here is a shot of the CFD analysis with XFLR5

some shots of the beta model

I have 20 units available @

new features : 94" wingspan , Flaps , rg-15 airfoil

custom cut EPP with iron on , ultra slick covering material .

Views: 926

Comment by Hamish on November 12, 2010 at 4:52pm
cfd always cool

liking the high aspect ratio, what is this ultra slick material you speak of ?

Comment by crystal garris on November 12, 2010 at 5:10pm
laminating material . sticks to hot wired EPP great and no shrinkage . iron on using the wife's steam iron . used a ir temp sensor and set the iron to ~ 230 deg F . goes on easy and stick extremely well .
Comment by Paul G. on November 12, 2010 at 11:32pm
wing spar is ?

Comment by crystal garris on November 12, 2010 at 11:50pm
@ paul
carbon fiber tube
Comment by Carlito Oliveira on November 13, 2010 at 4:53am
Amazing! What's the L/D that you achieved with that platform?
Comment by Paul G. on November 13, 2010 at 12:08pm
very interesting but can you put more details, like wing area etc. little bit worried that your recommending a motor for 900~1400g glider with a stated max weight of 2000g. be good to know what the max prop size is too. how stiff are the control surfaces ? it looks to me like they are hinged with the laminating material and also covered with it ?
Comment by Ron Jacobs on November 13, 2010 at 1:34pm
I like the look of this, but are there any videos of it flying?

Comment by crystal garris on November 13, 2010 at 4:10pm
@ carlito
you can see the performance estimation on the CFD pic . CL/CD = 141.89

@ pual
If you look closely at the numbers at the bottom of the CFD picture you can see all the specs . The motor produces > 4lbs static thrust the plane with a full FPV compliment and plenty of batteries comes in at less the 3.5 lbs . with this set up it will climb vertically . I get ~ 2000 ft per min climb rate although the motor can only withstand this for 20 sec bursts but that is great for climbing to 500' in 15 seconds . the surfaces are stiffer the molded EPP .

@ Ron
here is a video with different wings techpod1.0 . I will be posting new videos of the new wings early next week .
Comment by Hamish on January 25, 2011 at 3:29am
wait doesn't that xflr screenshot show a biiiig forward moment ?

Comment by crystal garris on August 8, 2011 at 1:39pm


here are some more detailed pics of the techpod ready to ship

batter / payload area




pan and tilt mechanism . the camera goes on the front of that piece attached to the servo arm .


motor mount with cowl off


rudder and elevator servos


You need to be a member of DIY Drones to add comments!

Join DIY Drones

© 2019   Created by Chris Anderson.   Powered by

Badges  |  Report an Issue  |  Terms of Service