Chapter 686: Adventure
The next day, Li Zhao came to the test workshop of the aircraft factory early, and the two engines had already been transported, and now everyone was hoisting the engines onto the test bench. One of them was previously tested for ignition, and after being disassembled and inspected, no problems were found, and after some cleaning and maintenance, it was assembled again, while the other one, of course, was newly assembled and will be tested today.
Just when everyone was busy, there were many people in the workshop, looking at the people, Li Zhao had to sigh, there were really a lot, of course, this time the military was the mainstay, and the main supplier of the aircraft was them, and they came more than they should be, but among the people who came this time, there were many heavyweights.
After these people came, they did not disturb the work of Li Zhao and others, but stood not far away, watching the operation of Li Zhao and others, and after all the preparations were completed, Li Zhao stepped forward to greet everyone.
After a few words of greeting, one of the generals said: "It's still your factory is amazing, and you can get a big guy out quietly, this is all tested, and we were notified, which is a bit unkind, but since we are here today, I think there has been a lot of progress, and we will not pursue what you are concealing, now it's time to introduce us to the performance, right?" We didn't know what we were looking at until we saw the real thing."
This secrecy work can be done, Li Zhao looked at Father Su and Master Zhang, and introduced them as if they were not allowed to do so, but when Li Zhao said that the half-thrust was 70,000 N, the people here were not calm, and someone directly asked: "You are not bragging, the turbojet engine we can produce now has an afterburner thrust of only 318,000 N, and the maximum afterburner thrust of the turbojet engine used by Type 62 is only 66,000 N."
Hearing this data, Li Zhao was not surprised, if the thrust could not be enhanced, why study the turbofan engine? And Li Zhao not only has drawings from the future, but also more advanced alloys from the future, just raising the combustion temperature from 1,34 to 1,008, how much will the power increase.
Li Zhao said at this time: "This engine is very different from the turbojet engine, this is called a turbofan, this engine can more effectively use the energy generated by fuel combustion, so it can also provide greater power, the half thrust we designed is 70,000 N, the maximum static thrust is 13,000 N, and the maximum afterburner thrust is not less than 16,000 N, after all, we are preparing to let more than 30 tons of aircraft fly out of Mach 2 speed, so this power is not too big, for our requirements, It's just right."
The factory studies this engine, in order to keep it secret, so there are very few people who know the specific situation, and now it has entered the test stage, and needs to get the support of customers, and when many tests are carried out next, pilots will be needed, and it will not be possible to show it, so there will be this visit, but this visit, but everyone is calm, it is really the span of this engine is too large, too beyond their expectations.
Although they don't know what the factory is researching, they can also understand that it is an aircraft engine, after all, they have seen similar test benches, so they know what it is, in their ideas, the technology in the factory is more advanced, they think about whether to give them a surprise, such as increasing the thrust to 80,000 N, but where would they think that the factory directly put satellites, and the half thrust is 70,000 N. ….
Seeing everyone's look of disbelief, Li Zhao also went on to popularize the principle of the turbofan engine to everyone, but after listening, these people were still a little confused, it was really too advanced this engine, and it was completely beyond their cognition, after all, there are few places where this engine can be produced after sixty years, not to mention that it is now in the early days of playing turbojet engines, where can they imagine.
Looking at the people who didn't believe it, Li Zhao had to use the test data to speak, but it is likely that there will be unimaginable consequences in doing so, but so many leaders today can also take a risk, anyway, the test to be carried out today, if you don't do it today, you will definitely do it in the future, but after the afterburner is opened, the impact on this engine will be very large, and it is not friendly to the current test, after all, there are many projects that need to be tested.
In addition to this, more importantly, Li Zhao does not know the current two
What is the situation of the engine, if there is a serious problem when accelerating to a certain extent, then today's test will be a shame, and it will have a very big impact on the future development of the engine, and Li Zhao does not dare to guarantee what the result will be.
Thinking of this, Li Zhao muttered to Father Su, and after some exchange, Father Su gritted his teeth and agreed, so he heard Father Su say at this time: "Leaders, I didn't plan to test a lot of content today, after all, only one of the two engines here has undergone an ignition and low-speed operation test, but in order to show the overall performance of the engine, I am going to directly conduct a comprehensive test today, but the risk will be very large."
After everyone listened, they also understood what test was going to be carried out today, but this is indeed very risky, after all, it has only just carried out an ignition test, and there are still many tests that need to be carried out now.
After a while, the results came out, and one of the generals said, "The test can be carried out, and we also want to know how the engine will perform, which is very important for our future arrangements for the aircraft."
Li Zhao also said at this time; "Leader, the main thing is that the risk of this test will be relatively large, and once something happens, it will be at least a few million losses, so the test plan we originally formulated is relatively conservative, and we want to get as much test data as possible through each engine, so now we have relatively little test data in our hands, and we can only verify whether we can meet the design indicators through today's risky test."
After talking to everyone about the test plan, I invited everyone into the operation room, and then began to ignite the engine that had been tried once. Under the command of Li Zhao, the fuel injection of the engine gradually increased, and slowly, it reached a half-thrust state, at this time the engine did not have any abnormal noise, but this speed Li Zhao was ready to maintain for a while, and at this time, the operator also reminded: "Reach the half-thrust state, the thrust number is seventy-six."
Hearing this data, Li Zhao's eyes narrowed, it was better than he imagined, and there was no abnormal sound in this state, and at this time, everyone was staring at the dashboard, and the operator was also introducing to everyone what data was represented on the dashboard. ….
This time it slowed down, and then, every five minutes, 10 percent at a time, and just like that, half an hour, it was 100 percent, and then the operator continued to report, "One hundred and thirty .1 thrust."
After Li Zhao listened, he felt okay, it didn't exceed expectations, this thrust ran for five minutes, Li Zhao and everyone said: "The next thing is the maximum afterburner thrust, but because it is in the ground state, this test time will not be long, I am afraid that the engine will be burned out directly, because in the afterburner state, the temperature of the combustion chamber will reach a high temperature of 1,080, it is okay for a short time, but it is really not good for a long time."
Hearing this temperature, everyone was also stunned, yes, this temperature is too high, what is the current turbojet engine temperature? It's less than a thousand degrees, okay, it's good here, and it's done directly to 1,008, what kind of concept is this? Now the engine can be burned directly, but here is the afterburner temperature, at this time everyone looked at the instrument on the operation board, and sure enough, the place representing the temperature of the combustion chamber was displayed as more than 1,600 degrees.
Just when they were watching, Li Zhao also ordered, the engine entered the afterburner state, as the temperature was raised, when it reached one thousand eight, the maximum thrust came out, and the data shown above was one hundred and sixty-two, this thrust was higher than Li Zhao imagined, but thinking about the ground, it can be understood, after all, the pressure on the ground is greater, and the combustion will be full, and soon half a minute passed, Li Zhao also asked the operator to slow down.
Soon the speed slowed down, until finally listened, and then the people in the operating room began to applaud enthusiastically, this test, no matter how much the engine will be damaged in the end, this is a perfect answer.
With this test, and then the damage situation is clear, then the future test can be bold, after all, this test passed, indicating that the engine is not obvious mechanical problems, follow-up
The test is to verify the problems of each part, and the processing technology of each part will also be involved here, and there are many problems that need to be solved, and Li Zhao was also relieved at this time, yes, no one is more nervous than him.
If this experiment fails, then there will be a lot of problems, that is, Father Su and Master Zhang, they are both from the army, and they have all fought in wars, and they dare to support Li Zhao like this, and they don't dare to play like this if they change people.
Mortal dwelling