Design, Build, Test, Iterate

Posts Tagged ‘flight’

How to crash gracefully as components melt off your electronics in midair

Actually, I don’t really know how other than to build a tricopter as awesome as mine. Earlier last month, I flew my tricopter up to about 80 feet above the ground to test its range as well as controllability. Due to a shortage of my usual propellers, I had been flying with an oversized tail […]

More flight videos

Ever since I achieved stable flight, I have gone outside for flight testing almost every day for the past week. Check out some videos after the break.

Tricopter controlled flight!

Or, the best one-line bug fix ever. For two months, I had been thinking I was running my flight controller at 166 Hz while actually running it at a measly 31 Hz. I don’t want to go into detail about how that happened, but I have fixed the problem, and now it works. I am […]

Finally, flight!

My tricopter flies! Of course, I mean that very loosely, that it was airborne. Tuning the controller so the craft is actually controllable, however, is a task yet unfinished. In hindsight, my gains were much too low for free flight. Ground effect was therefore much more pronounced, and it took me a few tries before […]

Tricopter not for indoor use (yet)

Last week, I tried flying the tricopter in a larger room across the hall to observe some realistic flight behavior. Unfortunately, at this stage, I’m forced to land the tricopter a second or two after takeoff because the stupid controller feels just fine flying the thing into walls and chair legs. I need to take […]

Tricopter: working PD control

The I gain is zero for now, but basic attitude control works. In the video, I first change the attitude by slowly moving the joystick back and forth. At around 0:43, I move the joystick faster and let go to see how quickly the tricopter can stabilize. The P and D gains are a bit […]

Test rig ideas for autonomous flying vehicles

The OSU Aerial Team uses a rectangular aluminum frame to constrain the movement of our bicopter while we develop our flight controller. While this works, it is a very unnatural way to limit the movements of a flying vehicle. The cage limits 3D motion such that almost any flight stability test goes awry because the […]