Hi Florian,

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.


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

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.

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.

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.

[1] https://en.wikipedia.org/wiki/Pusher_configuration
[2] https://en.wikipedia.org/wiki/Tractor_configuration
[3] https://store.flitetest.com/ft-cruiser-speed-build-kit/

With best regards,
O.

On 5/31/2018 6:48 PM, Florian Lohoff wrote:
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.

https://blog.seidel-philipp.de/fpv-wing-aus-kopter-teilen-bauen-mit-inav/


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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