{"id":5251,"date":"2025-01-13T17:30:20","date_gmt":"2025-01-13T09:30:20","guid":{"rendered":"https:\/\/turbineblade.net\/?p=5251"},"modified":"2025-01-13T17:30:21","modified_gmt":"2025-01-13T09:30:21","slug":"basic-knowledge-of-aircraft-engine-blades-1","status":"publish","type":"post","link":"https:\/\/turbineblade.net\/pt\/basic-knowledge-of-aircraft-engine-blades-1\/","title":{"rendered":"Basic knowledge of aircraft engine blades (1)"},"content":{"rendered":"

Introduction to turbine blades<\/a><\/strong><\/h2>

The component with the worst working conditions in the turbine engine is also the most important rotating component. In the hot end components of aircraft engines, the turbine blades are subjected to high-temperature gas erosion and temperature changes during the engine start-up and shutdown cycles, and the rotor blades are subjected to centrifugal force at high speeds. The material is required to have sufficient high-temperature tensile strength, endurance strength, creep strength, as well as good fatigue strength, oxidation resistance, gas corrosion resistance and appropriate plasticity. In addition, long-term organizational stability, good impact strength, castability and low density are also required.<\/p>

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The gas inlet temperature of advanced aircraft engines reaches 1380\u2103 and the thrust reaches 226KN. The turbine blades are subjected to aerodynamic and centrifugal forces, with the blades bearing a tensile stress of about 140MPa; the blade root bears an average stress of 280~560MPa, and the corresponding blade body bears a temperature of 650~980\u2103, and the blade root is about 760\u2103.<\/p>

The performance level of turbine blades (especially the temperature bearing capacity) has become an important indicator of the advanced level of a model of engine. In a sense, the casting process of future engine blades directly determines the performance of the engine and is also a national aviation industry. A significant mark of level.<\/p>

Blade shape design<\/strong><\/h2>

Since there are many blades, if they are designed into straight regular shapes, a lot of processing technology can be reduced, the design difficulty can be lowered, and a lot of costs can be reduced. However, most of the blades are twisted and curved.<\/p>

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