KR> Speed Brake split flap design

[ppaulvsk]

For now, all I'm putting in is a BIG speed brake. I'm keeping my options open 
though. I decided is when Rob once said. " Keep it simple and get it done" 
?Paul ViskBelleville Il?618 406 4605


Sent from my Verizon, Samsung Galaxy smartphone
 Original message From: Larry Flesner via KRnet  Date: 11/4/16  6:59 PM  (GMT-06:00) To: KRnet  Cc: Larry Flesner  Subject: Re: KR> 
Speed Brake split flap design 
At 12:46 PM 11/4/2016, you wrote:
>I have the RAF48 airfoil on my Kr2 project.? I'm looking into the speed
>brake recommendation.
>Has anyone tried to build an extended speedbrake that reached out the stub
>wings to create somewhat of an integrated split flap design?
>Tucker
+++

Unless you will be flying from very short runways, lift producing 
flaps are not necessary.? However, drag for the landing approach is 
critical , IMHO.? If you want flaps, build them to produce drag also 
for the landing approach.? A simple speed brake will suffice for 
drag.? There really is no need to try to combine the two unless you 
are looking for an aeronautical / mechanical challenge.? 600 hour 
with speed brake only.

Larry Flesner? 


___
Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search.
Please see LIST RULES and KRnet info at http://www.krnet.org/info.html.
see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change 
options
To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org

KR> Speed Brake split flap design

[Larry Flesner]

At 12:46 PM 11/4/2016, you wrote:
>I have the RAF48 airfoil on my Kr2 project.  I'm looking into the speed
>brake recommendation.
>Has anyone tried to build an extended speedbrake that reached out the stub
>wings to create somewhat of an integrated split flap design?
>Tucker
+++

Unless you will be flying from very short runways, lift producing 
flaps are not necessary.  However, drag for the landing approach is 
critical , IMHO.  If you want flaps, build them to produce drag also 
for the landing approach.  A simple speed brake will suffice for 
drag.  There really is no need to try to combine the two unless you 
are looking for an aeronautical / mechanical challenge.  600 hour 
with speed brake only.

Larry Flesner  

KR> Speed Brake split flap design

[Mark Langford]

Paul Visk wrote:

 >> If you go back to the 2015 gathering pic's. You'll see Dan design. 
It's probably exactly what you want. I think his plan is still for sale. <<

To elaborate, Dan Pritchard's plane has flaps with a "Fowler" type 
deployment mechanism, but I didn't notice that they were also continuous 
across the bottom as a belly board.  Looking at the third photo down 
from the top of http://www.krnet.org/mmv/, it's possible that it does, 
but I have no photos showing that.  Maybe somebody else does, and can 
post it.

The best photo I have of that (that didn't get into the Gathering 
photos) is enclosed, and I don't believe it shows the wing flaps being 
connected to the belly board, at least not externally.  That's a relief, 
because I thought about doing that, but wasn't wild about the geometry 
or linkage mechanism, so went went with larger outboard flaps instead.

Remember, there's a limit of about 200k on photos, so don't bother 
sending a 5MB file from your phone...it won't make it.  Note that the 
enclosed photo is both large, and detailed.  That's done with FREE 
software called "Irfanview" (among many others), and is pretty easy once 
you figure it out.  Google is your friend here...

Mark Langford
ML at N56ML.com
http://www.n56ml.com

-- next part --
A non-text attachment was scrubbed...
Name: 150906_s005.jpg
Type: image/jpeg
Size: 97611 bytes
Desc: not available
URL: 

KR> Speed Brake split flap design

[ppaulvsk]

If you go back to the 2015 gathering pic's. You'll see Dan design. It's 
probably exactly what you want. I think his plan is still for sale.?
Paul Visk?Belleville Il?618 406 4705


Sent from my Verizon, Samsung Galaxy smartphone
--
Hi,

I wasn't able to get to the archive page, so my apologizes if this is a
repeat.

I have the RAF48 airfoil on my Kr2 project.? I'm looking into the speed
brake recommendation.

Has anyone tried to build an extended speedbrake that reached out the stub

KR> Speed Brake split flap design

[Tucker Brown]

Hi,

I wasn't able to get to the archive page, so my apologizes if this is a
repeat.

I have the RAF48 airfoil on my Kr2 project.  I'm looking into the speed
brake recommendation.

Has anyone tried to build an extended speedbrake that reached out the stub
wings to create somewhat of an integrated split flap design?

Thanks,
Tucker