Mailing List lml@lancaironline.net Message #66463
From: <mjrav@comcast.net>
Sender: <marv@lancaironline.net>
Subject: Re: [LML] Flaps on take-off?
Date: Sat, 10 Aug 2013 08:58:35 -0400
To: <lml@lancaironline.net>
Twice on the Sun &Fun 100 mile race, I held the plane on the runway without flaps for about 40 extra kts.
Timing started at brake release and I wanted less drag however I could.
I won my class in both races but landed on a flat tire each time.  ( I'm a slow learner)

Another thing,  When my small tail 360 is loaded heavy and with an aft CG there are pitch sensitivity issues.
The first time I took off this way, there was a pitch oscillation that got my knees shaking.
The cure for this is to leave the flaps down longer after takeoff.  Flaps are behind the center of pressure and have a stabilizing effect. 
Think of the feathers on an arrow. 

Also, use of flaps gives a substantial pitch change that allows much better visibility over the nose. I suppose this is more important on landing where it is nice to be able to see the runway but it's good on takeoff also.

Mark Ravinski
360  1551 hrs




From: "Dico Reijers" <dico@internetworks.ca>
To: lml@lancaironline.net
Sent: Friday, August 9, 2013 3:30:37 PM
Subject: [LML] Flaps on take-off?

Hi All,

I am wondering how many people use flaps on take off with the IVP?  I was
told to use about 15 degrees of flaps.    I've also discovered that I don't
like retracting the flaps unless the IAS is about 135knots IAS.  No real
reason other than I notice that you don't really feel the retraction as
much as you do at the lower speeds.

So I guess I am wondering, if you only have a couple people on board (or
even a full load with lots of runway), do you use flaps?

-Dico


--
Regards,

Dico Reijers

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