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12-20-2010, 07:06 AM
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Join Date: Mar 2008
Location: Boone, IA
Posts: 145
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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.
__________________
Kelley Kokemiller
9A sb N94KK 400hrs. and counting
Barrett O-320
Catto 3-blade
Panther tail complete
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12-20-2010, 07:35 AM
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Join Date: Nov 2005
Posts: 125
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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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RV-4, O-320, FP
CFII/MEI & dreamer
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12-20-2010, 07:48 AM
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Join Date: Mar 2005
Location: Dallas area
Posts: 10,768
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Quote:
Originally Posted by N4744Z
I know it reduces aerodynamic braking and wouldn't be good practice on short field landings
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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.
__________________
Mel Asberry, DAR since the last century.
EAA Flight Advisor/Tech Counselor, Friend of the RV-1
Recipient of Tony Bingelis Award and Wright Brothers Master Pilot Award
USAF Vet, High School E-LSA Project Mentor.
RV-6 Flying since 1993 (sold)
<rvmel(at)icloud.com>
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12-20-2010, 08:00 AM
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unqualified unfluencer
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Join Date: Jan 2005
Location: Highland Village, TX
Posts: 4,088
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Yes.
...I'm a manual dumper (so I can make the bravo turn off by where I hangar).
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Doug Reeves (your host) - Full time: VansAirForce.net since '07 (started it in '96).
- Part time: Supporting Crew Member CAE Embraer Phenom 300 (E55P) @ KDFW.
- Occasionally: Contract pilot (resume).
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12-20-2010, 08:44 AM
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Join Date: Jun 2005
Posts: 3,275
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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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12-20-2010, 09:13 AM
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Join Date: Mar 2005
Location: Dallas area
Posts: 10,768
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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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Mel Asberry, DAR since the last century.
EAA Flight Advisor/Tech Counselor, Friend of the RV-1
Recipient of Tony Bingelis Award and Wright Brothers Master Pilot Award
USAF Vet, High School E-LSA Project Mentor.
RV-6 Flying since 1993 (sold)
<rvmel(at)icloud.com>
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12-20-2010, 09:15 AM
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Senior Curmudgeon
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Join Date: Sep 2005
Location: Dayton Airpark, NV A34
Posts: 15,420
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What Mel said 
__________________
Mike Starkey
VAF 909
Rv-10, N210LM.
Flying as of 12/4/2010
Phase 1 done, 2/4/2011 
Sold after 240+ wonderful hours of flight.
"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
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12-20-2010, 09:17 AM
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Join Date: Jan 2005
Location: Peachtree City, Ga
Posts: 1,040
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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.
__________________
Vern Darley
Awarded FAA "The Wright Brothers 'Master Pilot' Award"- for 50 years safe flying
RV-6A N680V / RV-10QB N353RV
Luscombe 8E N2423K 50+years
Hatz Biplane N2423Z soon to be birthed
Falcon RV Squadron Founder
KFFC Hanger D-30
Peachtree City, Ga
770 310-7169
EAA Technical Counselor #5142
EAA Flight Advisor #486336
ATP/CFI/A&P/DAR
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12-20-2010, 09:39 AM
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Join Date: Feb 2005
Posts: 1,082
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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.
__________________
Mike
JAMES AIRCRAFT.com
Flying - RV8 Hot Rod "Drone Killer"
Flying - RV8 "Look'n Good"
RV4 - FAST & FUN! Rebuilt, Flown, Sold
RV-7A Built, Flown, Sold
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12-20-2010, 10:05 AM
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Join Date: Jan 2005
Location: Near Scipio, in Southern Indiana
Posts: 1,779
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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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Bob Kelly, Scipio, Indiana
Tech Counselor
Founder, Eagle's Nest Projects
President, AviationNation, Inc
RV-9A N908BL, Flying
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