MiG-41: There is no defense against a crowbar

Ace Combat Image
MiG-41, also known as the promising one aviation long-range interception complex (PAK DP) - in open sources on the Internet there are many versions of what this combat vehicle will look like. The range of assumptions starts from the fact that the MiG-41 program has long been curtailed, to the development of some kind of aerospace fighter capable of entering Earth orbit.
Today we will not talk about promising developments that may appear in the distant or medium term - ramjet or detonation engines, radio-optical phased antenna arrays (ROFAR), hypersonic speeds and orbital entry, but we will focus on what the existing and expected capabilities of our industry, in particular RSK MiG as a company inheriting the traditions of the A. I. Mikoyan Design Bureau, allow us to implement.
Why RSC MiG?
At least because the MiG-31 was created by the A. I. Mikoyan Design Bureau, and in terms of the PAK DP, all open sources say that the promising long-range interceptor is being developed by the RSC MiG company. In addition, the author would very much like for our country to have internal competition in the matter of creating tactical combat aviation, at least between two design bureaus.

The proposed appearance of the PAK DP of the RSC MiG company, Project 701 with a takeoff weight of about 70 tons
On the other hand, the situation with the MiG-35, which, apparently, was not in demand, requires considering the option that RSK MiG will no longer be able to “pull” the MiG-41 in any capacity, so it is possible that the “successor” to the MiG-31, if it appears at all, will be made by JSC Sukhoi Company, however, this is a topic for a separate conversation.
In the previous article From MiG-31 to MiG-41: goals and objectives of a promising combat vehicle We talked about the fact that for the promising multifunctional fighter-interceptor MiG-41 there are a number of tasks that may be beyond the capabilities of such combat vehicles as the multifunctional heavy fighter of the fifth generation Su-57 and the promising multifunctional light fighter Su-75.

Render of the Su-75. Image – Rostec State Corporation press service
The MiG-41 can presumably solve the following tasks:
- destruction of high-altitude supersonic and hypersonic, manned and unmanned reconnaissance and strike systems;
- interception of hypersonic missiles from combat alert mode in the air;
- destruction at long and ultra-long range of particularly important air targets, such as airborne early warning and control (AEW&C) aircraft, refueling aircraft, reconnaissance aircraft, anti-submarine aircraft, and strategic bombers;
- use of anti-satellite weapons and delivery of payload to low Earth orbit (LEO);
- use as a first stage for launching existing and future hypersonic missiles.
Another important factor in the creation of the PAK DP is time.
How much longer can MiG-31 aircraft continue to serve? According to open data on the Internet, the service life of the MiG-31 airframe can be extended to a maximum of 40 years, and given that this aircraft was taken out of production in 1994, all MiG-2034 aircraft should be decommissioned in 31.
Which aviation complex, after the end of the MiG-31 operation, will launch the hypersonic missiles of the Kinzhal complex? Or will it be used to intercept high-speed targets? And for launching air-launched anti-satellite weapons, if the creation of such weapons is completed?
So it turns out that a replacement for the MiG-31 is needed as soon as possible, with the first flight tentatively in 2030 and serial production no later than 2035.
In this article we will consider two variants of the implementation of the multifunctional fighter-interceptor MiG-41, we will call them - basic and advanced, while we will take into account the above-mentioned tasks that it must solve.
The main structural elements of a combat aircraft include:
- glider – fuselage, wings, control surfaces;
- engines – turbojet engines (TRD);
- on-board radio-electronic equipment (avionics).
Strictly speaking, in our version, the MiG-41 is not quite a PAK DP, but rather a multifunctional high-altitude supersonic fighter-interceptor. (yes, almost all tactical combat aircraft are now supersonic, but most of them are capable of going supersonic only for a short time and not for much).
Planer
In the basic version, we start from the airframe of the MiG-25 and MiG-31 aircraft line.

Some may call this a deep modernization of the MiG-31, and perhaps they will be partly right in some ways, but given the volume of proposed modifications, as well as the fact that the aircraft will have to be produced anew, it will in fact be a new combat aircraft.
Yes, this may seem like a step backwards to some, but it is appropriate to recall the American F-15EX. Despite the presence of fifth-generation F-35 fighters in service, being built in huge batches (by modern standards), as well as ongoing work on a sixth-generation fighter, the US Air Force simply went and ordered the newest, most advanced version of the F-15 fighter, which made its first flight back in 1972.
And they clearly don't suffer from self-reflection about what anyone might think. Incidentally, the MiG-25 made its first flight in 1964 – eight years before the F-15, and the MiG-31 first took to the air in 1975.

The F-15 fighter is not much older than the MiG-25, but in a deeply modernized version, the F-15EX is mass-produced for the US Air Force.
There will be no hypersonics or space travel, stealth or super maneuverability (It's strange that anyone would even talk about super-maneuverability in relation to a machine like the PAK DP), but within the framework of the previously outlined tasks, all this is not required.
Why not just upgrade the existing MiG-31 aircraft then?
Because, as we have already said above, in five to ten years the MiG-31 airframes will exhaust their service life and be decommissioned.
It makes no sense to simply restore the production of airframes - during this time, production technologies have changed significantly, other machines and tooling will be used, in addition, given the expected tasks of the MiG-41, the requirements for the airframe will also change - it must be optimized for operation at maximum speeds and at high altitudes. That is, in fact, the airframe of the basic version of the MiG-41 will be closer to the airframe of the original MiG-25 aircraft, of course, taking into account the latest achievements in aerodynamics and the emergence of new structural materials.

MiG-25PU, on which test pilot Alexander Vasilyevich Fedotov set an absolute world altitude record on August 21, 1977 – 37 meters
Some element of the airframe may be made of a modern alloy or other material that can withstand extremely high temperatures, for example, something from the developments implemented during the Energia-Buran program, somewhere a composite element of the structure is installed. Partial or even complete rejection of hydraulic systems in favor of powerful and high-speed electric drives is possible.
It can be assumed that the volume of design improvements during the development of the airframe of the basic version of the MiG-41 will be comparable to what was once carried out during the development of the MiG-31 airframe, based on the MiG-25 airframe.
The airframe of the advanced version of the MiG-41 may be based on the latest known developments of the MiG company.
And here we also have few options.
In February 2000, the prototype MiG-1.44, developed under the MiG-1.42 fifth-generation fighter program, made its first flight. The MiG-1.42/1.44 program was subsequently curtailed, and the Su-57 heavy multirole fighter became the main fifth-generation aircraft in Russia, and it is possible that in the future it will be supplemented by the Su-75 light fighter.

MiG-1.42/1.44
The MiG-1.42/1.44 project used a canard aerodynamic configuration with a canard. This aerodynamic configuration has recently become popular – the French Dassault Rafale, the pan-European Eurofighter Typhoon, the Chinese Chengdu J-20. There is a possibility that even the promising American sixth-generation fighter Boeing F-47 will be made using the canard configuration.

Chengdu J-20 (left) and Boeing F-47 (right)
Open sources mention that the promising multifunctional fighter MiG-1.42/1.44, according to one of the designers, was an “evolved MiG-25” – a high-speed fighter that had “grown up” to a qualitatively new level.
Thus, the advanced version of the MiG-41 may well use the groundwork created during the development of the MiG-1.42/1.44.
Compared to the original design, it will be larger in size and optimized for high-speed flight rather than aerobatic maneuvers. As with the MiG-25/MiG-31 airframe, the design must be highly durable and resistant to high temperatures.
Engine
For the basic version, the option of restoring production of the existing D-30F6 turbojet engines, which are part of the MiG-31, but in a modernized version, can be considered.
In particular, a certain conventional D-30F6M turbojet engine can be modified to include a modern plasma ignition system, a full authority digital control system (FADEC), new single-crystal turbine blades capable of withstanding high temperatures, and the like.

It is possible that the potential for upgrading the D-30F6 turbojet engine is far from exhausted
If the existing D-30F6 turbojet engine produces about 15,5 thousand kgf of thrust in afterburner, then from the modernized D-30F6M turbojet engine one can quite easily expect figures at the level of 17-18 thousand kgf.
Accordingly, if we are considering an advanced version of the MiG-41, then it may use “product 20” – the AL-41F turbojet engine, developed within the framework of the MiG-1.42/1.44 project.
The AL-41F engine should not be confused with the AL-41F1 turbojet engine, developed on the basis of the AL-31F turbojet engine, as the first stage engine for the Su-57, since the original AL-41F turbojet engine did not fit into the Su-57 in terms of dimensions. The AL-41F turbojet engine should easily fit not only into the advanced version of the MiG-41, but also into the basic version, created on the basis of the modernized MiG-31 airframe, since the prototype of this aircraft engine was tested on the MiG-25 flying laboratory (side 306) with a similar size of engine nacelles.
The maximum speed of the fighter based on the MiG-1.42/1.44 project was to be 2,6 Mach or about 3000 kilometers per hour, which is already close to the speed indicators of the MiG-31, although it is unclear how long this aircraft could maintain it with afterburner. By the way, the MiG-1.42/1.44 prototypes were equipped with heat-resistant glazing of a yellowish tint, which also indirectly indicates that this machine was supposed to be used at high speeds.

Item 20 – AL-41F turbojet engine. Image by @HEMemarian
According to open sources, the AL-41F turbojet engine had a thrust of about 18 thousand kgf back in 2010, and it was assumed that it would ultimately be 21 thousand kgf – it is possible that with the use of modern solutions this parameter can not only be achieved, but also exceeded.
Another option is the "product-30" or the AL-51F turbojet engine, which is being developed for the Su-57 fifth-generation fighter, and most likely for the Su-75. By 2030, the AL-51F turbojet engine will most likely be in serial production. The question here will rather be the ability of our industry to manufacture the required number of these aircraft engines; it is possible that the MiG-41 simply "will not have enough."
We can also recall the R579-300 turbojet engine developed by the Soyuz Scientific and Technical Complex – we previously talked about it in the materials Soviet legacy: fifth generation turbojet engine based on Product 79 и The heart of the aircraft: aircraft engine and technical solutions capable of bringing the promising Russian VTOL aircraft to a new level.
On the one hand, this aircraft engine was supposed to have outstanding characteristics and was considered for equipping fifth-generation fighters, on the other hand, at present there is no information about the continuation of its development, the website of the AMSTK Soyuz openly states that they currently have no relation to the defense industry.

All variants of the MiG-41 turbojet engine will most likely have a nozzle without thrust vector control mechanisms (TVC) – there is no point in wasting resources and increasing the weight of an aircraft that was not originally designed for active maneuvering.
Avionics
The basis of the combat aircraft's avionics is the radar complex (RLK). The RLK for the MiG-41 in any version will most likely be developed anew, after all, the passive phased antenna array (PPAA) technology is already outdated, the confident present and near future are for active phased antenna arrays (APAA) in the CAR (digital antenna array) version or simply DAFA.
Despite the fact that the MiG-41 radar system will be developed anew, it could potentially be based on the Belka radar system, developed for the Su-57 fifth-generation fighter, which in five years will most likely already be well-mastered in production and free of its “childhood” shortcomings.
The larger size of the MiG-41 nose cone, based on the MiG-31 fuselage, will increase the number of transmitting and receiving elements (TRE) by 1,5-2,4 times, which will accordingly increase the efficiency of the radar system as a whole. That is, if the radar canvas of the N0 Belka includes 6 TREs with an antenna size of 1526x700 mm, then the canvas of the prospective MiG-900 radar can include about 41 TREs with an antenna diameter of 2302 mm and about 1100 TREs with an antenna diameter of 3729 mm.

AFAR canvas of the prototype radar N0 "Belka". Image by Allocer
The dimensions of the nose cone of the MiG-41, based on the MiG-1.42/1.44 airframe, are unknown to the author; in addition, they may change during the process of redesigning the airframe for the MiG-41's tasks, so we will conditionally accept them as the same as for the basic version of the MiG-41.
Considering that the basic Belka radar must detect targets with an effective dispersion surface of 1 m2 at a range of up to 400 kilometers, it can be assumed that the promising MiG-41 radar system will be able to detect large targets made without the use of low-visibility technologies, such as AWACS aircraft, refueling aircraft, reconnaissance aircraft, anti-submarine aircraft, as well as strategic bombers, at a range of about 1000 kilometers.
Separately, it is necessary to mention the necessity of installing a highly effective optical-electronic station (OES) on the MiG-41. The enemy can and will reduce the radar visibility of prospective supersonic and hypersonic air attack weapons, but it is practically impossible to hide the airframe and the plume of powerful engines heated by the atmosphere, so that the OES will often be even more important for the MiG-41 than the radar.

Highly efficient OES could become one of the most important elements of the MiG-41
Estimated performance characteristics
Estimated tactical and technical characteristics (TTC) of the MiG-41:
- maximum flight speed with afterburner in the range of 3-4 Mach or 3500-4500 kilometers per hour;
- cruising supersonic speed without using afterburner is about 1,5-2 Mach;
- practical ceiling of about 25 kilometers and dynamic ceiling of about 35 kilometers;
- flight range in the range of 3000-4000 kilometers at subsonic speed at high altitude;
- two turbojet engines with a thrust of 18-21 thousand kgf each;
- a load capacity of about 8-12 tons, with the ability to place a large-sized massive single-cargo under the fuselage (anti-satellite missile or hypersonic air-to-ground missile) or two massive cargo under the wings, on pylons closest to the fuselage (ultra-long-range air-to-air missiles);
- maximum take-off weight is about 40-45 tons;
- the detection range of a target such as an “AEW and CAS aircraft” or a transport aircraft using a radar is about 1000 kilometers, and a target such as a “4th generation fighter” is about 500-600 kilometers;
- expected production series – 100-150 units.
Conclusions
Surely, some research work is being carried out in Russian design bureaus to create a PAK DP in the form that is fantasized about on the Internet - with detonation engines, with hypersonic flight speed, low-noise, with the ability to almost go into near space.
The question is, when could such a machine be created? First flight in 2040? Or in 2050?

By 2035, we need to fill the niche that will become vacant after the end of the MiG-31's service life, since there is nothing else to solve a number of the tasks that this machine can solve.
The considered options for creating the MiG-41 on the basis of the existing MiG-31 interceptor fighter and the groundwork left after the development of the MiG-1.42/1.44 project are quite capable of solving the problems of destroying high-altitude supersonic and hypersonic targets, destroying especially important air targets at long and ultra-long ranges, using anti-satellite weapons and launching hypersonic air-to-ground missiles.
The promising MiG-41 long-range interception aircraft complex, based on the MiG-25/31 and the MiG-1.42/1.44 project, is an opportunity to relatively simply and quickly fill the niche that will form after the “departure” of the MiG-31.
This MiG-41 is not about stealth and super-maneuverability, not about network-centricity and loyal wingmen, no - it is a highly specialized means for solving a specific list of tasks that we have considered earlier. As they say, "The rhinoceros has poor eyesight, but given its size and weight, this is a problem for those around it».
Now, when a MiG-31 takes off, an air raid alarm is announced all over Ukraine. The same thing should happen when a MiG-41 takes off, only not only ground targets will "run away", but also air ones. This should be the same crowbar against which there is no reception, and it does not matter what century's technology it is based on - a crowbar is a crowbar.

Paint it radical black - it will be cooler...
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