"Why not a quad with just IC engines? OK, so they're a little non-linear, but you've got plenty of MIPS thesedays to sort that little problem out."
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Andrew Rabbitt
- Male
- Melbourne, Victoria
- Australia
- Blog Posts (10)
- Discussions (90)
- Groups (2)
- Photos (46)
- Photo Albums (8)
- Videos
Andrew Rabbitt's Discussions
PPM + additional PWM/frequency inputs? (Sonar + motor speed)
Started this discussion. Last reply by Andrew Rabbitt Feb 22. 1 Reply 0 Likes
OK, so I am the complete empty bottle on this subject, but I want to pose this question to get an idea of how stupid it is...I want to run the LV-EZ0 on my APM1 (Arduplane) as well as the…Continue
PPM with Futaba R617FS?
Started Feb 22 0 Replies 0 Likes
So, I am using the R617FS which I normally connect with PWM inputs for each channel. Some surfing has dug up this mod which…Continue
Skyfun UAV build
Started this discussion. Last reply by Jerry Cresp Mar 11. 8 Replies 0 Likes
Well, after a long time in the theoretical world, I decided it's time to see how APM works in reality, so I splashed some cash and ordered this and a bunch of other parts from Hobby King:…Continue
Measuring motor speed?
Started Mar 2, 2012 0 Replies 0 Likes
I did a search here and via Google, but didn't find anything that jumped out at me, so I ask:Is there any simple method of measuring motor/propellor/rotor speed when using a typical…Continue
Andrew Rabbitt's Page
Latest Activity
"An arrest for such an act sounds more like political overreach than any valid enforcement action. Of course, you can see the thousands of people who were spared potential injury by such an action, can't you...?
Oh, it was just the state…"
"Göran, what's the difference between a foam UAV that weights a kilo or two and a Canada goose that weighs a couple more? The risk from wildlife is an accepted risk for manned flight, even when cruising in the flight levels, and…"
"Also, as far as I understand, the highest ceiling anywhere in Australia for class G is FL180, so this effectively puts a limit on Australian-based altitude record attempts without talking to CASA. (and good luck with that...!)"
"Jason, Google CASR101
My interpretation is based on CASR101.400:
Note though, if it is for purposes other than sport or recreation, then Subpart 101.F applies and it becomes more complicated... "
"Turn your rig through 90° for testing so it doesn't chop your head off when it explodes..."
"I'd be more impressed if Jordi had shaken hands with our Queen Julia, although you can buy lunch with the World's Best Treasurer for a hundred and seventy bucks, perhaps even to talk drones... I'd offer to prepare the lunch for…"
"FWIW, in Australia you can fly your model aircraft as high as you like, as long as you can maintain VLOS and remain in uncontrolled airspace (class G and possible also class E) "
"I tried to use the paperweight on my desk as a drone, but the range and payload were disappointing and the landing speed was a little high."
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Now that Marion is on the international map, Mr Cline should send a bill for services rendered to the Marion city council."
"The irony of ironic ironies is that the photos for this news article were taken with another drone copter... "
"Oh, I see you're Victorian-based too Mario. Would be happy to give you a hand in the above, if you like."
"What's the max C_L you can achieve with this design? Have you flown the prototype at MTOW? What's your stall speed? My theoretical work so far tells me this is the archilles heel of flying wings and will…"
"so, Yamaha has built 2400 of these things for use in Japanease agriculture since the 80s, while the rest of the world pisses about with the regulatory debate..."
"Actually, to be picky, it was Norma Jeane Mortenson who was building the drones... :)"
"I wonder how they convinced the CAA..."
Profile Information
- About Me:
- Mechanical Engineer with more than a decade in electronic engine control development and application in the OEM sphere. I am a lapsed PPL(A) and currently an experimental aircraft builder (Van's RV-8). UAV's are a fascinating diversion from rivetting...
- Tell us a bit about your UAV interest
- Inspired by press articles earlier this year on near-space ballooning, I would like to one day send a UAV glider aloft for a positionable return to land. I'm sure others have similar ideas.
- Hometown:
- Melbourne, Australia (sometimes)
Andrew Rabbitt's Photos
Andrew Rabbitt's Blog
Mercedes Benz vision systems research
Posted on October 4, 2012 at 9:30am 4 Comments 0 Likes
I saw a feature about Mercedes-Benz collision avoidance vision systems research on the Telly here in Germany where I am at the moment.
This particular project uses two cameras to create stereo vision. Comparing the two images is used to detect pixels that represent motion that could be hazardous to the vehicles current path.
Unfortunately,…
ContinueMould Plug CNC Machining for HDwing4
Posted on May 24, 2012 at 10:03pm 5 Comments 7 Likes
Since the topic of CNC mills has raised its head here, I thought I'd share this with the DIYDrones community.
One of the things those who are considering this need to be aware of is that the toolpathing of complex shapes isn't a trivial exercise. I would be interested to know if anyone has experience with any open-source surfacing toolpathing packages - please comment below!
I am fortunate to have access to MasterCAM V9 - old-fashioned as it is - but…
ContinueIntroducing HDwing 4 - my motor-glider for high altitude balloon (HAB) launch
Posted on March 15, 2012 at 5:00pm 16 Comments 6 Likes
Some who have followed my blog posts will know that I have been working on my HDwing design series for a return-to-launch glider concept using ArduPilot Mega. Everything I have revealed so far has been based on relatively conventional flying wing ideas. Till now...
This forward-swept flying wing concept was inspired by the work of Justin Ammon (EdgeRC / birdofprey) that I spotted on…
ContinueSlow Flight with APM - mastering the PID on the edge of stall
Posted on March 13, 2012 at 5:06am 14 Comments 1 Like
One of the features of extreme high altitude flight is the high true airspeeds that are needed to generate the dynamic pressure required for airborne flight. To minimise these extreme speeds for my high altitude glider project, I wanted to increase the flyable operation envelope closer to the airframe's stall speed, helping the reign-in the stratospheric true airspeeds!
As I was playing…
ContinueComment Wall (1 comment)
- At 6:15am on February 11, 2012,
Paul Marsh said…
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