Split Elevon Air Brake Testing on Flying Wing


I wanted to see if I could use a split elevon and some serious mixing to use a split elevon as an airbrake for my flying wing. The Raptor 100 is light and pretty tough, a perfect test platform! Lets try it.

Split the elevons in 2/5 and 3/5 lengths (to compensate for the leverage on the outer wing), added two more servos and some serious mixing on my 9x...

Worked great!

I'm planning on using something similar on my larger, heavier Raptor 140B and new Raptor 140C. These two airplanes are much heavier and suffer from a very long glide ratio and high speed stall, meaning a very long approach.

Have you tried this before? Anything I could to make it better?


Views: 2803

Comment by Ben Carson on February 12, 2014 at 6:05pm

I like your idea, I have an fx61 phantom that I have been thinking about adding decelerons for yaw control..

Comment by Mark on February 12, 2014 at 6:28pm

Dude! I love your show but you have to learn how to embed with full screen button enabled.

If idea is to force viewers to go on your youtube - I am not going (don't have time for it) and I am not watching it is small window.

Take you pick, you've lost a viewer or gained one!


Comment by Trent at MyGeekShow on February 12, 2014 at 6:42pm

Ben: Cool! Let me know how your testing goes! I'd love to learn from you.

Mark: All embedded youtube players have a full screen option (see picture below). Its not something I can select. You can view the video here or on YouTube, it doesn't affect me in anyway. What device or OS are you using that doesn't allow full screen? I've just tested this page with: Chrome OS, iOS 7, Windows 7 and 8, Mac OSX 10.5, 10.6, Chrome, Safari, Mozilla, and Internet Explorer, and all of them allow me to use full screen.

Comment by Mark on February 12, 2014 at 7:11pm

I am on Mac OS X 10.8.5 and full screen works on any other posts and for whatever reason never with My Geek Show.

I know there is an option on YT to prevent people from embedding and I thought there is an option to prevent embedded video from viewing in full screen.

I love your show, but I always have to click on YouTube logo to see it in full screen there. 

Here is an idea for air brakes (just an idea, since I have never tested it myself) - since you're using two servos anyway - why not do a split control surfaces like ailerons on A-10 Thunderbolt. They split and used as an airbrakes.

Comment by Eli Cohen on February 13, 2014 at 6:20am
You can do all the mixing via ardupilot. Slave all 4 servos to rudder. Restrict the pwm range to only allow them to go either up or down as needed. Change the gains to either plus or minus one to get the correct ones to move and voila! No mixing via tx
Comment by Alexander Malikov on February 13, 2014 at 7:33am

Comment by Trent at MyGeekShow on February 13, 2014 at 7:43am

Mark: Strange, I've always just used what YouTube provides, which has: allowfullscreen="true" 

Eli: You sure can! You can do this: https://code.google.com/p/ardupilot-mega/wiki/Dspoiler as well...

Alex: Yeah, I see that as well, not sure why it does that. The code I paste into the blog editor has allowfullscreen="true" I'll see if I can edit it. Strange! It works for me just fine...

Comment by Trent at MyGeekShow on February 13, 2014 at 8:07am

Try fullscreen now, I've changed the html to allowfullscreen="true" 

Comment by Alexander Malikov on February 13, 2014 at 8:24am

Sorry, I don't see any changes...

Comment by Trent at MyGeekShow on February 13, 2014 at 8:29am

Well darn. Moderators! Do you know why this is happening? I've submitted a full screen true and something is automatically turning it to false...


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