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Soviet student/universities projects (MAI, KhAI, etc.)

blackkite

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Hi! MAI-63 and MAI-68.

MAI-63.

MAI-68.
 

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Avimimus

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hesham said:
Link is down, so Archive.org: http://web.archive.org/web/20170204...skokhozyaistvennogo-samoleta-mai-grach-4-sssr

Some interesting information... apparently its structural weight was supposed to be 44% of its takeoff weight?

It seems to have also had an autopilot and possibly even fly-by-wire controls?

Btw. Does anyone have a more detailed 3-view (or larger version of the image Hesham posted)? I'm trying to work out some of the aerodynamic characteristics - but without being able to figure out more about the airfoil, wing incidence, and other details of the layout it is hard to do. A higher resolution image would help somewhat.
 

hesham

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Hi Avimimus,

I think I saw 3-view to it on Internet,but where ?.
 

Avimimus

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hesham said:
Hi Avimimus,

I think I saw 3-view to it on Internet,but where ?.
The upper right hand corner of the image you posted has one. It is just low detail. Any other leads appreciated though (or a higher resolution verison).
 

Richard N

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The original MAI Grach-4 illustration link worked for me and I found that if you opened the illustration in a new window, you got a 1680 X 1085 large image to work with. I enlarged it on my screen and took screen snips of the drawings and have attached them.

I am also interested in the aerodynamic characteristics of the Grach-4 configuration. I build and fly flying wing models and am curious about how the downward shaped multi-segment elevator works. In most tailless aircraft, there is some part of the rear part of the wing that imparts a downward force, like a conventional horizontal tail, to balance the tendency of the forward part of the wing to pitch down.
The Grach-4 seems to have a downward shaped surface that would seem to give an upload instead of a download and would be the opposite of what works on my flying wing models. The elevator is also multi segmented and I was wondering if in level flight the segments are parallel to the flight path or slightly up to create a balancing download force.

I look forward to seeing the results of your analysis.
 

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hesham

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Amazing find,

thank you my dear Richard N.
 

youROKer

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MAI, 1958.
1. Flying jeep. Weight 1200 kilograms.
2. Heavy flying platform. Weight of transported cargo - 40 tons.
 

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hesham

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borovik said:
couple of flying platforms developed under the leadership of I.Bratukhin
Reply #217 http://www.secretprojects.co.uk/forum/index.php/topic,3556.210.html
Thank you my dear Borovik,I remembered that I saw them before,but I didn't know
where.
 

flateric

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OSKBES MAI design bureau 6-seat Aviatika-950 bizjet project - ancestor of Foton design, 1994-1995.
Design by Zhidovecky, Khvan and Goryunov.
 

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hesham

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Wow,amazing find my dear Flateric.
 

paralay

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flateric said:
OSKBES MAI design bureau 6-seat Aviatika-950 bizjet project - ancestor of Foton design, 1994-1995.
Design by Zhidovecky, Khvan and Goryunov.
The company Aviatika had a project with different nose pieces, including for the military. Maybe this is it?
 

Avimimus

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flateric said:
OSKBES MAI design bureau 6-seat Aviatika-950 bizjet project - ancestor of Foton design, 1994-1995.
Design by Zhidovecky, Khvan and Goryunov.
You mention this as an ancestor of Foton. Out of curiosity... did it have boundary layer control at this stage in the program?
 

hesham

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From L+K 5/1974,

a 3-view to Riga-50M.
 

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Cy-27

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In 1994 the MAI published a book by J V Makarov called "Летательные аппараты МАИ " (ISBN 5-7035-0161-X). The Russian language book covered the history (aircraft engine powered boats, gliders, aircraft, submersibles, early UAV's and other equipment) from the MAI.

At the back of this, now dated, book were tables of equipment worked on and produced by the Institute. Many of the aircraft were experimental one-offs.

The first few tables covered aircraft, helicopters and gliders and are attached.
 

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