HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Jun 17, 2011, 10:57 AM
if you see a weed, pick it
malakiblunt's Avatar
Devon England
Joined Oct 2006
355 Posts
Discussion
were to hinge flaps on Clark Y ?

Hi im in the process of drawing up a 6ft span cessna Birddog, im looking for extream stol performance, to that end im building it very light,
I had originaly intended to use a Drela aerofoil as i realy like the way my supergee handles, but i know enough about to know i cant just increase the chord 13" and double the wing loading expect it to handle the same.

Anyways so ive gone back to basics and decided on the Clark Y (unless anyone ccan recomend something better?) , Its going to be a hotwired wing so i can get the foil acurate, my qeustion is were should i hinge the flaps for best performance?

kind regards
philip
malakiblunt is offline Find More Posts by malakiblunt
Reply With Quote
Sign up now
to remove ads between posts
Old Jun 17, 2011, 12:21 PM
Herk
HerkS's Avatar
Virginia USA
Joined Jun 2007
1,652 Posts
This data should put you in the ball park
HerkS is offline Find More Posts by HerkS
Reply With Quote
Old Jun 18, 2011, 03:08 AM
No Guts No Glory
kestrel2003's Avatar
Switzerland
Joined Feb 2003
1,232 Posts
what book is that table from

Hi, what book/Report is the table from? rgds mv
kestrel2003 is offline Find More Posts by kestrel2003
Reply With Quote
Old Jun 18, 2011, 03:47 AM
Grumpy old git.. Who me?
JetPlaneFlyer's Avatar
Aberdeen
Joined Mar 2006
12,128 Posts
That table is really good.. the only caveat i would add is that it's based on quite high Re (609,000). The performance of flaps at the much lower Re of a medium size model during take off and landing could be very significantly different..
JetPlaneFlyer is offline Find More Posts by JetPlaneFlyer
Reply With Quote
Old Jun 18, 2011, 09:16 AM
Herk
HerkS's Avatar
Virginia USA
Joined Jun 2007
1,652 Posts
Quote:
Originally Posted by kestrel2003 View Post
Hi, what book/Report is the table from? rgds mv
Airplane Performance, Stability and Control
Courtland D. Perkins, & Robert E. Hage

Most of those referenced NACA reports are probably still available
http://ntrs.nasa.gov/search.jsp
HerkS is offline Find More Posts by HerkS
Reply With Quote
Old Jun 18, 2011, 12:35 PM
No Guts No Glory
kestrel2003's Avatar
Switzerland
Joined Feb 2003
1,232 Posts
great, many thanks

thanks, many regards mv
kestrel2003 is offline Find More Posts by kestrel2003
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion Aileron/flap hinge on parkzone stinson FinalFrag Foamies (Kits) 3 Mar 20, 2011 09:28 PM
Question Help Mounting Clark Y wings on SS snolord1 Parkflyers 0 Dec 03, 2004 09:02 PM
Help! Clark Y X S7055 - Wich One????? CESARNOGUEIRA Modeling Science 3 Jan 16, 2003 10:07 AM
Clark Y X S7055 - Wich One????? CESARNOGUEIRA Scale Kit/Scratch Built 2 Jan 13, 2003 08:58 AM
CofG / Clark Y help stuartaw Power Systems 5 Oct 08, 2001 06:50 PM