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<div class="moz-cite-prefix">Hi Florian,<br>
<br>
The DIY RC aircraft approach has got some other advantages, not
only the initial cost: the plane can be easily repaired, parts may
be reused for another project, one can build a airplane capable to
carry any equipment, etc. Besides, if one learns to build an
airplane one can build about anything.<br>
<br>
The article, which you mention, describes a plane of the so called
pusher configuration [1], with a propeller behind. This
configuration has got some advantages, especially for the FPV
(first person view) flight. However, there is a serious
disadvantage notably for mapping. The pusher configuration is very
noisy because a pusher prop is working in a disturbed airflow,
causing increased vibration and noise. For mapping urban areas it
is very significant<br>
<br>
While with the tractor configuration [2] the propeller works in an
undisturbed air. A tractor electric RPAS airplane can be almost
silent. The disadvantage of a tractor is that the rotating
propeller somewhat obstructs the FPV camera view. After some time
it becomes annoying.<br>
<br>
I plan to build a twin engine RC airplane [3] to see if the
advantage of being silent remains. If it does, then it would be
good both for FPV and mapping.<br>
<br>
I would also like to add a general remark that an airplane has got
one (or two) engines, but the quad-copter has got four. Besides, a
plane can glide. It explains why a fix-wing has better endurance
and range than a multi-rotor.<br>
<br>
[1] <a class="moz-txt-link-freetext" href="https://en.wikipedia.org/wiki/Pusher_configuration">https://en.wikipedia.org/wiki/Pusher_configuration</a><br>
[2] <a class="moz-txt-link-freetext" href="https://en.wikipedia.org/wiki/Tractor_configuration">https://en.wikipedia.org/wiki/Tractor_configuration</a><br>
[3] <a class="moz-txt-link-freetext" href="https://store.flitetest.com/ft-cruiser-speed-build-kit/">https://store.flitetest.com/ft-cruiser-speed-build-kit/</a><br>
<br>
With best regards,<br>
O.<br>
<br>
On 5/31/2018 6:48 PM, Florian Lohoff wrote:<br>
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Hi,
is there a Mailinglist for the Technical aspects of DIY Remote Sensing
e.g. Aerial imaging?
I am talking about Drone/Copter/Autonomous flying like Sensefly Ebee
and the like.
As a lot of people are not capable of buying of the shelve equipment
like the Ebee it might be interesting to get people together with
their DIY projects. Autonomous Fixed Wings could be build in the range
of 300€ - But then IMHO the hard part starts.
Camera, Georeferencing the GeoTIFFs, creating a WMS service to be
able to use them with Josm etc. Getting together an Open Source
toolchain, docker containers, howtos etc
Here is a (German) walk through in building a FPV Wing. We wouldnt need
the FPV parts and this size is most likely not capable of carrying a
camera but its a start.
<a class="moz-txt-link-freetext" href="https://blog.seidel-philipp.de/fpv-wing-aus-kopter-teilen-bauen-mit-inav/">https://blog.seidel-philipp.de/fpv-wing-aus-kopter-teilen-bauen-mit-inav/</a>
For somebody who has dealt with electronics in the past its Buildable
but i am having a hard time getting it actually to fly.
Flo
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