HobbyKing.com New Products Flash Sale
Reply
Thread Tools
This thread is privately moderated by z80, who may elect to delete unwanted replies.
Old Apr 17, 2009, 05:14 PM
z80
Registered User
Copenhagen, Denmark
Joined Sep 2006
12 Posts
Quote:
Originally Posted by gotboostedvr6
would it have been easier to build this program using VB?
In general, yes. Given that VB is made for prototyping and fast development. But I was going for something more portable and easy to use. Using VB would require the user to have Windows and the DOT-net installed. Using HTML it will run on everything with a standard browser. My motivation here was actually to try out the HTML canvas object for rendering vector graphics dynamically.

Quote:
Originally Posted by gotboostedvr6
I was looking through the HTML and this must have taken you forever to code...
I think it took about 6-8 hours including polishing after getting feedback here, so quite a small project really.

Quote:
Originally Posted by gotboostedvr6
Good job man!
Thanks
z80 is offline Find More Posts by z80
Reply With Quote
Sign up now
to remove ads between posts
Old Apr 17, 2009, 05:23 PM
z80
Registered User
Copenhagen, Denmark
Joined Sep 2006
12 Posts
Quote:
Originally Posted by Brian Click
Nice tool, Z80. I'll be using it a lot, making various wings. And thanks for keeping all the code in one HTML file instead of using external JS. Easy for anyone to use it offline by saving the web page.
You're welcome Was going for portability and max flexibility. If you're using IE you do need external js however since it doesnt support the canvas object. I could have included that inline, but I chose not to since its really an issue with IE not being HTML compliant. No need to bother compliant browsers with that ;-)
z80 is offline Find More Posts by z80
Reply With Quote
Old Apr 17, 2009, 05:25 PM
z80
Registered User
Copenhagen, Denmark
Joined Sep 2006
12 Posts
Quote:
Originally Posted by Edwinzea
Hey nice project, I looking forward for new adds :P, would be nice to have the possibilito of includding some extra panels for bit more complicated wings
Yeah, I know. Multiple panels would be nice. Hmm.. I will have to do some more math then :-)

Quote:
Originally Posted by Edwinzea
and somehow in my case the drawing did not change eventhough I put "0" for sweep :P
Strange with the zero sweep value -- doesnt happen for me.
z80 is offline Find More Posts by z80
Reply With Quote
Old Apr 25, 2009, 07:20 PM
Jack
USA, ME, Ellsworth
Joined May 2008
16,916 Posts
A new to wings guy and new to your calculator too. I am finding it very helpful though, thanks for your donation on that.

As a general rule, would you extend the trailing edge of the elevon and the centerline of the wing and use the resulting intersection (actually located at point in space in the prop cutout in most cases) to measure the Root Chord for the calculator's input?

And is there a general rule as to whether or not elevons should or should not be included as part of the wing area?

Thanks for any help,

Jack
jackerbes is offline Find More Posts by jackerbes
Reply With Quote
Old May 15, 2009, 07:18 AM
Huge field, little tree... WTH
Danoman812's Avatar
Anniston, Al.
Joined May 2009
391 Posts
Z80...
Dude...!!! You really helped me out there with your calculator... Thanks SO much...!!!
Danoman812 is offline Find More Posts by Danoman812
Reply With Quote
Old May 19, 2009, 02:03 PM
Complete idiot
Joined May 2009
3 Posts
this was quite helpful.
Would it be possible to add a feature for a flat nose?
karate5662$ is offline Find More Posts by karate5662$
Reply With Quote
Old May 19, 2009, 06:34 PM
Registered User
Australia, VIC, Benalla
Joined Oct 2005
277 Posts
Awesome html based CoG calc!! well done

just one thing... are measurements in centimeters or inches or chains or furlongs or something

Az
Azryl is offline Find More Posts by Azryl
Reply With Quote
Old May 19, 2009, 07:18 PM
Complete idiot
Joined May 2009
3 Posts
Quote:
Originally Posted by Azryl
Awesome html based CoG calc!! well done

just one thing... are measurements in centimeters or inches or chains or furlongs or something

Az
the units don't matter. as long as you know what units you want.
karate5662$ is offline Find More Posts by karate5662$
Reply With Quote
Old May 26, 2009, 06:33 AM
Registered User
bitmaniac's Avatar
Greece
Joined Apr 2004
49 Posts
As jackerbes mention before:
"...And is there a general rule as to whether or not elevons should or should not be included as part of the wing area?..."

Answer hasnot be given yet , Please specify.
bitmaniac is offline Find More Posts by bitmaniac
Reply With Quote
Old May 26, 2009, 07:55 AM
internet gadfly
nmasters's Avatar
Colorado
Joined Aug 2006
2,165 Posts
Elevons are part of the wing so include their area when calculating lift. Reimar Horten left them out of stability calculations but that's different and besides few modelers want as much stability as he used
nmasters is offline Find More Posts by nmasters
Reply With Quote
Old May 28, 2009, 06:03 AM
Registered User
Australia
Joined May 2009
70 Posts
the CG is allways in the front all wings are diffrent its all trial and error play around with it.
shockflyyer3d is offline Find More Posts by shockflyyer3d
Reply With Quote
Old Jun 03, 2009, 01:37 PM
Registered User
foamkiller's Avatar
thomasville P.A.
Joined Sep 2004
225 Posts
dose this work on delta wings
foamkiller is offline Find More Posts by foamkiller
Reply With Quote
Old Jun 18, 2009, 11:15 AM
Registered User
Bing44's Avatar
United States, OR, Independence
Joined Feb 2008
1,288 Posts
Quote:
Originally Posted by foamkiller
dose this work on delta wings
I would like to know also. I have a Hyperflea that doesn't seem to fly properly with the CG where it is published, but it may just be me with my first delta wing plane; the nose drops drammatically in a turn and it seems to be somewhat unstable. I run the numbers through this calc. and the CG comes up an inch forward. That would make it worse. Also, how do we know what the airfoil is? Don't we need thickness to figure the CG?

Sorry if this is lame; I'm not very engineering savvy.

jim
Bing44 is offline Find More Posts by Bing44
Reply With Quote
Old Jul 09, 2009, 01:04 AM
The 6 P principle works for me
elecfryer's Avatar
Ventura CA
Joined Aug 2007
961 Posts
awesome, way to go z-80!

Regarding previous Delta/CG questions, IMHO, YES!

I happen to love the Diamond Dust (for IC)by Jeff Gilbert. This is a Delta with twin canted out fins. His original w/s is 34.5" I have built 5 different sized electric Dust's including 4 with my own plans @ w/s sizes of 18", 22", 24", 28.5" and 34.5" from Jeff's plans - modified for elec! I started them with CG at about 16%. They all flew better with the CG at 18%-20%. I have not tried 25%.....yet! With the CG at 18%-20% they all launched and landed better than when at 15%-16%
elecfryer is offline Find More Posts by elecfryer
Reply With Quote
Old Jul 09, 2009, 01:20 AM
The 6 P principle works for me
elecfryer's Avatar
Ventura CA
Joined Aug 2007
961 Posts
feedback time!

Z-80, Love the way this prints out! Everything you need on one page, including the mac lines if you want to see them! I used to do all this with paper, pencil, calculator, ruler and a lot of time! ......And did I mention the need for an eraser?????

IMHO this has to be one of the easiest CG calculators to use. Your work is appreciated, Thanks again!!
elecfryer is offline Find More Posts by elecfryer
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
flying wing cg ?'s mscj Foamies (Kits) 1 Mar 03, 2003 09:53 PM
Flying wing CG with shortened span MSB Foamies (Kits) 2 Jul 28, 2002 07:23 PM
Flying Wing CG Choppa Nutta Power Systems 8 Apr 17, 2002 11:45 AM
Flying Wing CG Paul Susbauer Parkflyers 2 Jan 29, 2002 01:31 PM
Flying wing CG Anders Power Systems 4 Oct 05, 2001 04:39 AM