At this time, the plane was very fast. At high speed, when the current wheel tripped by the ridge of the field, the nose of the plane flipped over, as if the big man was tripped.

The airplane was facing the sky and the back was facing the ground. The whole plane slid forward with its back, and Mars was rubbed out from the ground.

Suddenly, a big stone appeared in front of him. The canopy cover collided with the big stone, and it was immediately smashed to pieces. The test pilot Belyakov, who was in the cockpit, looked at the big stone that was hit quickly, his pupils widened, and he had only time to make a sound in his mouth: "Long live the Soviets!"

The plane did not catch fire.

When the people in the base arrived, the nearby villagers had already come to watch. They carried water and put out the frictional flames. They looked at the almost disintegrated fuselage and the pilots who were knocked out of recognition.

Mi Gaoyang also rushed up. His face looked ugly, his legs were trembling, and he failed. This test flight failed again. What was the reason?

Moreover, he also took Belyakov's life.

"Take the plane back and dismantle and study." Gromov also came up. The muscles on his face trembled for a moment, and then his eyes showed firmness again.

As test pilots, they are just accompanying danger. When needed, they must conduct test flights even if they know they are dead. This is their mission.

Gromov was such a person at the beginning.

The plane can still burn steadily on the ground. Why does it suddenly stop when it reaches the air?

This is a problem that must be solved.

Their movements were very fast. When the engine was sent back to the test flight yard, they immediately dismantled it and finally found the reason. In a oil pipe, there were icicles that had not yet completely melted.

"The temperature in high altitude is low. Almost every 1 kilometer rise, the temperature will drop by six degrees. When the plane rises to a height of three thousand meters, the temperature has dropped to zero degrees. In this way, the moisture in our alcohol begins to solidify." This reason was finally found out, and it was found at the cost of the life of the test pilot.

(Baidu, if calculated based on this, wouldn’t the temperature on Mount Everest be tens of degrees below zero?)

Experiment on the ground will not cause such problems. Only when you reach a high altitude will the fault be displayed. This has become the first problem facing everyone.

The flight altitude of the plane is very high. MiG-3 can jump to a height of 10,000 meters, and there are dozens of degrees below zero. I use alcohol instead of gasoline. The first question is that the moisture inside solidifies and what should I do if the oil pipe is blocked?

There are two solutions.

"On the one hand, we can transform the fuel tank and oil pipe into heating, so that the temperature inside it is higher than zero degrees, so that it can be used normally," said an engineer.

Oil tank and oil pipe heating have already been used on this scale in later generations. The heavy truck burns diesel, and diesel will become waxed at low temperatures, so low-grade diesel must be used. However, this diesel is expensive and is not resistant to burning, so the method of heating the oil tank and oil pipe can burn normal zero diesel.

It's not difficult to say, just change it to electric heating, but if you actually operate it, there will be problems.

Electricity on the plane is precious, and electric heating consumes a lot of electricity. What's more, their fuel is alcohol, and once any failure occurs, it may directly catch fire.

Moreover, it will also cause complex internal structures. They will have to undergo major modifications to existing aircraft and transform all fuel tanks and oil pipes, but it is a considerable project volume.

So, when they heard this plan, everyone shook their heads, which did not meet the current needs. What they wanted was to make small changes to the plane, and it was best to change the installation without changing it. It was definitely not necessary to almost disassemble the plane, change the heating fuel tank and heating pipe.

This is not suitable.

"Another solution is to increase the purity of alcohol and make the alcohol content higher than 99.9%.

Since heating the fuel tank oil pipe is inconvenient, we should find a way to improve the purity of the fuel.

Several tons of vodka have been consumed, but vodka with a purity of only 95% is still not good, so just continue to increase the purity so that it is so high that it is almost all pure alcohol.

In this way, the moisture content inside is quite sparse. Even if it solidifies in high altitude, it will not block the oil pipe. After entering the carburetor, it is approaching the engine, and the engine itself has enough heat to melt it.

Improve the purity of the fuel! Upon hearing this suggestion, Migoyan nodded: "This is a feasible solution, hand over this task to the winery, so that they can find ways to meet our requirements."

"In addition to this, based on the recording equipment on the plane and Comrade Belyakov's report in the test flight, we found that as the plane continued to climb, the power began to drop significantly. We calculated that the calorific value of alcohol is smaller than that of gasoline. In order to get more power to the plane, we need to adjust the fuel volume and let more alcohol enter the cylinder to burn."

Soviet aircraft designers found the right solution.

The use of alcohol instead of gasoline has also happened in history, in the northeast of China. At that time, it had just been liberated and a group of island countries were obtained, but there was no gasoline. In order to train China's own pilots as soon as possible, Comrade Zhu Rui, the captain of the aviation corps at the time, provided Comrade Jiang Tianran, the deputy education director of the aviation school, with a top-secret information on the Japanese army and more than a dozen barrels of alcohol for trials.

At that time, the island people studied the use of alcohol instead of aviation gasoline. The reason for this was that they stopped in the air and killed 31 people. Jiang Tianran reported this situation to school leaders, comrades Chang Qiankun, Wang Bi, etc., and proposed that China continue to conduct alcohol replacement tests by itself.

After hundreds of tests and analysis, they finally figured out the reason for the parking in the air: it turned out that the amount of alcohol released by the energy released by the ignition of alcohol was less than that of the aviation gasoline. The solution to the problem was to improve the purity of the alcohol, modify the engine nozzle, increase the amount of alcohol sprayed, and make the heat energy burning of the alcohol the same as the gasoline. In the end, they succeeded.

Historically, island countries lack fuel, but the Soviet Union did not lack it. But now, the real dilemma forces the Soviet Union to change its thinking and find alternative means.

They were replacing gasoline with alcohol, which was their best solution, and now, just as Germany was already starting to attack Moscow, they finally found the right solution.

Only by allowing the fighter planes to continue flying can we fight in the air with the Germans and better protect the land battlefield. Without air supremacy, there will be nothing.
Chapter completed!