MiG MFI / I-90 - MiG 1.44 / MiG 1.42

The operational version (1.42) was to have the different, wedge shaped ventral intake, as shown earlier in this thread.
 
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Empire said:
I mean the soviets had many spies in the West German aerospace industry in the 80's and 90's they probably had the information on how to lower the RCS of the intake if they already didn't know how to do it themselves.
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Knowing how to lower RCS in principle doesn't take spies - it simply takes professionals in this field, supported with necessary level of fundamental science and computing power. Soviet Union (hence early Russian Federation) easily had all 3.
It isn't like principles of radio wave propagation are a mystery hidden on open forums, unavailable to anyone else.

Particular technologies and engineering solutions may (and always will) be borrowed when suitable, but this happens on a far "lower" level than internet discussions typically touch.

kaiserbill said:
The operational version (1.42) was to have the different, wedge shaped ventral intake, as shown earlier in this thread.
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While 1.42 was intended operational variant, it wasn't where this design ended. This model matches rumors on 1.46 pretty well, for example.
 
kaiserbill said:
The operational version (1.42) was to have the different, wedge shaped ventral intake, as shown earlier in this thread.
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Yes the euro fighter intake has a wedge shaped ventral in the intake. picture #1
Why is the wedge in picture 2 so thick and why dose it extend so far forward seems to serve no purpose. In a turn looks like it would distort the airflow into the inlet its so far forward. Not to mention a certain degree off the nose it becomes a radar trap. Thats just my feeling on it i'm sure i'm way off. lol

I got this from a russian article by Viktor MARKOVSKY : aircraft (i.44) is equipped with a ventral air intake, divided into two sections (each serves its own engine). The air intakes have an upper adjustable horizontal wedge and a lower tilt lip for smooth inlet flow control (the F-22 is equipped with non-adjustable, two-stroke air inlets optimized for supersonic operation). The design of the entrance device provided for 1.42 features side bevels and a vertical central wedge, which are more advantageous in terms of stealth.
 

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01/16/1989 By the decree of the Central Committee of the CPSU and the Council of Ministers of the USSR, on the basis of the branch research laboratories of the Kharkov Aviation Institute AGD-3 and ONIL-3, the Research Institute for the Problems of Physical Modeling of Aircraft Flight Modes (NII PFM KhAI) was established. Before the creation of the scientific research institute, the collectives of the KhAI laboratories had to go through a long and difficult path of recognition and proof of the relevance of the methodology they had mastered for researching new aviation technology using dynamically similar large-scale flying models. The first flights on the LL-17 flying laboratory in 1973 should be considered the beginning of work on the study of non-stationary flight regimes of aircraft on flying models.A report on their results was sent to the USSR Ministry of Aviation Industry and the country's aviation design bureaus with a proposal to use physical modeling on models of new aircraft created by them. Interested in the proposal of the OKB im. ON. Sukhoi and OKB im. A.I. Mikoyan, but if the first is active, then the second, at first, in the role of an observer. OKB im. ON. Sukhoi handed over to KhAI a model of the Su-7B aircraft on a scale of 1: 5 as a surface standard and, on an initiative basis, the KhAI began to work on the design and construction of a dynamically similar model of this aircraft. The general management was headed by O.R. Cheranovsky, and for the implementation of the project several groups were organized, led by S.A. Yashin, V.D. Bely and N.G. Shirt. The model project was based on S.A. Yashin. Customers helped with some materials and components. In the process of work, new materials, technologies, approaches were developed and introduced. For 1974-75. two models of the Su-7B aircraft were built, on which the Su-7B aircraft performed 12 flights. The characteristics of the model obtained in these flights completely coincided with the aerodynamic characteristics of the aircraft, which made it possible to proceed to research on models of new aircraft created in the country. At the end of 1978, the branch laboratory ONIL-3 was created at the KhAI to study combat fighters created by the OKB im. ON. Sukhoi and OKB im. A.I. Mikoyan. The head of work for the OKB im. ON. Sukhoi was appointed S.A. Yashin, according to the OKB them. A.I. Mikoyan - V.D. White. Intensive work began on researching the Su-27 and MiG-29 aircraft, fine-tuning the structure in order to obtain the best aerodynamic characteristics. When creating the Su-27 and Su-35 aircraft, 55 were performed on large-scale flying models! design changes and improvements with subsequent verification of their feasibility and effectiveness in the flight experiment. You can imagine what a huge amount of money would have to be invested if all these improvements were carried out on the plane, and not on the models. The MiG-29 aircraft and its flying model This is a joint work of specialists from the OKB im. ON. Sukhoi, OKB im. A.I. Mikoyan, Kharkiv Aviation Institute, TsAGI and Flight Research Institute. MM. Gromova gave the country the world's best Su-27 and MiG-29 fighters. By the way, the famous aerobatics figure "Pugachev's Cobra" was first performed on the MiG-29 model in the study of the super-maneuverability of the aircraft, and then performed on the Su-27 aircraft by test pilot V.G. Pugachev. Under the leadership of A.I. Ryzhenko, on the Su-7B models, work was carried out to study the flutter, as well as the survivability of the aircraft during combat damage. In 1986, the staff of the laboratory was increased, and the KhAI received an order to work with the EMZ named after V.I. V.M. Myasishchev on the M-55 high-altitude aircraft, these works The start of the Su-27 aircraft model was headed by V.A. Yatsenko. In 1987, a model of the M-55 aircraft was built, on which flight tests were carried out until 1993. On the model, the modes of stall and spin of the aircraft were investigated with the provision of similar deformations of the bearing surfaces. As a result of flight studies, the boundaries of the beginning of the stall of the aircraft were determined, the values of the angle of attack of the M-55 "Geophysics" aircraft permissible in operation were clarified, and the methods for getting the aircraft out of a spin were worked out. One of the models of this aircraft was built using the "Stealth" technology with a special coating to reflect the beams of ground surveillance equipment, it was called the EPR LM-55. 1986-1987 our team has started building large-scale flying models of the aircraft of the future, i.e. to the 5th generation fighter aircraft. Models SLM22, SLM32, DM5.12 were built, on which flight tests were successfully performed. The elimination of the risk to the life of the test pilot, the reduction in the development time of new aircraft and the relative cheapness of the research method using dynamically similar models played a role in determining a leading role in the creation of research institutes. In the future, it was planned to widely introduce this method into the aviation industry and use it in the creation of all types of new aircraft created in the Soviet Union. Giproaviaprom has started designing research and production buildings for the Research Institute of PFM KhAI. All relevant building permits for the buildings have been obtained. Using large-scale flying models, the aerodynamic characteristics of aircraft were investigated: Su-7B, T-10, Su-27, Su27UB, Su-47 (Berkut), KhAI-70, Su-35, MiG-29, MiG-29UB, MiG- 29C, 4 January 2014 1.42, M-55 (Geophysics). In some years, up to 150 people worked at the institute, which indicates the scale of the work being done. And each of the employees made his contribution to our common cause, wherever he worked: design engineer, production worker, laboratory assistant, builder, supplier. They all deserve thanks. For their personal contribution to the development and implementation of research methods for new aviation technology, they were awarded the State Prize of Ukraine: V.D. Bely, A.V. Betin, A.I. Ryzhenko, V.I. Ryabkov, S.N. Sadovnichy, O.R. Cheranovsky, V.A. Yatsenko, S.A. Yashin. Many employees of the institute were awarded with certificates of honor of the USSR Ministry of Aviation Industry. t Unfortunately, due to the collapse of the Soviet Union, all work on the further development of this unique method of researching aviation technology was curtailed. The last tests of the SLM32 model were carrout in 1997. ied It should be said that a similar method of researching new technology in those years was used only in the United States.
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Used AI processing to increase resolution of these tiny pics. Results are variable but SLM-22 pic is quite nice.
 

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Dm 5.12 looks very different from the 1.44 and 1.42, however the model is described as modular like HiMAT was ment to be. The Mig-29 page mentions something similar. I’m curious if that render is actually representative of an MFI design or if it was a placeholder given how secretive the program was. Khai’s website says flights were being done till 1992 when the Mig 1.44 was being built.
 
paralay said:
In 1987, 3D printing did not exist yet
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If it’s a real cad model and you have the whole aircraft, and aerospace engineer could do a CFD study on it. It would be awesome to build a flight model for a flight simulator.
 
paralay said:
The multiparametric "Lamprey" model was made in TsAGI in the early nineties. The MFI MiG 1.42 was already put into production in 1992 - 1994
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Thank you for your answer!

Best regards
 
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paralay said:
The multiparametric "Lamprey" model was made in TsAGI in the early nineties. The MFI MiG 1.42 was already put into production in 1992 - 1994
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My dear Paralay,

actually the development of this beast began in 1989.
 
flateric said:
hesham said:

actually the development of this beast began in 1989.
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source please
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This is one temporarily,but it's not the main source,I know it was
a Russian magazine ?;

Mikoyan MiG 1.42 (1.44) MFI Demonstrator foe Multi-Role Tactical Fighter

Mikoyan MiG 1.42 (1.44) MFI demonstrator for multi-role tactical fighter was developed to counter the threat posed by the ATF programme under which the F-22 was created. Mikoyan claims that the MFI's combination of aerodynamic properties, armament and avionics render it superior to any...
www.military-today.com
 
Seems that you are mixing 1.44 with 1.42
 
Do you see original question? "If Lamprey was related to MFI/1.44/1.42 studies?"
Paralay says no as Lamprey was made and tested in early 90s (and yes, it was so) when production version 1.42 already was in jigs at Sokol plant where Paralay did work then.
You say "actually the development of this beast began in 1989"
Then you say: "it was originated in 1983 and not 1989"
What average forum reader should think? What beast of three did you mean? Because your answer looks like Lamprey was built in 1989 (no, it was not).
 
Unfortunately I have two dates for development and studing the aircraft
(of course I spoke about one design,1.42) in my files,1989 and 1983,and when
check from the book; The Osprey Encyclopedia of Russian Aircraft 1875-1995,
I found the 1983 was right.
 

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Well, I read the MFI section in Yefim Gordon's book on the Su-57 and I don't think it sheds any significant new light on the MFI program. Most of it is straight recycled from his earlier book.

Several pics are taken from this topic, in my opinion. Some pics in the book date back to this 1997 web page I remember very well:

 
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History of a picture. This is from Russian Aviation (1995) edited by A. G. Bratukhin.

RussianAviation.jpg

Clipboard01.png

On P.236 we find this pic "The working section of the T-203 low speed wind tunnel".

In 1997 Alexei Gretchikhine published a speculative webpage on the MFI / 1.42, before it was made public. He included this picture and captions it thus:

"The T-203 low-speed wind tunnel located at Siberian Research Institute of Aviation (SibNIA). All-black scale model mounted in the working section of the tunnel is a twin fin, delta winged aircraft. Note that fins are positioned atop of the twin booms. Aviastroenie Rossii, p. 236."

In PKL 40 Nowe MiG i Su (2000) Yefim Gordon publishes a black and white copy of this pic (unattributed) and captions it as a fifth generation fighter design being tested in SIBNIA's T-203 wind tunnel.

In Red Star 01 - Sukhoi S-37 and Mikoyan MFI (2001) Yefim Gordon prints a black and white copy (unattributed) and labels it

"A Soviet fifth generation fighter undergoing wind tunnel tests at SIBNIA".

In Famous Russian Aircraft : Su-57 (2021) Gordon publishes a grainy cropped image (unattributed) of just the model from this pic and it is captioned:

A still from a video showing a black-painted model of the izdeliye 1.42 suspended upside down in one of TsAGI's wnd tunnels."

So, we have gone from the truth (it is a picture of a model in the T-203 SIBNIA wind tunnel) to a lie (its a still from a video of 1.42 model in TsAGI wind tunnel).

To finish this minor rant, I enhanced the tiny pic bigger using AI software. It looks a lot nicer, but it isn't "genuine" now.
Clipboard01_waifu2x_3x.jpg
 
Then there's this:

MiG1.42g.jpg

According to Alexi Gretchkine in 1997

Another wind tunnel, another scale model. Although it has no connection with 1.42, the model displays some rudimentary stealth features. Note that forward fuselage is triangular in crossection. TsAGI.

In Su-57 book, this picture is captioned by Gordon

A wind tunnel model of the izdeliye 1.42's fuselage with a chin air intake featuring a vertical splitter and vertical airflow comtrol ramps.

Do you believe this now?
 
Updated some dead links with Wayback Machine copies.

The SLM-32 model footage can be seen on Youtube.

View: https://www.youtube.com/watch?v=OE38DdQrzJE


I did an AI enhance on this well-known screencap
8035_waifu2x_3x_png.png

And this is interesting - SLM-22 front fuselage in the background shows interesting intake detail quite similar to the S-22 mockup.

8949_waifu2x_3x_png.png
 
Russia's Air Power at the Crossroads, Chapter 9 (P235) attached.

apps.dtic.mil

Russia's Air Power at the Crossroads,

This report is an assessment of trends and prospects in Russian military aviation. It is based in large measure on the extensive reportage on air power and other military matters that has pervaded the Russian defense literature since the onset of glasnost in 1986. It also benefits from limited...
apps.dtic.mil
 

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It's been sitting there for years now. Surprised it hasn't gone to Monino. The Berkut is around as well, sitting in an overflow area about 420 m southeast of the 1.44.
 

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