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#11
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You fly the airplane until it is tied down. The nose will
weathervane into the wind unless you use the rudder to keep it pointed straight [or the direction you want] and you will be blown sideways by the wind unless you use aileron and brakes to steer the airplane. After touchdown, it is normal and proper to use full aileron during the roll out on the runway and if you look in your aircraft manual or a pilot training manual, you'll see a taxi control diagram. -- James H. Macklin ATP,CFI,A&P "Dan" wrote in message ups.com... | All, | | Occasionally, I find myself in the following situation when landing. I | am trying to figure out what I am doing wrong. | | I fly over the numbers at the proper airspeed, and on the (VASI) | glideslope. I flare by putting the cowling to the horizon and holding | off unitl touchdown. After touchdown, I find the plane drifting to the | left, while the nose is pointing to the right. Applying further right | rudder seems to result in a squirrley/sliding feeling (not sure if I am | acutally sliding though, just afraid to push it any further). Applying | brakes at anything more than very slight pressure results in skidding. | At this point, I find myself rolling down the runway, unable to slow | down fast enough and trying to control the drift. | | This could happen in little to no wind conditions. What am I doing | wrong? I'm not a beginner, but occasionally this happens and I can't | seem to figure it out. | | Do I need to.... | | A. Crank in aggressive alieron to the right. | B. Apply lots of back-pressure to get more weight on the mains to allow | breaking. | C. Something else....? | | Dan | |
#12
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![]() "Dan" wrote in message oups.com... It doesn't happen that often, but it did last night. I am trying to remember if it is always left, and actually I think it is. It is NOT the same airplane. Had the problem in an Archer, Arrow, and Comanche. - probably my technique. Could I be unintentionally doing something with the rudder on touchdown? My guess is that it is your sight picture that is the problem. You have ruled out wind. You have ruled out the equipment, since it happens on different planes. I think you must really have the nose pointed to the left, because that is the direction the airplane is really going. That means what you think you are seeing with the direction of the nose is wrong. If while sitting in the left seat, and you are rolling straight down the runway, if you look at the nose and observe where the spinner is, it looks like it is off to the right. Bingo. There is your problem. You have to look down the offset parallel line of the cowling. If the eyeball in your head is18 inches off to the left of the center of the airplane, you need to be looking at a spot on the cowl that is 18 inches to the left of the crankshaft, and lining that point up with the end of the runway. Remember to look far down the runway, of course. Try it; I think it will help. -- Jim in NC |
#13
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This may indeed be the problem. Does the yaw to the left decrease in
intensity as your ground speed slows? If so it could very well be an aileron input error. Another thing to check is something that I ran into when transitioning to the right seat in a C182 RG. I was inadvertently removing my left foot from the rudder to move my leg out of the way of the flap switch on roll out. The problem was that at the same time I was unknowingly pushing on the right rudder. Instant veer towards the right. All it took to discover my error was a quick ride around the pattern with another pilot, we spotted it together almost instantly. Fly with a CFI or another pilot in the right seat. Eliminate the aircraft as being the problem. And be sure that you are not transferring automobile driving muscle memory to your flying by lifting your right foot off the "accelerator" and pushing down on the "brake". Jim |
#14
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I have had a left drift during flare where it appeared there was a
crosswind when there was none. It happened most often when I was solo. I finally attributed it to more wing load (drag)on the left side since I was the only passenger. I am flying a cherokee six with tip tanks and if landing imbalanced, alieron correction is a must to correct for drift. It always seemed to sneak up on me in very calm conditions when I was complacent. Dan wrote: All, Occasionally, I find myself in the following situation when landing. I am trying to figure out what I am doing wrong. I fly over the numbers at the proper airspeed, and on the (VASI) glideslope. I flare by putting the cowling to the horizon and holding off unitl touchdown. After touchdown, I find the plane drifting to the left, while the nose is pointing to the right. Applying further right rudder seems to result in a squirrley/sliding feeling (not sure if I am acutally sliding though, just afraid to push it any further). Applying brakes at anything more than very slight pressure results in skidding. At this point, I find myself rolling down the runway, unable to slow down fast enough and trying to control the drift. This could happen in little to no wind conditions. What am I doing wrong? I'm not a beginner, but occasionally this happens and I can't seem to figure it out. Do I need to.... A. Crank in aggressive alieron to the right. B. Apply lots of back-pressure to get more weight on the mains to allow breaking. C. Something else....? Dan |
#15
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It would not be the best advice to say.. raise the flaps to get more
braking effect, but that is the placard in the Beech Sport/Sundowner/Sierra series. In my '76 Sundowner, it cost me a set of tires before I realized that flap retraction is pretty much mandatory for any decent braking. My plane was missing the "Raise flaps..." placard. It's super easy to lock / drag a wheel with the flaps down. How did it pass the annual every year if a placard was missing? oops.. B |
#16
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"Dan" wrote in message
oups.com... I am flaring with my left hand (right hand on the throttle), so probably crank the yoke to the left a bit... For what it's worth, if you get into the habit of, when over the runway, always correcting drift with aileron, and correcting heading with rudder, the problem you're experiencing will go away naturally (and I think it's likely that "P S" has correctly identified the issue). Even if you do accidently pull the yoke a bit left while flaring, as soon as the airplane starts to drift your natural reaction will (should) be to compensate with some right aileron, which will negate the accidental left aileron you put in in the first place. Obviously there are times when heading is the appropriate correction for drift, but by the time you are ready to touch down on the runway, you *must* have the nose of the airplane aligned with the runway. The rudder is used for that. Likewise, you *must* compensate for any drift, so that the airplane is tracking straight down the runway. The aileron is used for that. You may recognize these control inputs as being the same for one method of dealing with crosswinds. ![]() method, you do at the very end, just before touching down, use the controls in just this way. So it's perfectly reasonable to just always get in the habit of controlling the airplane just before touchdown in this way. In addition (not that this seems to be the issue you're dealing with), while one should be careful to not overcontrol the airplane, and while in cruise flight it often makes sense to let light turbulence just have its way with the airplane (many gusts are corrected by another gust that comes along right after...chasing the gusts with the flight controls is inefficient and tiring ![]() you. If you get pushed one direction, be sure to get the plane controlled back the other direction ASAP, all the while keeping the nose aligned with the rudder. Pete |
#17
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#18
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On Sat, 5 Aug 2006 18:24:42 +1200, Dave Doe wrote:
In article . com, says... All, Occasionally, I find myself in the following situation when landing. I am trying to figure out what I am doing wrong. I fly over the numbers at the proper airspeed, and on the (VASI) glideslope. I flare by putting the cowling to the horizon and holding off unitl touchdown. After touchdown, I find the plane drifting to the left, while the nose is pointing to the right. Applying further right rudder seems to result in a squirrley/sliding feeling (not sure if I am acutally sliding though, just afraid to push it any further). Applying brakes at anything more than very slight pressure results in skidding. At this point, I find myself rolling down the runway, unable to slow down fast enough and trying to control the drift. This could happen in little to no wind conditions. What am I doing wrong? I'm not a beginner, but occasionally this happens and I can't seem to figure it out. Do I need to.... A. Crank in aggressive alieron to the right. B. Apply lots of back-pressure to get more weight on the mains to allow breaking. C. Something else....? What you need to do is practice some crosswind landings. Apart from gusty conditions, which needs more attention, I fly the aircraft crabbed until about 100 to 200ft above the runway. Then I gently straighten the aircraft with rudder and align it with the runway at the same time stopping drift with opposite aileron. The aircraft is now set up to land on one wheel and most times little correction is required after that. However, as you near & touch the runway and the aircraft slows down, you will need more aileron to correct any drift. This is the opposite you would do for take-off where you put in full aileron into wind as you start the take-off roll then as you increase speed slowly reduce aileron input. |
#19
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The placard can and should be replaced. You can buy it from
Beech or have one made. "B A R R Y" wrote in message ... | On Fri, 4 Aug 2006 16:22:54 -0700, "BTIZ" | wrote: | | It would not be the best advice to say.. raise the flaps to get more | braking | effect, but that is the placard in the Beech Sport/Sundowner/Sierra | series. | | In my '76 Sundowner, it cost me a set of tires before I realized that | flap retraction is pretty much mandatory for any decent braking. My | plane was missing the "Raise flaps..." placard. It's super easy to | lock / drag a wheel with the flaps down. | | | How did it pass the annual every year if a placard was missing? | | oops.. | B | | | Excellent point. The device that is in the panel where the placard | was has been there ~ 15 years. I've owned the plane for 2 years. | | The placard is STILL missing. G |
#20
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The placard can and should be replaced. You can buy it from
Beech or have one made. Can you make it yourself, or does it have to be an "official" placard installed by an A&P? Jose -- The monkey turns the crank and thinks he's making the music. for Email, make the obvious change in the address. |
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