Абашев В.М.   Корабельников А.В.   Куранов А.Л.   Tretyakov P.  

Efficiency increase of high-speed ramjet engine on hydrocarbon fuel during aircraft acceleration to M = 6+

Reporter: Куранов А.Л.

When analyzing the working process in the ramjet engine, complex consideration of all problems seems to be reasonable as their solution determines the efficiency of the engine. 
The main ones are: providing high combustion efficiency and minimal hydraulic losses, reliability of cooling of high-heat areas using cooling capacity of fuel and ensuring the strength of elements of motor channel with non-uniform thermal loads due to combustion fuel in complex gas-dynamic flow structures.
The report examines the principal ways and approaches to solving mentioned problems, their novelty and advantages are proved and compared with traditional methods. Thus, to ensure high combustion efficiency and minimum hydraulic losses is proposed a method for organizing an intensive (pre-detonation) combustion regime with a smooth deceleration of the supersonic flow to the sonic speed with the use of a pulse-periodic gas-dynamic flow control. We propose a method for cooling high-heat areas that uses cooling resource of hydrocarbon fuel and includes the process of chemical conversion of kerosene (conversion) and nanocatalysts. The analysis showed that the high-heat design will work in elastoplastic area of behavior of construction materials, which is directly related to the resource engine operation. There are problems in reducing the strength of ramjet engine shells depending on deformations. Deformations also lead to a noticeable effect on the course of the working process in the combustion chamber and, naturally, on the heat transfer process and the catalysts operations (plastic and elastic deformations of bound shells).This paper gives some results illustrating the presence of mentioned problems. It is concluded that it is important to study both with the implementation in model experiments, and in carrying out theoretical and theoretical studies. The work was partially supported by the Russian Foundation for Basic Research (Project No. 17-08-00183).

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