I always find it interesting that the thread titles in here end up being one
thing vs another thing, like flap v belly board.
I'll grant you that building a belly board as an after thought is probably
easier than building flaps. My plane was down for 2 or 3 months while I added
flaps, fairings
I think more effective flaps will require additional elevator authority at
flare...if I remember correctly, usually flap deflection moves the center of
lift forward (or was that aft?), thereby changing pitch-moment in a nose-down
direction. Peter
the bellyboard will not be
hinged and therefore un supported across its length.
Thoughts?
Dene Collett
-Original Message-
From: KRnet [mailto:krnet-bounces at list.krnet.org] On Behalf Of Flesner via
KRnet
Sent: Monday, September 15, 2014 14:39
To: KRnet
Subject: Re: KR> flaps v belly bo
It should be noted that the "stock" flaps in the plans didn't generate a lot of
drag or lift, but were better than nothing. A belly board generates lots of
drag, but not lift. But a belly board is really a patch for the lack of
planning for adequate flaps in the plans.
While I chose to add fl
I misspoke a bit on the Nanchang. That is a split flap the whole way
across. The Mustang 2 is more a conventional flap outboard of fusalage
and like a split flap under the fusalage.
Original Message
Subject: Re: KR> flaps v belly board
From: "brian.kraut--- via KRne
inese Nanchang has the same arrangement also:
http://getcustomart.wordpress.com/2013/12/02/getcustomart-com-delivers-custom-nose-are-for-vintage-1969-nanchang-cj-6-chinese-trainer/
Original Message
Subject: Re: KR> flaps v belly board
From: Dene via KRnet
List-Pos
" wide flaps the plans show.
Original Message
Subject: Re: KR> flaps v belly board
From: Jeff Scott via KRnet
List-Post: krnet@list.krnet.org
Date: Mon, September 15, 2014 9:55 am
To: 'KRnet'
It should be noted that the "stock" flaps in the plans didn
Huh? I really can't be convinced of that. The force of the air hitting the
top of the gurney flap is a force downward on the back of the car - very
little, if any, differential pressure is causing any significant downward
force. It's like saying that the shape of an airplane wing causes a "va
You're putting a huge air dam under the plane. This is essentially the
same as a gurney flap on the back of a stock car. While the flap itself
isn't making downforce on the car, it's making the air under the wing, and
quite a distance out to either side of the flap pack up, and provide
greater di
I wrote:
"...or perhaps it changes AOA of the tail or whole airplane to lower
drag..."
That's got to be the dumbest thing I've ever written, now that I think about
it...
Mark Langford, Harvest, AL
ML at N56ML.com
www.N56ML.com
Jeff Scott wrote:
" A belly board generates lots of drag, but not lift"
I thought this also, "common knowledge", I believe, and it may not be true
"lift" that the belly board generates, but something makes drops the stall
speed about 3 mph. I proved this a few weeks ago while calibrating my stal
Having read the ease of the Belly board construction I am wondering if the
complexity of?installing flaps is worth while ? I am at the point of finishing
the stubs and starting flaps. Knowing what you know about?belly board vs flaps
would you guys?install flaps? Is the?additional low speed lift
>Having read the ease of the Belly board construction I am wondering
>if the complexity of installing flaps is worth while ? I am at the
>point of finishing the stubs and starting flaps. Knowing what you
>know about belly board vs flaps would you guys install flaps? Is the
>additional low spee
Sent on the new Sprint Network from my Samsung Galaxy S?4.
Original message From: samantha toner via KRnet Date:09/15/2014 2:22 AM (GMT-06:00) To:
KRnet Subject: KR> flaps v belly board
Original message
From: samantha toner via KRnet
List-Post: krnet@list.kr
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