My buddy Sean who makes the Aerotestra quadcopter told me I should post my new project here on DIY Drones because people would like seeing it...I am assembling a coaxial tube shaped waterproof drone…Continue
"It didn't go very far. I built a few flying skeletal versions but did not develop it any further.
It would be a neat project, but I'm extremely involved with a far more interesting project right now."
"I made this very quick rough mockup of the general layout. Luckily there are few components to a coaxial copter. The control vanes will be in the lower main body as the airflow will travel through the entire center of the craft. Using some deep…"
"Hmm yeah they probably would want some royalties on that.
I wonder if the uninterrupted airflow from a gimbaled setup might offset the weight? I think if you kept the rotational axies (sp?) centered between the two rotors it would require very…"
"It would be necessary to have a contract with Disney / Lucasfilm since it's their material. But it is certainly something I've given thought to.
That's a good idea using a gimbal. But I think the added weight and complexity…"
"Testing went well. The unit flew, although a bit unstable at times.
I was able to gather enough data to start the creation of the final airframe that the Probe Droid will be based on. The inner duct, motor mount, and battery tray will be made…"
"So it barely flies...which is what I expected given the weight. I tried to run a tether from the tip cone to suspend the drone for flight testing, but it adversely effects the unit. So I'll try to assemble a super simple outrigger landing gear."
"Yes...you are very correct. In fact I think there is a good chance the control vanes will break off during the first few flights. But I can always increase their thickness to deal with this. You're also correct about the excess load on the…"
"Nice! What I meant by inverting the control planes was moving the pivot point to the leading (upper) edge. It looks like you have it setup for the trailing edge now and I would think that tend to put excessive load on the servo and encourage the…"
"Very good...! 1 million points for you. Yes, I am going to duct the props. The motor/prop assembly will be situated in the 'head' of the Droid. The 'body' of the droid will also be part of the duct. It will be made entirely from…"
"Very cool man! How will this arrangement fit into the probe droid body? Are you thinking something along the lines of a ducted fan setup drawing through the vertical axis of the body? Also, I am wondering if it wouldnt be better to invert the…"
"Yes, the test rig is not finished yet. I'll be machining the final pieces tomorrow morning. And yes, it is heavy. But it is a test assembly only. I wrote the cnc code last night and machined the pieces this morning.
The second control vane is…"