"Stop the fuel injection, stop the test."

With a sentence to stop the test, the fuel was cut off, the combustion chamber also stopped burning, and slowly the hot air in the entire space of the test center also cooled down.

A look of frustration hung on his face, although he had already experienced the failure of the experiment many times. But every time the test began, it was silently watching, hoping to be successfully completed, and it was obvious that the test was a failure.

"The fuel problem, when propane was used for combustion just now, there was no such phenomenon at all, but there was a problem when gasoline was used instead, and it must be that gasoline is not suitable for turbojet use."

This conclusion is easy to settle, and these are obvious problems. As long as you watch the whole test, you can see it.

"In this way, the test continues, and for the time being, I will use propane for the time being, and do some experiments with irrelevant fuels." Yang Hui thought about it, but he could only think of this reliable plan, the time was urgent, and the experiment could not be stopped.

Nodding, Section Chief Wu can be regarded as agreeing with Yang Hui's suggestion, this is the best plan.

"Okay, let's continue testing, you can solve the fuel problem now, and now we have to test the right fuel right away."

Seeing that the person in charge of the test agreed to his plan, Yang Hui beckoned the section chief of Shangwu and walked out. I was silent all the way, thinking about fuel in my heart, and I didn't have a clue yet, so I could only slowly come up with a plan and talk about it.

In the office, all kinds of flavors are used, everything is going smoothly in the morning, and there is a problem at the beginning of the test in the afternoon, the key is that there is no reliable solution now, this mood is really indescribable.

It stands to reason that as a person who has been reborn, his ability to withstand it is strong enough, but now there is still a problem with the design he worked so hard to make, and this kind of blow does not mean that you can avoid it if you are reborn.

Pondering, sighing, sighing, in the end, we have to get back up, the problem is there, it is impossible to solve it by itself, or we have to come up with a practical solution, so that the problem can be solved.

Refresh your head, and now it's time to figure it out. This fuel must be tested, and now a device is needed to test the combustion performance of different fuels, and Yang Hui has already thought about how to design the test device.

This method is also very simple, that is, directly find a medical syringe, and then use the plastic tube for infusion to connect the syringe and the needle, and fix the needle on the vise. The fuel is loaded into the syringe, and the fuel is pushed out of the needle at a constant speed during the test, and ignited directly when the needle is out of the fuel.

In this way, a simple test device can be made, sometimes the industrial design is so simple, there is no need to do too much trouble, the whole is very high, this is the most useful experience of the industrialization of the republic.

It was very simple to turn his idea into reality, and after Yang Hui told Section Chief Wu, he quickly found syringes, hoses and needles from the infirmary.

I found a spacious and windless place, there was no vice to talk about, and I could just find a way to fix the needle.

Even if the most important test device is installed in place, although it looks dirty and simple, it can meet the design requirements according to Yang Hui's assumption. It's better to be a little dirty.

No matter how soil, it's good to test it, suck half a jar of aviation kerosene into the syringe, connect the hose and the needle, and slowly push the kerosene in the syringe until a column of oil shoots out of the needle, which is the chief of the martial arts section with a long match to ignite the oil column closer, just close to the oil pillar ignited, a beautiful flame arc started from the needle, and finally fell to the ground. The whole column of oil in the air burned very well.

But no matter how good it is, you can't use aviation to make model aircraft turbojet fuel, this thing is really hard to find, so you still have to think of other ways to start anew.

There are two most common types of liquid fuels in the world, gasoline and diesel. The two fuels have their own merits, but the single use of gasoline in the turbojet above these two is definitely not possible, and it can be seen in the test center just now: gasoline ignition is relatively easy, but the combustion is not sufficient, and there is intermittent combustion in the institute.

So now it's time to try the diesel, drain the aviation kerosene out of the syringe, suck up a can of diesel, and prepare for the test.

The needle shot out a diesel column at high speed, bringing the match closer, but no matter how it was lit, it was not ignited, which was the test situation of diesel, and it was not optimistic.

Now there is only one last way left, try to mix gasoline and diesel, as long as it can ignite. The characteristics of diesel fuel are that it is not volatile and has stable combustion, but it is not easy to ignite directly. Gasoline, on the other hand, is volatile and has unstable combustion, but it can be ignited directly by an electric spark. If you think about it, you should have unexpected surprises when you mix it up.

First of all, in order to ensure the ignition of fuel, the ratio of gasoline and diesel is 1:1, and if it can be ignited, the proportion of diesel will be increased, until finally a suitable ratio can be stably combusted, and if it cannot be burned, the proportion of gasoline will be increased until it can be burned, and the appropriate ratio will be slowly found.

If you can't burn stably, you'll have to use propane as fuel or jet fuel, both of which are inconvenient.

Draw gasoline and diesel into the syringe according to the proportion, and then I found that the syringe is really easy to use, there are scale marks on it, and it is much more convenient to extract different proportions of gasoline and diesel according to the scale marks.

First, there is a 1:1 ratio combustion test. As the oil column is sprayed out, it can be lit with a match, and the combustion is much more stable than that of a single gasoline, but there are still some minor problems.

Continue to increase the proportion of diesel. Reaching 2:1, the ratio in the test was significantly better than the 1:1 ratio. As the ratio of diesel fuel increases, the flame combustion continues to stabilize, and when the ratio of diesel and gasoline is reached at 5:1, it is a bit difficult to ignite, and now it is considered to find a stable combustion fuel.

"Write it down, gasoline and diesel are mixed combustion, the ratio is diesel 4 gasoline 1, this is the optimal combustion ratio, and finally found a way."

Putting down the syringe, Yang Hui's joyful smile can clearly be seen, this is a good weather, good weather. Even the pungent smell of the oil Yang Hui felt fragrant.

"yes, I didn't expect to find a way so quickly, it seems like it's only been two hours and it's been less than two hours, right?"

Section Chief Wu was also very happy, and what made him happiest was not only that he had found this suitable fuel ratio, but that he was most happy that he had solved this big problem in only two hours.

"Pack up, let's go to the test center, I have to be able to burn stably in the combustion chamber to be relieved." Side said. Yang Hui has already taken off the syringe and the needle, as for whether it can continue to be used as a medical treatment, Yang Hui doesn't care, he just cares whether his combustion chamber can burn stably.

"Hey, you're here again. Anything else? ”

"No, we've found the right fuel, and a 4:1 hybrid combustion of diesel-gasoline is best."

When I heard that I had found a solution so quickly, I immediately stopped the test preparation that was being done here. The person in charge took Yang Hui to an oil depot.

"It's mainly aviation kerosene here, but there is still gasoline and diesel, mainly for the cars in the station, and now you can match the fuel you said in proportion," pushed open the oil warehouse, and some lubricating oil barrels were neatly stacked. As for gasoline, diesel, kerosene, these are packed in underground oil wells.

found a large oil drum, filled it with diesel gasoline in proportion, and the two lifted a large barrel of oil and put it on the trolley, and the chief of the martial arts section worked as a coolie and pushed a barrel of oil to the test center.

The combustion chamber ignition test is performed again, with air in the fan and then propane. Reach the right ratio and successfully ignite. Start preheating, since the fuel is a mixed fuel, so the ignition point also changes accordingly, according to the proportional calculation, the ignition point is 262, the conservative point, when the temperature reaches 280 is the start of the order.

"Inject liquid fuel to prepare."

"Ready, the whole is injected"

As the fuel mixture is injected into the combustion chamber, only a small sound is heard, and it is obvious that the color of the flame has changed, and the fire has become more intense.

The combustion was stable, there was no problem with the mixture, and the sensor transmitted data indicating that the maximum temperature of the combustion barrel was 710 degrees Celsius.

"There is no problem with fuel" Looking at the regularly beating flames, Yang Hui just said this sentence lightly.

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