DeHavilland DH.10 - Airco DH-10 - Free flight scale, electric powered twin model WWI bomber. Uses 2x Astro Flight 020 electric motors.
Quote: "I have been experimenting with multiple engine free-flight models for about a year. The main problem has been keeping the engines synchronized through the power phase. There are systems for doing this with gas engines, but most are complicated and not always dependable. Bob Bouchet of Astro-Flight Inc suggested that I use two electric motors wired to a common battery, and this was an excellent solution to the problem and has worked very well.
I chose the "DH-10" for my test bed because of its inherent stability due to the four degrees dihedral and four degrees sweepback of the wings. The large rudder and stabilizer were also helpful. This model is as close to scale as I could find data for, the only thing that isn't documented is the dashboard layout. You will find that the flight is scale-like also. The rollout for takeoff is long, say about 30 feet, then a gradual but positive climb followed by a cruise to the left in about a 50 foot circle. The descent is gradual and the landing is good.
The most fun I've had is having some of the R/C flyers watch it fly and ask me what frequency I'm on. When I tell them it's Free-Flight their eyes almost pop out of their head. But enough of my DH-10 let's start building yours. The first thing to do is to make an aluminum template of the wing rib and of the false rib. Why first? Because while waiting for something to dry, one can cut 5 or 10 ribs and store them away. As you have to make one heck of a lot of wing ribs, this is. a less painful way of doing so..."
Direct submission to Outerzone.
Update 04/06/2017: added article, thanks to RFJ.
Did we get something wrong with this plan? That happens sometimes. Help us make a correction
Do you have a photo you'd like to submit for this page? Then email email@example.com
* Credit field
The Credit field in the Outerzone database is designed to recognise and credit the hard work done in scanning and digitally cleaning these vintage and old timer model aircraft plans to get them into a usable format. Currently, it is also used to credit people simply for uploading the plan to a forum on the internet. Which is not quite the same thing. This will change soon. Probably.
This model plan (like all plans on Outerzone) is supposedly scaled correctly and supposedly will print out nicely at the right size. But that doesn't always happen. If you are about to start building a model plane using this free plan, you are strongly advised to check the scaling very, very carefully before cutting any balsa wood.
© Outerzone, 2011-2018.
All content is free to download for personal use.
For non-personal use and/or publication: plans, photos, excerpts, links etc may be used, provided that full and clear credit is given to Outerzone with appropriate and specific direction to the original content i.e. a direct hyperlink back to the Outerzone source page.
Unauthorized use and/or duplication of this material without express and written permission from this site's owner is strictly prohibited. If we discover that content is being stolen, we will consider filing a formal DMCA notice.