About

Gender

Male


Please tell us a bit about your UAV interest

I am mainly interested in aircraft design.


Hometown:

WA


Activity Feed

Martin commented on YC's blog post iPad LCD as Displayport monitor
"Similar controllers are widely available. This one is with HDMI input.
http://www.ebay.com/itm/401279236202"
Apr 17, 2017
Martin commented on Joe Renteria's blog post Tilt rotor/SLT hybrid
"Unfortunately the requirements for for forward flight and hovering a very different. For forward flight the thrust needed equals to the the drag of the airframe, which is a lot less then the thrust needed for hovering. It is very inefficient to use…"
Feb 23, 2017
Martin commented on Alex's blog post Nimbus racing drone – full body carbon fiber monocoque on INDIEGOGO
"@earthpatrol, you definitely don't want to leave a naked carbon fibre composite just stting in the sun for a long time. The temperature of the part can easily reach over 100 deg C.
During flight the airflow should be enough to cool the airframe."
Dec 6, 2016
Martin replied to Vincent Diallo-Nort's discussion Drone that can carry 718 grams sensor and be under 2kg
"A Phantom 3 without the gimbal should fit the bill."
Nov 5, 2016
Martin commented on Joe Renteria's blog post Pivotwing VTOL airframe update
"I think Rainer K. might be right about the transition. If the transition happens before the vertical velocity gets too high it might be possible, but the transition should be fairly quick."
Oct 5, 2016
Martin replied to Peter Everett's discussion Pixhawk longevity?
"The failure rate for electronics is high is high at first, then goes down and then goes up again in time.
So, if the flight controller has not failed in the first few months of use you shouldn't have anything to worry about for many years to come.
h…"
Aug 4, 2016
Martin replied to hugo delaroux's discussion Help choosing a drone for mapping 50-200 km² of mountain (2000m to 4000m altitude)
"1. The project is doable.
2. I would suggest using a plane. 50- 200 km^2 is going to take a really long time with a multicopter, especially in the mountains. pix4d is totally ok.
3. You can get away not ground control points if you use an RTK GPS+IM…"
Aug 4, 2016
Martin replied to Tom Moore's discussion V-tail sizing example - but is it correct?
"Here's the article I was talking about, page 13 --> http://www.rcsoaringdigest.com/pdfs/RCSD-2004/RCSD-2004-08.pdf
and also -->
http://ocw.mit.edu/courses/aeronautics-and-astronautics/16-01-unifi...
Use the recommended tail volume coefficients and y…"
Jun 28, 2016
Martin replied to Tom Moore's discussion V-tail sizing example - but is it correct?
"Usually the volume coefficients are used as an input not some percentages of the wing area. There coefficients you arrived seem ok to me, but they really depend upon how you would like the plane to behave. There's an article in the RC Soaring Digest…"
Jun 24, 2016
Martin commented on Hugues's blog post Sony QX10 mod for remote wire shutter trigger
"1/100 shutter speed is not nearly enough. With a canon s100 I can take excellent photos with 1/1000 shutter and IS0 100 on a non-cloudy day. "
Jun 15, 2016
Martin commented on Hugues's blog post Sony QX10 mod for remote wire shutter trigger
"Increasing the ISO is not a very good idea. The sensor is small as it is. Cranking the ISO will make the images very noisy. Your experience only reinforces my point that the camera is not suitable for aerial photography except when you have a vibrat…"
Jun 13, 2016
Martin commented on NiMA Asghari's blog post Airbus Cargo Drone Challenge submission phase ended, here are a few highlights
"Rob had definitely got a point here. Looking at the POD artwork, it seems that the wings have a bit of forward sweep which would move the stable CG region forward compared to an unswept wing. If the wing had >=15 deg of backwards sweep then the curr…"
May 24, 2016
Martin commented on Jose Alberto Soler's blog post Airstring is live on Kickstarter
"From my experience GPRS telemetry and Mission Planner do not get along. There timeouts built into MP are shorter than the latency of the GPRS connection."
May 18, 2016
Martin commented on benbojangles's blog post New Raspberry Pi camera
"@Jesse Millwood,
Could you also take measurements after shielding the ribbon cable with copper (or aluminium) foil/tape?"
Apr 28, 2016
Martin replied to Mark Omo's discussion Inexpensive ready to fly mapping plane in ArduPlane User Group
"Pick something from here --> http://www.hobbyking.com/hobbyking/store/__1182__430__Planes_Parts-...
Almost no building required and you only have to tune Pixhawk once. Even if you pay someone to build and tune the planes it will be cheaper than buyi…"
Apr 27, 2016
Martin commented on benbojangles's blog post New Raspberry Pi camera
"@Randy, the linked product only extends the ribbon cable using an HDMi cable.
Shielding the cable should help a bit. Some RC action cameras using ribbon cables have also had problems with interference. Shielding the cable with copper or aluminium ta…"
Apr 25, 2016
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