[OSM-talk] Remote Sensing / DOP / DIY people

[Oleksiy Muzalyev]

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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