"OK, I think I understand now Hai. It's just a substitute for the manufacturer training aspects of the requirement. The remaining CASA requirements must still be met for the issue of an RPL or whatever it's…"
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Andrew Rabbitt
- Male
- Melbourne, Victoria
- Australia
- Blog Posts (9)
- Discussions (61)
- Groups (1)
- Photos (35)
- Photo Albums (6)
- Videos
Andrew Rabbitt's Discussions
Measuring motor speed?
Started Mar 2 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
On-board data logging access without CLI?
Started this discussion. Last reply by Michael Oborne Mar 3. 1 Reply 0 Likes
Now that the CLI has been done away with on Arduplane 2.something-or-other, does anyone know whether on-board data is still being automatically recordered in flash and, if so, how do we access it…Continue
Now that the DIP and Slider switches appear to be redundant...
Started this discussion. Last reply by Andrew Rabbitt Feb 26. 5 Replies 0 Likes
...can I pull off the switch block and wire/configure these ports as outputs to control my HD170 camera by pushing it's buttons via software on the APM?I plan to power the HD170 over its USB port,…Continue
Is it me, or is APM code just really hard to find one's way around?
Started this discussion. Last reply by Andrew Rabbitt Feb 20. 3 Replies 0 Likes
I'm trawling through the APM Arduplane 2.28 code base trying to locate where the PID loops are calculated and hence where the gains applied.I want to be able to implement a density…Continue
Andrew Rabbitt's Page
Latest Activity
"Hai, I dón't wish to wind you up again - it's completely not my intention, however I wish you would read what wrote rather than what you think I wrote.
Tell me, is a certficate 3 qualification a licence? I didn't…"
"What's there to admire about Australia's regulatory system? It is as corrupt, onerous, bureaucratic and incompetent as any other. The fact that UAS regulations appear to be way more advanced/forward than any other is likely…"
"C'mon Monroe! Crack on with that Arduino coding... It's easy peasy! ;)"
"Since you're into Saito's, they also do lovely boxer-twin engines which will be a whole load better balanced than a single cylinder. This is really what you need for UAVs (or a radial...) "
"PS: what does "Valid Payload" mean? What is the MTOW?"
"...for $100 in materials
(and $5000 in tools and equipment!) :)"
"Congratulations Larry! Nice work!"
"Quadcopters generally don't have engines, nor do any electric aircraft.
If they want you to cut your electric motors to zero power, they should say so."
"Thanks Wayne. I knew CFD was computationally intensive, but I didn't realise that they would take that long! I am playing with OpenFOAM to hopefully eventually do some runs on my airframe designs, but so far the…"
"OK, here's some pics of my TowerPro W30A (sorry, not Turnigy) ESC:
Chips on this side are:
ATmega8(L)
three TPCA8003-H FETs
ST662A DC-DC converter
three ST L4941 voltage regulators
FETs here are…"
"Monroe. I have 'decased' a Turnigy ESC and found an AVRl uC on board. Can't remember if it was a 328 or something bigger, but it might be possible to flash an Arduino bootloader into it. Certainly other more powerful programming tools…"
"Nice work Wayne! I hope your flight testing goes well.
Did you do any correlation work between XFLR5 and your CFD work? How well did the XFLR5 calculations you originally did on the old Techpod correlate with the real-life flight…"
Moderatorwayne garris commented on Andrew Rabbitt's blog post Mould Plug CNC Machining for HDwing4
"nice machine here is my home made cnc machine also have a 4 axis hotwire machine .mc9 ? step up to x10 you will get things done way faster . nice work ! also checkout linuxcnc I use a pc to drive my servos or steppers . you can…"
Mo1010427 commented on Andrew Rabbitt's blog post Mould Plug CNC Machining for HDwing4"Andrew,
For CAM software I use PyCAM. While I don't have much experience with the program yet, I have used it a few times to get an idea of how it works. The nice thing is it will pull in 3D models in STL format. This works well for me. I then…"
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
Mould Plug CNC Machining for HDwing4
Posted on May 24, 2012 at 10:03pm 6 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 5 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 16 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…
ContinueAPM-guided High Altitude Glider Drop Simulation in X-plane
Posted on March 1, 2012 at 1:30am 13 Comments 6 Likes
I've been working towards a realistic simulation of my high-altitude return-to-launch glider project in X-plane and this is the latest result which some here might find interesting.
The simulation is running with X-plane 9, APM-MP 1.1.36 (to keep the TAS into APM - more on that later) and a slightly modified…
ContinueComment Wall (1 comment)
- At 6:15am on February 11, 2012,
Paul Marsh said…
Contests
Season Two of the Trust Time Trial (T3) Contest has now begun. The third round was a reliablilty/aerial photography round for both planes and copters, which is now closed. Stay tuned for the next round, beginning soon.A list of all T3 contests is here.
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