WS15 engine completes key test The J-20 will have supersonic cruise capability

2022-07-08 0 By

The J-20 fighter jet is about to have the supersonic cruise capability, it is reported that a domestic engine has completed the supersonic cruise status test on the ground, indicating that the domestic engine development has made a breakthrough, laying a solid foundation for the performance upgrade of the domestic fighter jet.Judging from the description of supersonic cruise, this engine should be the domestic FWS-15 turbofan engine, which is also the supporting engine of J-20 fighter jet.The completion of the ground supersonic cruise status test of THE FWS-15 also means that the J-20 will soon have supersonic cruise capability, and the overall combat capability is a big step forward.Now only the F-22 is capable of supersonic cruise as we all know, supersonic cruise is not the same thing as supersonic flight.The former requires the engines to fly at M1.3 without afterburner, while the latter requires afterburner to fly at supersonic speeds.At present, fighter jets need to consume a lot of fuel to enter supersonic speed, high fuel consumption, short supersonic time, and reduce the combat capability of fighter jets.America’s Air Force, for example, found it difficult to intercept targets such as the Tu-160 because it could not hold out long enough to be thrown aside once it entered supersonic penetration.So the fifth generation fighter aircraft will use supersonic cruise as a technical standard to improve combat capability.Supersonic cruise performance for the fighter aircraft has the following advantages, the first is improved interception capability.The fighter can perform sustained supersonic flight at M1.5 speed without firing afterburner, allowing the aircraft to quickly reach the barrage line and intercept the target.Or quickly follow the target and attack.Fighter jets can go supersonic for long periods of time even when they are at a disadvantage and pull away.Supersonic cruise also extends its weapon delivery envelope, giving the missile greater range and attack area.For airborne weapons, the higher the speed of the aircraft, the greater the initial kinetic energy, the wider the envelope of the weapon.On the other hand, supersonic cruise can also compress the opponent’s weapon range and attack area.This is because the faster the target travels, the more it moves per unit of time, and the more overload the missile needs to hit the target, otherwise it will miss.Supersonic cruise can also improve the stealth ability of aircraft, especially reduce the infrared signature.Supersonic cruise need to turn on afterburner, aircraft infrared characteristics significantly reduced.Enhance penetration capability.Supersonic penetration is mostly at high altitude, with stealth performance, can compress the detection range of the other side, plus can improve the weapon drop distance, can further improve the aircraft penetration and attack ability.Supersonic cruise can improve weapon attack capability of course supersonic penetration for aircraft and engine requirements are very high.The aircraft is required to have excellent aerodynamic performance, and the engine has more than 10 thrust-to-weight ratio, which is extremely difficult.Currently, only f-22 fighter jets have supersonic cruise capability, while Russia’s Su-57 can do so with product 30 engines.The J-20 fighter jet now uses domestic FWS-10 engine, which has relatively insufficient thrust and thrust-to-weight ratio. Only after the replacement of FWS-15 engine can the supersonic cruise capability be achieved.The FWS-15 engine is considered to be equivalent or similar to the American F119 engine, with military thrust of about 10 tons and afterburner thrust of more than 16 tons.The engine uses a series of advanced technologies, such as third-generation single crystal materials, high-temperature powder alloys, integral turbine disks, and the thrust-to-weight ratio of the engine reaches 10, paving the way for the J-20 to have supersonic cruise capability.Now THE FWS-15 has completed the ground supersonic cruise status test, the air test has been or will be conducted, THE J-20 equipped with THE FWS-15 engine, can also carry out supersonic cruise flight, becoming the third fighter with this capability after THE F-22, Su-57 fighter jet.Supersonic cruise requires very high engine for THE J-20 fighter jet equipped with FWS-15 engine, will achieve a complete technical state, namely B state.The OVERALL j-20B will be a leap forward from the existing J-20A fighters, and can fully achieve the goal of defeating f-22 and F-35 fighters in air combat.In fact, the J-20B is equipped with distributed optical Aperture System (DAS), advanced helmet display and PL10E infrared imaging combat air-to-air missile, which also has advantages over the F-22 in target detection and off-axis attack.In the face of rafale, Super Hornet and other four and a half generation fighters, the J-20B with stealth performance, supersonic cruise is like crushing existence.According to the EXPERIENCE of f-22 and F-15 of the U.S. Air Force, stealth fighters can reduce the envelope of medium-range air-to-air missiles by about two-thirds with stealth performance and supersonic cruise when facing non-stealth fighters, and the latter has little chance to attack.It is believed that the J-20B will be put into service by 2025, making it the most capable fighter jet today.