According to the United States " Hang Yu daily " will report on November 2, company of general and electric He Puhui obtained the United States overbalance of 680 million dollar demonstrate test and verify to change contract of circular battleplan engine. Air force hopes these two companies continue to perfect " get used to engine technology to develop oneself " project, the combustion efficiency through raising engine substantially, raise engine thrust and plane range substantially, production gives the 6th generation to fight the engine that plane place needs.
Plane of the 4th generation, the Five Dynasties reachs legitimate people exclaim when the outstanding performance of its engine, the 6th actin satin pjs for woman g engine of American is about to come out.
spring poolThe 6th acting engine has milepost sense to promoting a plane property in the round
Long-term since, the United States is certain advanced weaponry is warlike victory or defeat " conclusive " element, pay attention to the research and development of technology of advanced military affairs very consequently. In recent years, because the country such as Russia develops opportunity for combat of the Five Dynasties and system of advanced air defence energetically, the U.S. Army is forecasted, to this century 20 time metaphase, the United States will lose the air battle dominant position to Russia.
Stem from this kind of consideration, american army is resolved: Halt the production of F-22 of opportunity for combat of the Five Dynasties, use fund at the development of the 6th acting opportunity for combat. The purpose is the foremost edge that makes he is in aviation technology from beginning to end, preserve acting to the plane of potential enemy difference, ensure American sky is medium advantage position.
Notional sex studies initial stage of F-22 opportunity for combat onl satin pjs best buy y then at going up century at the beginning of 80 time, the United States turned these concepts into action ability to use 20 old. Experience of this one history makes its realise: Only as soon as possible starts work, ability has the absolute war advantage of pair of potential rival, let adversary dare not start a war to the United States. For this, the United States needs another 20 years to develop the 6th acting opportunity for combat, strive to make its are in 2028~2032 year enlist in army.
Aviation engine is the heart of the plane. Develop the 6th acting battleplan, the engine with urgent corresponding need. For this, the U.S. Army is in early the demonstration that began the 6th acting engine 2006 works. Study according to air force the development of the lab plans, the 6th acting engine divides a phase to have technical research and development in all.
The first phase is developed " get used to general engine technology oneself " (ADVENT) project. By Luoersi Luoyisi company and General Electric Company are assumed, cost 524 million dollar in all, the purpose is the dynamical plant skill that demonstrates the 6th acting battleplan, the main use of this technology is to be next generation inferior bomber of velocity of sound provides power.
This project divides a pace to undertake: The first pace, in 2007~2008 year, the notional exploratory study that has by a definite date one year, initial design gives engine and into travel key the component experiments; The 2nd pace, begin from September 2009, the development that has by a definite date 3 years. Core should wait in fan, compressor and turbine major breakthrough is obtained on the component.
Current, the project task of the first phase is finished basically already, general Electric Company has finished what get used to fan technology oneself to demonstrate experimental job, had the test of first core machine, the nuclear scheming of engine already came true change discharge works, undertook technical test and verify, still will undertake 2013 overall test-drive.
The 2nd phase is " get used to engine technology to develop oneself " (AETD) project. By General Electric Company and Pu Hui the company is assumed, the key is to exceed velocity of sound battleplan provides power. This project begins from 2013, by a definite date 4 years, the plan undertakes annular combustor and high-pressured compressor device experiment before 2015, undertook fan and machine of core machine test and verify experiment accommodative oneself 2016, finish the ground to demonstrate test and verify, undertook 2017 overall the ground experiments.
The U.S. Army thinks, these two projects are in to maintaining the United States the advantage position of engine technology domain is very significant, its meaning as arriving by turbine reaction engine the progress of turbine fan engine, have milepost sense to promoting the property of the plane in the round.
"3 flow path " the technology achieves principle breakthrough
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Tell from the principle, a good aviation turbine engine, its function basically depends on two big fields: Old pressure ratio and high temperature are spent. Increase pressure ratio to be able to increase the pressure of compressor, the gas that makes compressor comes in generates very high pressure. Raising temperature is the temperature before raising turbine, heighten of the temperature in enkindle room. Look from the circumstance of current aviation engine, if do not have the major breakthr 15 pin vga to usb ough of engine principle respect, the space that these two index carry up again is not large.
The 6th acting engine that the United States grinds beforehand has a variety of different kinds, more typical have two kinds: One kind is the new generation engine that is a delegate with General Electric Company. This kind of engine was applied get used to the new technical plan such as general engine technology and principle oneself.
Another kind is be a deleg 12 volt adaptor best buy ate with general benefit firm improve model engine, be improved on the base that already had engine and this kind of engine is become. For example, the PW9000 that general benefit firm develops the 6th acting engine, mix in F135 namely " static clean motivation " develop on base of engine of PW1000 positive drive and come.
But no matter be the engine of which kinds of type, applied change of circular engine get used to the crucial technology such as fan technology oneself, and developed brand-new high-pressured nucleus scheming.
The breakthrough with the 6th acting the majorrest on technical principle engine is " 3 flow path " technology. This technology full name is: Change front but bypass " 3 flow path " framework technology. Engine of traditional eddy fan has core machine and contain way form of two kinds of air current, the 6th acting engine had the 3rd outflow to. the best selling 15 pin vga
The three-ply air current of the flow path outside this by get used to fan to arise oneself, shut outflow to, promotion takes off and can exceed the thrust of phase of velocity of sound; Hit above flow path, can reduce the specific fuel consumption when cruise and leave a blank. In addition, had outflow to, but great the heat management that improves engine and intake duct pressure restore ability, reduce the air current resistance inside engine, improve pneumatic efficiency, reduce installation resistance thereby, increase the power of engine, this can make the plane achieves the high rate of 6 horses conspicuous not only, still can offer extra cooling air for the plane.
5 big characteristics show prospect of happiness of the 6th acting enginedvd discovery
The 6th acting engine is to compare the engine of new generation jet-propelled with at present more advantageous engine, with before engine of the Five Dynasties is compared, the 6th acting engine will appear piece the following 5 big outstanding characteristics:
It is bad news oil little, efficiency is tall. The 6th acting engine is had more the structure of actor, taller into throughput, can realize lower fuel to use up. Its combustion efficiency compares engine of current and newest the Five Dynasties (the F135 engine that F-35 battleplan distributes to install) rise 25% , accordingly, rate of bad news oil is reduced than opportunity for combat of the Five Dynasties 25% .
Bad news oil leads reduce, the add boat time that can increase a plane greatly, bide one's time time, it can make range of subsonic speed plane increases 30% , bide one's time time increases 70% ; Make range of supersonic speed plan 15 pin vga to hdmi e increases 40% , bide one's time time increases 80% . Because use,change circular engine technology, use pattern of fan of eddy of high side road when cruise of plane subsonic speed, eddy gush pattern is used when supersonic speed cruise, widened thereby the working limits of engine, improved the work efficiency of the engine below different flight condition, make the 6th acting plane already can inferior cruise of velocity of sound flies, can undertake 3 ～ again of 6 horses conspicuous exceed cruise of velocity of sound to fly.
2 it is thrust big, weight is light. Compare with engine of the Five Dynasties, the power of the 6th acting engine gets rising substantially, among its thrust (without thrust augmentation thrust) will increase 5% , the biggest thrust increases 10% , working passage rises 30% . It can increase the flight speed of the plane and capacity of high speed sprint further, supersonic speed cruise maintains to fly below the condition that makes the 6th acting airlines is not opening thrust augmentation, shortened the distance falls since the plane.
In the 6th acting engine, the contributive rate of new material will achieve 50% above. "Data start off before the others " the objective law that already became aviation engine development, the 6th acting engine will adopt new material technique, apply single crystal material, hot strong titanium integratedly material of alloy of material of alloy of alloy, hot strong nickel, fireproof alloy, special type, fight corrode a large number of new material such as covering layer, make the w most popular selling 12 volt adaptor eight of engine is reduced greatly, bikeda goes to its hold in esteem 15 ～ 20, and at present the hold in esteem of the most advanced aircraft is compared it is only 10.
3 it is compatibility strong, cost is low. The 6th acting engine is used get used to general engine oneself technology and efficient embedded turbine engine technology, use engine of a kind of core or fiducial engine to be able to derive series engine, in order to satisfy the requirement of different job plane, enlarged the suitable scope of engine consequently, make have good compatibility.
According to U.S. Army tentative idea, the 6th acting engin 15 pin vga best buy e can satisfy the need of ability of the platform in sky of prospective complete pedigree, can assemble already in air force the 6th generation flies on machine, also can assemble in naval F/A-XX on battleplan of the 6th acting supersonic speed, still can use for unmanned bomber. And, the opportunity for combat such as F-35 of the Five Dynasties, F-22 needs to pass only nominal change one's costume or dress can transhipment of through cargo the 6th acting engine.
Because versatility is strong, the economy of the 6th acting engine but endurance will be improved greatly, cost of its research and development and equipment price will be reduced greatly, sexual price is compared also rise subsequently. Forecast according to the U.S. Army, the sexual price of the 6th acting engine is compared will be 2000 10 times of fiducial engine.
4 it is a spare parts little, use is much. The interior of current aviation engine is extremely complex. All sorts of blade, pipeline, spare partses are stuck together almost, make engine gives trouble easily and maintenance is difficult. The 6th acting engine applied change circular engine, get used to the new technology such as engine, new principle oneself, can make full use of punch effect, make engine spare parts decreases 70% , can reduce the installation resistance of engine greatly, raise the dependability of engine and maintainability.
The 6th acting engine is divided outside be being used at providing power, the direction of machine of usable still Yu Fei is controlled. With battleplan hang down end is exemple, hang down end is to assure to fly and have way of the plane when falling stable the important part that operates with direction, but perpendicular and erect giant hang down the nightmare that end is concealed body. The way that face of control of the thrust vector that the 6th acting engine uses motor, pneumatic and compressor lead the implementation plane such as air means is controlled, make the 6th acting plane is become did not hang down the battleplan of end. Of together with engine discharge temperature low, raised the dependability of the plane not only, still improved the concealed body performance of the plane, make the 6th actin the best selling 12 volt adaptor g plane is had low the characteristic that can explore a gender.
5 it is life long, low to flight environment requirement. The 6th generation gets used to engine to have immanent and alterable character oneself, can be compared according to method of different flight conditioning contain and pressure ratio, optimize engine to work, improve its performance, accordingly, can make the plane gets used to the need that flies below a variety of different environments. Enhance the service life that can add engine accordingly to what the environment gets used to ability, for this, the design life of the 6th acting engine compares the U.S. Army airlines of the Five Dynasties adds 1/2 ～ 2/3.
(Writer unit: National defence university)
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