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 […]
How are aircraft engine high-pressure turbine rotor blades manufactured?
The principle of how aircraft engine high-pressure turbine rotor blades are manufactured is very simple, but the various parameters in this process require a lot of experiments to obtain the parameters of each node, the composition of auxiliary materials, and a lot of luck. First, the high-pressure turbine rotor blades require complex internal cooling air […]
Why do aircraft engines use integral blades? They are the key to flying!
The aircraft engine is the “heart” of the aircraft and is also known as the “crown jewel of industry”. Its manufacturing integrates many cutting-edge technologies in modern industry, involving materials, mechanical processing, thermodynamics and other fields. As countries have higher and higher requirements for engine performance, new structures, new technologies and new processes in research […]
The influence of hot corrosion on the fatigue performance of hot end component materials
At present, there is a clear understanding of the influence and mechanism of hot corrosion on the fatigue performance of turbine disk alloys. However, similar to high-temperature alloys for turbine blades, existing research results are mainly based on pre hot corrosion of turbine disk alloys and fatigue tests, which cannot reflect the interaction between hot […]
The whole machine is stunning! Graphic animation takes you to understand the four major violent testing experiments of aircraft engines
An aircraft engine is a highly complex and precise thermodynamic machine. As the heart of an aircraft, it is not only the driving force for flight, but also an important driving force for the development of the aviation industry. Every important change in human aviation history is closely related to the technological progress of aircraft […]
Turbine Basics – Turbine and Blade Cooling Technology
Axial flow turbine structure A turbine is a rotary power machine that converts the enthalpy of a working fluid into mechanical energy. It is one of the main components of aircraft engines, gas turbines, and steam turbines. The energy conversion between turbines and compressors and airflow is opposite in procedure. The compressor consumes mechanical energy […]
Analysis of the development history, market status and development trend of turbine blades
Development History and Trends of Turbine Blades Turbine blades are divided into two categories: turbine guide blades and turbine working blades. The main function of turbine guide vanes is to adjust the flow direction of the exhaust gas from the combustion chamber. The material operating temperature can reach up to over 1,100°C, and the stress […]
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