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

blackkite

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Hi! MAI-63 and MAI-68.

MAI-63.
http://www.airwar.ru/enc/glider/mai63.html
http://translate.google.fr/translate?hl=fr&sl=ru&tl=en&u=http%3A%2F%2Fwww.airwar.ru%2Fenc%2Fglider%2Fmai63.html&sandbox=1
https://www.j2mcl-planeurs.net/dbj2mcl/planeurs-machines/planeur-fiche_0int.php?code=1800

MAI-68.
http://xn--80aafy5bs.xn--p1ai/aviamuseum/aviatsiya/sssr/planery/1940-e-1980-e-gody/eksperimentalnyj-planer-mai-68/
http://translate.google.fr/translate?hl=fr&sl=ru&tl=en&u=http%3A%2F%2Fxn--80aafy5bs.xn--p1ai%2Faviamuseum%2Faviatsiya%2Fsssr%2Fplanery%2F1940-e-1980-e-gody%2Feksperimentalnyj-planer-mai-68%2F&sandbox=1
 

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Avimimus

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hesham said:
Hi,


here is anther drawings and a Model for Grach-4.


http://alternathistory.org.ua/proekt-selskokhozyaistvennogo-samoleta-mai-grach-4-sssr
Link is down, so Archive.org: http://web.archive.org/web/20170204143653/http://alternathistory.com/proekt-selskokhozyaistvennogo-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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borovik

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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
 

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.
 

Silencer1

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And four unusual aircraft models, from the MAI museum - http://www.secretprojects.co.uk/forum/index.php/topic,28847.msg303478.html#new
Not sure, if these are "student" project, though
 

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?
 
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