Chapter 1541： Find the reason (2/2)
It is not difficult to say, just change to electric heating, but in actual operation, there will be problems.
Electricity on airplanes is precious, and electric heating consumes a lot of electricity. What's more, their fuel is alcohol. Once there is any failure, it may directly catch fire.
Moreover, it will also cause the internal structure to be complicated. They have to make major changes to the existing aircraft, including all the fuel tanks and fuel pipes, but it is a lot of work.
Therefore, everyone shook their heads when they heard this plan. It does not meet the current needs. What they want is to make small changes to the aircraft. It is best to change the aircraft without modification. It is definitely not almost necessary to take the aircraft apart and replace Heating oil tank and heating oil pipe.
This is inappropriate.
”Another solution is to increase the purity of the alcohol, so that the alcohol content is higher than 99.9%.”
Since heating the fuel tank tubing is inconvenient, try to improve the purity of the fuel.
Several tons of vodka have been consumed, but vodka with a purity of only ninety-five is still not enough, so just continue to increase the purity and make it so high that almost all of it is pure alcohol.
In this way, the moisture content inside is quite scarce, even if it is solidified in the air, it will not block the oil pipes, and after entering the carburetor, it is already close to the engine, and the engine’s own heat is enough to melt it away.
Improve the purity of fuel! Hearing this suggestion, Mikoyan nodded: ”This is a feasible plan. Give this task to the winery and let them find a way to meet our requirements.”
”In addition to this, based on the recording equipment on the plane and the report of Comrade Belyakov during the test flight ~ ~ we found that as the aircraft continued to climb, the power began to drop significantly. We have calculated that the calorific value of alcohol is smaller than that of gasoline. In order to get more power for the aircraft, we need to adjust the amount of fuel so that more alcohol enters the cylinder for combustion.”
The Soviet aircraft designers found the right solution.
The use of alcohol instead of gasoline has also happened in history. It was in the northeast of China. It had just been liberated and got a group of aircraft from island countries, but there was no gasoline. In order to train China’s own pilots as soon as possible, Zhu Comrade Rui provided Comrade Jiang Tianran, the deputy director of education of the aviation school, with a top-secret data on the Japanese army and more than a dozen barrels of alcohol used in the experiment.
At that time, the island nation’s trial of using alcohol to replace aviation gasoline was unsuccessful. The main reason was parking in the air, and 31 people were killed during the trial. After Jiang Tianran reported this situation to school leaders Chang Qiankun, Wang Bi and other comrades, he proposed that China itself continue to conduct alcohol substitution experiments.
After hundreds of experiments and analysis, they finally figured out the reason for aerial parking: it turned out that the amount of energy released by burning alcohol is less than aviation gasoline. The solution to the problem is to improve the purity of the alcohol, modify the engine nozzle, increase the amount of alcohol sprayed, and make the alcohol combustion heat the same as gasoline. In the end they succeeded.
Historically, island countries lacked fuel, but the Soviet Union did not lack it. But now, the real dilemma has forced the Soviet Union to change its thinking and find alternatives.
They are using alcohol instead of gasoline, which is their best plan, and now, when Germany has begun to attack Moscow, they finally found the right solution.
Only by letting the fighters continue to fly can they fight the Germans in the air and better protect the land battlefield. Without air supremacy, there would be nothing.