STEALTH FIGHTER JET

The stealth fighters are the innovative designed fighter who will play major role in future conflict. This fighter is the major part of the airforce  of a country. Many countries of the world tries to developed this fighter and very few among them got this technology while others still tries to developed this fighter in order to strengthened their respective air force.

This kind of  aircraft are designed to avoid detection using a variety of technologies that reduce reflection/emission of radar, infrared, visible light, radio-frequency spectrum, and audio, collectively known as stealth technology

In actual practice there are no aircraft is totally invisible to radar .After the development of the 4th generation fighter aircraft  various country developed their electronics  warfare and avionics in order to make their fighter difficult to detect by enemy. Stealth fighter are typically more expensive to develop and manufacture also this fighter jet is difficult to design in order to minimize the radar cross section also it has many limitation in the field of aerodynamics. But in the modern era in the race of technology countries spend billions of dollar in order to make better fighter than the conventional fighter they have.  stealth aircraft make it more difficult for conventional radar to detect or track the aircraft effectively, increasing the odds of an aircraft successfully avoiding detection by enemy radar and/or avoiding being successfully targeted by radar guided weapons. Stealth is the combination of passive low observable (LO) features and active emitters such as low-probability-of-intercept radars, radios and laser designators. These are usually combined with active measures such as carefully planning all mission maneuvers in order to minimize the aircraft's radar cross section, since common actions such as hard turns or opening bomb bay doors can more than double an otherwise stealthy aircraft's radar return. It is accomplished by using a complex design philosophy to reduce the ability of an opponent's sensors to detect, track, or attack the stealth aircraft.This philosophy also takes into account the heat, sound, and other emissions of the aircraft as these can also be used to locate it.

LIST OF STEALTH AIRCRAFT

In service

United States       F-35 Lightning II – Lockheed Martin / BAE Systems / Northrop Grumman

United States       B-2 Spirit – Northrop Grumman

United States       F-22 Raptor – Lockheed Martin / Boeing

ChinaChengdu    J-20 – Chengdu Aircraft Corporation

Retired

United States       F-117 Nighthawk – Lockheed Martin

Under development

RussiaSukhoi       Su-57 – Sukhoi

IndiaRussia          FGFA – Sukhoi / HAL

China                   Shenyang    J-31 – Shenyang Aircraft Corporation

India                    AMCA – ADA / HAL

Turkey                 TAI TFX – Turkish Aerospace Industries

Iran                      HESA Shafaq – HESA / IAMI

Iran                      IAIO Qaher-313 – Under development

Sweden               Flygsystem 2020 – Saab

Russia                 Mikoyan LMFS – Mikoyan

Russia                 PAK DA – Tupolev

United States      B-21 Raider – Northrop Grumman

China                  Xian H-20 - Xi'an Aircraft Industrial Corporation

South KoreaIndonesia     KAI KF-X - Korea Aerospace Industries / Indonesian Aerospace

Cancelled

Argentina                 FMA SAIA 90 – Multirole fighter

Germany                  MBB Lampyridae – West German stealth fighter prototype

New Zealand            IML Addax – New Zealand multi role fighter prototype

United Kingdom      BAe P.1214 Harrier 2

United States            A-12 Avenger II – McDonnell-Douglas / General Dynamics

United States            Boeing X-32 – Boeing prototype

United States            YF-23 Black Widow II – Northrop / McDonnell Douglas prototype

United States            RAH-66 Comanche – Boeing Sikorsky

Technology demonstrators

United Kingdom       BAE Replica – BAE Systems

United States             YF-22 – Developed into F22 Raptor

United States             YF-23 Black Widow II – Northrop / McDonnell Douglas prototype

United States             Boeing Bird of Prey – Boeing

United States             Have Blue – Lockheed

Japan                         Mitsubishi X-2 – Mitsubishi Heavy Industries

United States             Northrop Tacit Blue – Northrop

Russia                        MiG 1.44 – Russian 5th generation fighter prototype

United States             X-35 – JSF winning contender developed into F-35 Lightning II

United States             X-32 – JSF losing contender

Accidental or secondary function reduced cross section designs

United Kingdom        Avro Vulcan – British strategic bomber with delta wing and buried engines that                                     gave an unplanned low radar cross-section

United States              B-1B Lancer – RCS to about 1.0 m2 

FranceDassault           Rafale – RCS to about 0.20–0.75 m2

United Kingdom         De Havilland Mosquito – Injection molded wood reduced radar detection

United KingdomGermanyItalySpain     Eurofighter Typhoon – RCS to about 0.25–0.75 m2

China                          Chengdu J-10B – Incorporates radar absorbent material

China                          Shenyang J-11 – B variants incorporates radar absorbent materials

China                          Shenyang J-15 – Incorporates radar absorbent material

China                          Shenyang J-16 – Incorporates radar absorbent material

Pakistan                      JF-17 Thunder – Incorporates DSI and Block II variants include radar                                                   absorbent material

United States              F-16C/D and E/F Fighting Falcon – from Block 30 has got reduced RCS to                                           about 1.2m2

United States              F/A-18E/F Super Hornet – The F/A-18E/F's radar cross section was reduced                                         greatly from some aspects, mainly the front and rear. RCS to about 20 dB                                             lower as a F18 C/D

United States              Lockheed SR-71 Blackbird – Skunkworks Blackbirds were first production                                           RCS aircraft; 1962 with CIA A-12, then later with SR-71, YF-12 and M-21                                           Blackbird series of aircraft

United States              McDonnell XP-67 – Blended wing surface reduced radar detection

Russia                         Mikoyan MiG-29K – Due to special coatings Mig-29K radar reflecting surface                                      is 4–5 times smaller than of basic MiG-29. RCS to about 0.60–0.75 m2 

Russia                         Sukhoi  Su-47 – Russian technology demonstrator

Russia                         Tupolev Tu-160M – upgraded bomber with RCS reduction features.

Nazi Germany            Messerschmitt Me 163B – rocket-powered point defence interceptor aircraft.

Poland                        PZL-230 Skorpion

Socialist Federal Republic of Yugoslavia      Novi Avion – Yugoslav prototype, designed to have a                                                                             features to lower its RADAR cross section

India                          HAL Tejas – Incorporates high degree of composites and radar absorbent                                              material and a Y-duct inlet which shields the engine compressor face from                                            probing radar waves.

via:wikipedia

Modernizing To Deter and Defeat Emerging Threats

The F-22 is the world’s most dominant fighter, but potential adversaries continue to develop capabilities intended to challenge the ability of U.S. and allied air forces to gain and maintain air superiority. With that in mind, Lockheed Martin is dedicated to working with the U.S. Air Force on a robust F-22 combat enhancement program to bolster the Raptor’s asymmetric advantage over current and potential adversaries. The capabilities of the F-22 Raptor remain essential to deter and defeat threats and ensure regional and global security well into the future.

Aircraft Specifications

Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 ft / 18.90 m

Height . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  16.67 ft / 5.08 m

Wingspan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44.5 ft / 13.56 m

Wing Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 840 ft2 / 78.04 m2

Horizontal Tail Span. . . . . . . . . . . . . . . . . . . . . . . . . . 29 ft / 8.84 m

Engine Thrust Class. . . . . . . . . . . . . . . . . . . . . 35,000 lb / 15,876 kg

Via:Lockheed martin official website

Us developed this type fighter jet consisting of stealt technology . The F-22 Raptor is one among them .US army deployed this fighter in their air force but the production of this fighter is stopped now because of it`s cost per unit which is about 150million USD . This raptor is the most expensive fighter among the world .

CHINA claims that j-20 fighter jet which in the service of People`s liberation Army (PLA) also have this technology . The cost per unit of this fighter is about 110 million USD.

RUSSIA also testing their 5th generation fighter SU-57 which cost per unit almost 54 million USD  

HAL AMCA, India's fifth generation stealth fighter

India is independently developing a twin-engine fifth-generation supermaneuverable stealth multirole fighter, called the HAL Advanced Medium Combat Aircraft (AMCA). It is being developed and designed by the Aeronautical Development Agency and will be produced by Hindustan Aeronautics Limited. DRDO defines AMCA as a "fifth-generation-plus platform". Unofficial design work on the AMCA began in 2008, while official work started in 2011 and finished in 2014.The first flight is scheduled to occur in 2023–2024.

Mitsubishi X-2 Shinshin

Japan is developing a prototype of a stealth jet fighter called the Mitsubishi X-2 Shinshin, previously referred to as the ATD-X. At the beginning of the twenty-first century, Japan, seeking to replace its aging fleet of fighter aircraft, began making overtures to the United States on the topic of purchasing F-22 fighters for their own forces.

Concept design of the TAI TFX

In 2011 Türk Havacılık ve Uzay Sanayii AŞ (Turkish Aerospace Industries or TAI) initiated a $20 million concept design phase for a fifth-generation air-to-air fighter, TAI TFX. During a State visit of the President of Turkey to Sweden on 13 March 2013, TAI signed an agreement with Sweden's Saab AB to provide design support services to Turkey for the TAI TFX program. TAI has stated that the program will cost $120 billion (with engine development)

Another project of India is the Sukhoi/HAL Fifth Generation Fighter Aircraft (FGFA), which is a fifth-generation jet fighter being developed together by India and Russia. It is a derivative project of the Sukhoi Su-57 being developed for the Russian Air Force. FGFA was the earlier designation for the Indian version, while the combined project is now called the Perspective Multi-Role Fighter (PMF).The completed FGFA will include a total of 43 improvements over the Su-57, including stealth, supercruise, advanced sensors, networking and combat avionics. however the project is already four years due to multiple issue.

IMAGE CREDIT:wikipedia and lockheed martin official website