ) keeping the bug spot on the numbers), but what I haven't had much practice "for real reasons" is that 50 foot obtacle clearance. Imaginary trees not quite as "intimidating" when the real deal trees tend to block the lights at approach end of the runway on a low glide path. :-) and I really didn't feel that low coming into M23 as I would have made the runway (without the trees) had the fan quit. The last short field airport I went to was 2700 foot and it was much easier since there were no obstacles. So in a nutshell, short fields I can hang with, it's that extra variable having trees :-) that give it a little extra slam dunking challenge for me. |
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