Gender
Male
About
Location
Bucharest
Please tell us a bit about your UAV interest
I'm interested in robot navigation in general, not only uav
Hometown:
Bucharest
Activity Feed
"It should work
Other methods may be:
- fixed magnetometer - pivoting magnet in the center.
- ultrasound sensor measuring distance between one arm and the ground..
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And if it's slightly off-balanced you can try to spare one…"
Other methods may be:
- fixed magnetometer - pivoting magnet in the center.
- ultrasound sensor measuring distance between one arm and the ground..
-------------
And if it's slightly off-balanced you can try to spare one…"
"Hi Geddes, if you have acces to google drive, I uploaded there a few movies to illustrate the above windvane mechanics.
https://drive.google.com/file/d/0B1udbEguLYNuNkgwdDVSak9DTDg/view?u..."
https://drive.google.com/file/d/0B1udbEguLYNuNkgwdDVSak9DTDg/view?u..."
"I found these scale drawings from one manufacturer of horizontal axis wind vane to servo-oar steering systems. It seems the sizes of the oar and wind vane are quite close to each other.
Since the servo oar behaves in water just like a balanced…"
Since the servo oar behaves in water just like a balanced…"
"here are two possibilities to transfer this vertical movement to the rudder tab. These parts are below the articulated screw that detaches rudder rotation from windvane rotation while allow push-pull vertical forces.
The first idea is the same as…"
The first idea is the same as…"
"and here is the left-right movement of the wind flap
crank is pushed down:
crank is pulled up:"
crank is pushed down:
crank is pulled up:"
"sorry the image is so big, I halfed it but still big..
Now follows the bottom of the vertical shaft, just an idea about how vertical movement allowing horisontal rotation of the part that gets attached to the rudder. It needs to be exactly above…"
Now follows the bottom of the vertical shaft, just an idea about how vertical movement allowing horisontal rotation of the part that gets attached to the rudder. It needs to be exactly above…"
"here-s a take on understanding horizontal axis wind vane pilot. There-s the yellow wing, its vertical push-pull crank system, fixed to a rotating drum ( this one should be rotated 360 deg by an actuator to change sail direction), a (whitish) holding…"
"Here-s a nice transatlantic attempt of a solar roboat
https://www.youtube.com/watch?v=X7DLqQlfMp8
The site http://gotransat.com shows a lot of info - includes tracking data, hull building.
They found a lot of local sponsors too.
Even being much…"
https://www.youtube.com/watch?v=X7DLqQlfMp8
The site http://gotransat.com shows a lot of info - includes tracking data, hull building.
They found a lot of local sponsors too.
Even being much…"
"Regarding foam cutting, you can source the nichrome wire on ebay http://www.ebay.com/bhp/foam-cutting-wire
I've seen some are using guitar strings instead of nichrome.
When I built mine I found harder to source a 300watts transformer, that lowers…"
I've seen some are using guitar strings instead of nichrome.
When I built mine I found harder to source a 300watts transformer, that lowers…"
"regarding the question you asked on http://engineering.stackexchange.com
The simplest self-locking rotating actuator is one that uses a worm gear, like windshield wiper motor does. If that is too strong for rotating only the wind vane mast, there…"
The simplest self-locking rotating actuator is one that uses a worm gear, like windshield wiper motor does. If that is too strong for rotating only the wind vane mast, there…"
"Regarding Ceconite - it in itself is woven polyester. Of course UV can degrade it and water pass through if it werent a resin (or dope) and paint applied to it. The resin seals it and the paint protects agains UV. The polyester fabric itself isnt…"
"looking into wing coverings, I found polyester fabrics very similar with those used in (ultra)light aircraft. There is Sig Koverall http://www.sigmfg.com/cgi-bin/dpsmart.exe/ProductsV6.html?L+Sig+rsx...
Used in large scale rc models.
And a bit…"
Used in large scale rc models.
And a bit…"
"It starts to look like a proa :) The tail vane, made of transparent polycarbonate is barely visible. It has a red trailing edge.prouta17feb2.jpg"
"Here-s a document about designing a rudder trim tab http://www.svsarana.com/selfsteering%20gear/sarana%20trim%20tab.pdf
It is not attached to the leading edge, but farther aft like an airplaine's horizontal tail instead. Much more effective since…"
It is not attached to the leading edge, but farther aft like an airplaine's horizontal tail instead. Much more effective since…"
"whatever method is used to rotate the rudder (or windvane) there is still needed a method to read its actual position.
An encoder.
One method is to have the encoder on the motor shaft (or the screw shaft like they use on tiller-pilots), and…"
An encoder.
One method is to have the encoder on the motor shaft (or the screw shaft like they use on tiller-pilots), and…"
"here-s a page with info about DIY wind-vane. I guess the expensive ones are anyway sized for much bigger boats.
http://www.faymarine.com/plansite/fay_marine_yacht_pl.htm
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In one of the variants, the wind vane moves a…"
http://www.faymarine.com/plansite/fay_marine_yacht_pl.htm
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In one of the variants, the wind vane moves a…"
