Comparison and Analysis Between Conventional and Additive Manufacturing Technologies of Lpre

This is the authors' abstract. We don't add key points for this paper.

The modern pace and development of rocket technology determine the emergence of high competition in the service market, as well as achievements in the field of scientific, design and industrial activities. Thus, in order to successfully design one of the most complex units of rocket products, liquid propellant rocket engines, one must be aware of the entire production chain, as well as the main features and regularities of both traditional and modern production processes. Not only this knowledge makes it possible to significantly optimize the design and manufacturing process, but also encourages the search for new production and design solutions aimed at significantly reducing costs along with the lead time. In recent years, in the field of rocket engineering, additive manufacturing is gaining more and more popularity as an alternative way of obtaining products. Unlike subtractive manufacturing, additive manufacturing methods make it possible to manufacture products with a significant complex internal structure without the need to apply for additional technological processes of joining parts e.g. welding, soldering, etc. Such simplification significantly shortens the industrial chain, which is practically synonymous with a decrease in the cost of production, as well as a significant increase in the efficiency of the obtained products. One of its indicators is reliability, or the probability of fault-free manufacturing of a part. When designing new rocket products, one of the most complex and the costliest components is the camera, the cost of production of which can sometimes reach up to 50% of the cost of the engine. Therefore, it is advisable to analyze the impact of the use of additive technologies for their production, as well as the qualitative impact on increasing the efficiency of the obtained products. This paper examines the structure of the LPRE chamber, the main methods of its production, as well as the possibility of using new methods of additive technologies as an alternative to conventional ones. Also, the positive impact of additive technologies on the reliability of manufacturing, which can be considered as one of the indicators of the overall efficiency of the product, is considered.