When it comes to modern aircraft engines, whether it is a fighter engine or a civilian engine, the FADCE system is one of the most important options. In other words, if you don't have this kind of system, it can't be called a modern engine at all. For example, even non-professionals, as long as they have some knowledge of modern aviation technology, then just by whether an electromagnetic compatibility system needs to be solved, it can be reversed whether a newly developed aviation engine has a FADCE system. Once the FADCE system is in place, it can be confirmed that it is a new modern engine developed entirely from scratch. The FADCE system is basically a new type of engine that has only become popular in this century. So is it possible to imitate the old-fashioned engines of other countries and then artificially add the FADCE system? The probability of this possibility is infinitely close to zero. For example, W18 is indeed an imitated D-30KP-S, even in order to increase the equipment speed, it completely copied the mature design, and no major modifications were made. For an old engine developed more than 50 years ago.
The difficulty of forcibly adding the FADCE system to my own imitation version is astronomical. Because many designs of old-fashioned engines are completely incompatible with modern control systems, and there is even no information interface. Moreover, as an engine developed by others, many of the original design parameters of the control rate are not known. It is impossible to add FADCE without knowing the original control rate. Hanhai Langshan (Xiongnu Langshan) believes that this is like knowing the blood type of the parents, and you can reverse the blood type of your own child. And if the child is adopted. Without knowing the original blood type of his parents, it is impossible to know his blood type by reverse deduction. FADCE system is the English abbreviation of Full Authority Digital Engine Control System. Because of many aviation technology vocabulary, English vocabulary is directly used. People in the industry may not be able to immediately and accurately say what the complete Chinese translation of the system is. This phenomenon is like saying that GDP is basically understood, but what is the complete Chinese translation of GDP? I am afraid that most people are not sure, this is also a normal vocabulary phenomenon.
FADCE system refers to the full-time and full-function control of the engine's work and the full-authority control of its output thrust as a fully automatic integrated control system using digital technology. It accepts inputs from various parts of the engine and various parameter sensors, including various temperature, pressure, speed, flow, angular position data, and is also connected to the air data computer and thrust management computer, and accepts the position of the throttle lever and other indication signals. The processing and calculation functions of the digital engine electronic controller, after digital-to-analog conversion and power amplification, drive the various executive components of the engine, including fuel metering valve, compressor air flow valve, adjustable stator blade angle, adjustable bleed valve, Turbine and guide cooling air valve, fuel oil heat exchanger valve, super-rotating electromagnetic valve, reverse thrust mechanism, etc. The full-time and full-function features of the system make the engine work automatically in all states such as starting, accelerating or decelerating, steady-state thrust, slowing, and reverse thrust. It has control over starting logic, reverse thrust logic, ignition control, fuel distribution, and fuel oil. Automatic control function for all functions such as heat exchange, air release control and thrust management.
In the final analysis, the system is that the pilot only needs to manipulate the engine thrust through the throttle lever, and the rest is entirely dependent on the intelligent management of the engine itself instead of the past It is also concerned with displaying at least a dozen instruments such as engine temperature, thrust, oil, and speed. The FADCE system has multiple backups. If the engine considers the pilot's throttle control to be dangerous and rough, it will even automatically adjust it. If it is intelligent, it will inevitably save fuel and enhance the overall life of the engine. The same engine, with FADCE installed, can save 30% of fuel and increase the actual life of the engine by 50% when running for a long time. The effect is very obvious.
