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  #1  
Old 12-20-2010, 07:06 AM
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Kokemiller Kokemiller is offline
 
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Default Retracting flaps after landing

Just wondering how many of you make it a standard practice to retract the flaps as soon as you touchdown. I know it reduces aerodynamic braking and wouldn't be good practice on short field landings but it does have some good advantages:
1. Makes it easier to keep the nose off longer (don't notice this in the 7A but it makes a big difference in the 9A)
2. In case of a go around the flaps are already up
3. Less debris beating up the bottom of the flaps
4. Reduces chances of gusts making you airborn again.
5. Increases braking effectiveness as less lift puts more weight on tires.
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  #2  
Old 12-20-2010, 07:35 AM
matt matt is offline
 
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I do a lot of short field landings on strips and for me dumping flaps is standard practice.

Not only because I get a lot of paint chips in the flaps if I don't: My ground roll is greatly reduced; I can apply brakes in a way more aggressive way.

jm2c as usual..
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  #3  
Old 12-20-2010, 07:48 AM
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Quote:
Originally Posted by N4744Z View Post
I know it reduces aerodynamic braking and wouldn't be good practice on short field landings
Actually the addition of brake effectiveness outweighs aerodynamic braking at landing speeds. My home strip is 1500' and is considered short by many. I ALWAYS dump flaps immediately on touch down. And as you say, it also reduces the probability of going airborne again.
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  #4  
Old 12-20-2010, 08:00 AM
DeltaRomeo DeltaRomeo is offline
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Thumbs up Yes.

...I'm a manual dumper (so I can make the bravo turn off by where I hangar).
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  #5  
Old 12-20-2010, 08:44 AM
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I don't. I am concentrating on keeping the nose wheel off the pavement then slowly letting it down. I minimize braking and am not usually hard on them to get off at any specific turnoff. Once I turn off I usually raise them to minimize the chance of debris damage. Note sure that it is a big hazard with wheel pants.
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  #6  
Old 12-20-2010, 09:13 AM
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Flaps tend to push the nose down. It is easier to hold the nose up with the flaps retracted.
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  #7  
Old 12-20-2010, 09:15 AM
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What Mel said
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  #8  
Old 12-20-2010, 09:17 AM
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Default Raising flaps after a landing-Yes

...but for a different reason. Having had the famous flap motor quit working happen a time or two, I want to know the flaps are up while taxiing IN, rather than while taxing OUT with baggage and pax loaded for flight. It's just one less hassle.
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  #9  
Old 12-20-2010, 09:39 AM
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While I don't disagree with retracting the flaps on the landing roll out on a short field landing which is proper technique, if any of you fly with a CFI and in a retractable gear plane, don't be surprised if you get your hand slapped while retracting the flaps on roll out.
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  #10  
Old 12-20-2010, 10:05 AM
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The flap switch is the first thing I hit when the wheels are down. Makes it easier to keep the nose up, allows it to stay up longer, and still lets the nose down easy. With the nose up, the aerodynamic braking is fine. Also, with the 9, having the flaps up protects the wing/flap joint as you enter/exit. I am always afraid of someone stepping on that back two inches of the wing (not the flap) and damaging it. Fixing a flap is easier than fixing a wing.

Bob
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