Guys, thank you for invitation!
So about SU 7. Material is foam plastic(one of the tipes) dark blue. it was a slab of 10 cm thickness.
A pair of tubes and rails of carbon...Stationery tape.
Wingspan 850 mm . Length-1400 mm. All-up-weight is not more then 2 000 g.
I used 3 positions of the airplane for 3D model in SolidWorks.
The power plant http://www.velocity-rc.com/cgi-bin/v...ion=show&pid=1
I use 2 Kw motor and equipment suitable for it.
The main task of process was designing of the air channel befor and behind of fan.
You know fan must to recive enough of air.
My fan has over then 2.5 kg of thrust. I wanted to keep this parameter
Please have a look at the process of building in the foto http://forum.rcdesign.ru/f101/thread304403.html
Sorry i dont understand your question very well.
As for air channel befor fan.
In any vertical profile of the channel we have the same area=Intake area(nof FSA).
And under lipo the air channel is changing its form only. However,any vertical profile in this part has the same area=Intake area.
Could you show your MiG21 please?
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