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Stealth Plasma on Su-32


Russia is believed to be continuing its pioneering work on the development of a plasma cloud generator to provide active stealth protection for combat aircraft. Details are sparse but the Keldysh Research Institute, under then leadership of Anatoly Korotoyev, is known to have developed a plasma generator weighing around 220lb (100kg), suitable for installation on a tactical fighter aircraft. This has been tested on models and on real aircraft, with the Su-32/34 strike fighter believed to be the first combat aircraft to incorporate the system in its airframe. In essence, the system requires an energy source on the aircraft to energise the surrounding air, most probably at the leading edges of the aerodynamic surfaces, causing ionised air in the boundary layer to flow around the airframe, shrouding it in an impenetrable radar screening cloud. Unfortunately, the power requirement for the generator is high and the system would probably only be activated when an enemy radar is detected. The presence of the 'cloud' around the aircraft would also block transmissions from the aircraft being protected, but it is possible that appropriate gaps in the 'cloud' could also be created to overcome this. The high power generation requirement and additional weight of the system is probably easier handled by the Su-32 than by smaller fighters, such as the MiG-29.


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Russians offer radical stealth device for export

"A Russian scientific research organisation is to offer for export a 'bolt-on' stealth device that it claims renders non-stealthy aircraft practically invisible to radar. The system, which envelops the aircraft in a cloak of ionised gas known as a plasma, is said to be fully developed, with work on a "third-generation visibility-reduction system" under way.

Keldysh NITs (Nauchno-Issledovatelskiy Tsentr or Scientific Research Centre) is making the claims. According to its director, Anatoliy Koroteyev, the system weighs less than 100kg and consumes little more than several dozen kW of power.

Given the state of the Russian economy, analysts consider it unlikely that any of NITs' work has been applied to Russian Air Force aircraft. According to Koroteyev, however, the system will soon be offered for export.

By installing the system, a typical aircraft radar cross-section (RCS) might be cut "by more than 100 times", Keldysh NITs officials said. This would be much the same RCS as dedicated US stealth aircraft such as the Lockheed Martin F-117 stealth fighter and the Northrop Grumman B-2 stealth bomber.

The claims are given credence by corroborating information on the status of Russian aerospace plasma research acquired by Jane's Defence Weekly last year. Russian work in the use of plasmas that purported to reduce aircraft drag by as much as 30% was collated by British Aerospace (BAe) in the mid-1990s. BAe has since been trying to verify the Russian claims in experiments carried out jointly with the UK Defence Evaluation and Research Agency (DERA) and the UK Ministry of Defence (JDW 17 June 1998).

One of the spin-offs of 'plasma aerodynamics', Russian officials told BAe, was that it vastly reduced an aircraft's RCS. The absorption of radio waves by plasmas is well known as the communications black-out that a space vehicle encounters on re-entry is caused by the shielding effects of plasma. This builds naturally in front of the spacecraft as it hits the Earth's atmosphere and shocks the air to high temperature.

The same principle applies to the absorption of radar energy. Although the aircraft would appear to glow like a lightbulb, using plasma generators all around the airframe, it would be almost invisible on a radar screen, Russian officials maintain.

In the opinion of designers at Mikoyan and Sukhoi, the expense of all-embracing low-observable technology as applied in the US Air Force's F-117 and B-2 outweighs its effectiveness. Russians prefer to stress the 'balance' achieved in their latest-generation of fighter designs between aerodynamic efficiency and stealth. The Mikoyan 1-44 and Sukhoi S-37 technology demonstrators, both of which have been rolled out in the past 18 months, are supposed to make use of radar-absorbent paint and materials but are short of inherent stealth features.

Keldysh NITs said that "first- and second-" generation plasma-generators had been tested on the ground and in flight. The centre is working on a third-generation system "based on new physical principles", a possible reference to the use of electrostatic energy around an airframe to reduce RCS. Others believe the Russians could be attempting to duplicate secret work under way in the USA to make aircraft invisible to the human eye by using 'smart skins' that mimic their background."

source: Jane's Defence Wekly

Russia Working on Stealth Plasma

Russia is working to develop plasma-cloud-generation technology for stealth applications and achieved highly promising results, reportedly reducing the radar cross-section (RCS) of an aircraft by a factor of 100.

Russian research into plasma generation is spearheaded by a team of scientists led by Anatoliy Korotoyev, director of Keldysh Research Center. The institute has developed a plasma generator weighing only 100 kg, which could easily fit onboard a tactical aircraft. For the system to work, there has to be an energy source on the aircraft that ionizes the surrounding air,probably at the leading surfaces. Since the resulting ions are in the boundary layer of the aircraft, they follow the airflow around the plane. But the system is not without drawbacks. First, the amount of power required is quite high, so it will likely only be activated when an enemy radar is detected. The other is that the plasma also blocks the radar of the aircraft being protected, necessitating holes in the plasma field to look through it.

The plasma generator was tested first on flying models and then on actual aircraft. The new Su-27IB strike aircraft (known in export - certainly without the plasma generator - as the Su-32) utilizes the system and is likely the first production combat aircraft with this critical technology.

Work on plasma generation is not the purview of Russia alone, though. In the US, for example, research in this field is being conducted by Accurate Automation Corporation (Chattanooga, TN) and Old Dominion University (Norfolk, VA). French companies Dassault (Saint-Cloud, France) and Thales (Paris, France) are jointly working in the same area as well. - Michal Fiszer and Jerzy Gruszczynski, Journal of Electronic Defense, June 2002



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>작성자 : 파렌하잇
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실험기로 끝났고 양산할 계획은 없다고 들었습니다. 그렇다면은 실패란 소리인가요? 기대 이하의 기능을 가진 기체인지......
>어찌되었든 간에 러시아제 스텔스 전투기라니까 관심을 고조시킬만 한것임에는 분명합니다.그리고 기하학적인 전진익기 형상에다가 말이지요.
>구 소련제 방공망을 갖춘 국가들의 영공을 휘저으면서 미국제 스텔스기들이 설치고 다닌 만큼 앞으로도 러시아의 스텔스 전투기들이 그렇게 할수 있을까요.
>붙어봐야 알수 있겠지만은 ......... 궁금하네요. 북한에 이들 기체가 만에 하나 단 한대라도 넘어간다면은(비현실적인 가능성없는 예기지만은) 미국이 여러 나라 잡아 족친것처럼 우리도 대책없이 당하는 사태가 일어나진 않을까요.
>우리나라 방공체계로 얼마나 커버가 가능할까요. 누구 아시는 분 없으신가요?>