"Looking into it further (but still really just scratching the surface), perhaps the best way to communicate inter-process would be UDP. The flight gear comms are over UDP, which I guess would give me quite a good template. Unfortunately I'd…"
"This looks useful! I'm going to give it a go next week with some airship control software I've written that needs some HIL testing before we try and fly the thing.
I'm not using MAVLink for comms, so I'd have to modify the input…"
"With regards to sonar and cold weather: I know that some sonar devices can be calibrated with a speed of sound value (the SRF02 certainly has that feature), or can be configured to return echo time in uS rather than distance. I guess the speed of…"
"If japan has tried it, you better believe we've done it a few times too, already hehehe. The following is one of the better single-duct uav's ive seen.
private sector project : honeywell's UAV
"Single ducted fan Single ducted fan and a bunch of servos and other moving parts.
Ducted fans in this sense (small highspeed prop in a can) have lower efficiency than large props (ducted or not) - every time you double your RPMs (to generate the…"
"It looks similar in principle with RQ-16 T-Hawk from Honeywell, although by carrying the weight higher it should be more stable. The V-Bat VTOL UAV from MLB is similar in a way (it was featured in the DIY drones podcast also).
These single ducted…"
A UAV developed by the Japanese Ministry of Defence. The video's in Japanese unfortunately, but it does show some interesting concepts that I don't believe have been seen in many drones before.The principle new concept is the single ducted fan that it appears to use. Unfortunately it's covered up in the close ups, but it appears to use thrust vectoring for stability and control. At the end (last 20 seconds or so) there's a video of the vehicle in flight, which clearly shows the four vectoring…See More
"I know it's nitpicky, but it would probably be a good idea to avoid suggesting that hydrogen fuel cells or fuelled vehicles "run on water", as that gives some sort of credibility to the people peddling those devices which supposedly…"
"In further to my previous post, a little bit of research seems to indicate that the yaw servo is there to cancel out the effects of asynchronous thrust, which varies at different engine speeds. That makes sense - sorry for the silly question. Very…"
Please excuse my ignorance of this topic, but why is the yaw sensor needed? Does having three degrees of control not give you three degrees of freedom for rotation? Is it present to make control easier (rather than having to undertake…"
"I made a long post, but based on reading the RCGroups project, his code isn't based on yours. I wouldn't be surprised if it's influenced by your source, but it's not based on that codebase, and so a DMCA takedown notice probably…"
A UAV developed by the Japanese Ministry of Defence. The video's in Japanese unfortunately, but it does show some interesting concepts that I don't believe have been seen in many drones before.
The principle new concept is the single ducted fan that it appears to use. Unfortunately it's covered up in the close ups, but it appears to use thrust vectoring for stability and control. At the end (last 20 seconds or so) there's a video of the…