Study on the influence mechanism of thermal barrier coating on the cooling effect of turbine blades of a certain type of gas turbine
In order to obtain the thermal insulation effect and temperature distribution law of thermal barrier coating on turbine blades, a certain type of gas turbine high-pressure turbine moving blade with internal cooling structure was used as the basic model. The cooling effect of high-pressure turbine moving blade with or without thermal barrier coating protection was […]
Welding repair and remanufacturing technology for aircraft engine turbine blades and fan/compressor blades
Aircraft engine blades are in a complex and harsh working environment for a long time, and are prone to various types of damage defects. It is expensive to replace blades, and research on blade repair and remanufacturing technology has huge economic benefits. Aircraft engine blades are mainly divided into two categories: turbine blades and fan/compressor […]
Precision machining technology and equipment for thin-walled, special-shaped and complex blades of aircraft engines
As a key component to achieve the performance of aero-engines, blades have typical characteristics such as thin-walled, special-shaped, complex structures, difficult materials to process, and high requirements for processing accuracy and surface quality. How to achieve precise and efficient processing of blades is a major challenge in the current aero-engine manufacturing field. Through the analysis […]
Study on Combustion and Emission Characteristics of Rich Hydrogen Gas in Gas Turbine Model Combustion Chamber (1)
Replacing fossil fuels with renewable energy sources such as hydrogen can significantly reduce carbon emissions. In the field of gas turbines, domestic and foreign manufacturers have focused on laying out hydrogen gas turbines. At present, there are significant technical challenges for pure hydrogen gas turbines [1], and hydrogen blending gas turbines are the key development […]
Load characteristics and calculation status of compressor and turbine disks of aircraft engines
Although there are differences in the functions and structures of compressor and turbine rotors, in terms of strength, the working conditions of the wheels of the two are roughly the same. However, the turbine disk is at a higher temperature, which means that the working environment of the turbine disk is more harsh. The loads […]
Research progress on aerodynamic performance of aircraft engine combustion chamber based on large eddy simulation
The combustion chamber is one of the core components of an aircraft engine, and the aerodynamic performance of the combustion chamber plays a vital role in the performance of the entire engine. In order to meet the increasingly stringent technical requirements of the engine for the combustion chamber, the combustion organization mode and flow characteristics […]
Single crystal turbine blades: a technological breakthrough that breaks through high temperature limits (3)
4 Defect formation in DS process As the structure of advanced turbine blades becomes more complex and larger in size, a variety of solidification defects such as stray grains, freckles, low-angle grain boundaries, streaky crystals, orientation deviation, recrystallization, high-angle grain boundaries, and crystal selection failure are more likely to occur during the single crystal growth […]
Single crystal turbine blades: a technological breakthrough that breaks through high temperature limits (2)
2 Turbine blade development Iterative Development Taking a turbofan engine as an example, the value of the blades accounts for as much as 35%, and they are a critical component in the manufacture of aircraft engines. In an engine, there are 3,000 to 4,000 aviation blades, which can be divided into three categories: fan blades, […]
Single crystal turbine blades: a technological breakthrough that breaks through high temperature limits (1)
1 Development of aviation gas turbine engines As the performance requirements for aircraft for transportation, military, production and other purposes increased, the earliest piston engines could no longer meet the needs of high-speed flight. Therefore, since the 1950s, gas turbine engines have gradually become mainstream. In 1928, Sir Frank Whittle of the United Kingdom pointed […]
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