Martin
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Mission Planner drops connection

Started 3 hours ago 0 Replies

Hi,I am having a bit of trouble with APM 2.5 and MP 1.2.51 (I upgraded from 1.2.50 this afternoon). Yesterday I took my new APM 2.5 out of the box and loaded Arduplane 2.73 firmware. Everything…Continue

Landing on a forest clearing ( or on a short field in general)

Started this discussion. Last reply by Martin Nov 1, 2012. 5 Replies

HiI was presented with the following problem a few days ago: how to precisely land on a forest clearing or a small field.  A conventional landing wouldn't work because the fields are  surrounded by…Continue

Tags: spoilers, flaps, parachute, deep stall landing, short landing

Roll stabilized camera

Started this discussion. Last reply by Martin Oct 16, 2012. 2 Replies

Hello,I'm interested in doing some photomapping and DEM. I'm currently designing a plane for that purpose. Some questions have come up that I haven't been able to find an answer to. Maybe you can…Continue

Tags: roll stabilized camera

 

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Latest Activity

Martin posted a discussion

Mission Planner drops connection

Hi,I am having a bit of trouble with APM 2.5 and MP 1.2.51 (I upgraded from 1.2.50 this afternoon). Yesterday I took my new APM 2.5 out of the box and loaded Arduplane 2.73 firmware. Everything worked great. I could connect and disconnect without any problems.Today I decided to change some settings, but could not because the connection between APM and MP was dropped right after downloading the parameters. Also, the "Connect" button changes from connect-->disconnect-->connect and no live…See More
3 hours ago
0 Comments
Martin commented on Matthew Coleman's blog post Fly-by-polar
"Wayne, ncrit is associated with the ambient disturbances in the flow. The xfoil manual doesn't mention the airfoil surface roughness in this regard. Could you elaborate further on this matter or give a reference?"
May 1
Martin commented on Matthew Coleman's blog post Fly-by-polar
"Are you planning on using a sensor for detecting the AoA?"
Apr 29
Martin replied to Andrew Tridgell's discussion ArduPlane 2.71 released
"You're kinda answering your own question. It's showing AS because it's ESTIMATING the wind speed. Here's the description of the algorithm --> http://gentlenav.googlecode.com/files/WindEstimation.pdf"
Apr 17
Martin replied to tech in the present's discussion new UAV designing help
"Use magnets."
Mar 28
Martin replied to William Hay's discussion Uav for commercial use/surveying
"Please specify the purpose of the aircraft. Reading your post I can't even figure out if you want to build a copter or a plane."
Mar 28
Martin replied to John M. Smith's discussion Making a Patch antenna for a Fixed wing airframe.
"You can have many directional antennas and a diversity controller that switches between them. Also, the antennas don't have to be directional at all. Oner could also use a meandering dipole."
Mar 14
Martin replied to John M. Smith's discussion Making a Patch antenna for a Fixed wing airframe.
"I looked into this subject some time ago. I read some papers on making an carbon antenna.  It worked, but the downside was that the antenna had very high resistance. You can google the words "uav conformal antenna". This is the most…"
Mar 13
Martin commented on wayne garris's blog post Proposal to merge XFLR5 and PX4
"http://www.rcgroups.com/forums/showpost.php?p=4139374&postcount=2"
Feb 23
Martin commented on wayne garris's blog post Proposal to merge XFLR5 and PX4
"Somehow that also slipped my mind."
Feb 23
Martin commented on wayne garris's blog post Proposal to merge XFLR5 and PX4
"I forgot that the IMU offset from the CG would also have to be taken into account when calculating the AOA."
Feb 23
Martin commented on wayne garris's blog post Proposal to merge XFLR5 and PX4
"Doesn't AOA=Pitch+Decalage+-IMU mount angle? Why is there a need for a vane? Another thing - XFLR5 grossly underestimates the drag coefficient of the plane. That would also need to be compensated for somehow."
Feb 23
Martin commented on wayne garris's blog post Proposal to merge XFLR5 and PX4
"Take a look at this blog --> http://diydrones.com/profiles/blogs/autonomous-cross-country?xg_source=activity"
Feb 23
Martin commented on Gary McCray's blog post Vibration Control Wiki Section Started for Better or Worse
"I would recommend against using O-rings as suspension. O-rings are not meant to be twisted or stretched like that. That and exposure to the elements will lead to cracking quite quickly."
Feb 16
Martin replied to Jake levenson's discussion Space limited landings? Water, Rock, Coral Rubble
"I wouldn't count on catching the plane by hand. It's not a reliable option. If you would be landing mostly on water then maybe buying/building a seaplane is an option. The plane could also take off from water then."
Feb 7
Martin commented on Janne Mäntyharju's blog post Lesson learned about 3DR ESCs and cold weather
"CorrosionX is a spray (liquid) that deposits a thin film on the surface you are spraying it on. Some people just dump their electronics in jar of that stuff and let ithe excess drip off afterwards. It protects metal against corrosion and is also a…"
Jan 28

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About Me:
Mechatronics student at Tallinn University of Technology.
Tell us a bit about your UAV interest
I am mainly interested in aircraft design.

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