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首页> 外文期刊>International journal of mechanics and materials in design >Containment of blade shedding in gas turbine engines: part Ⅰ-design and development of a scaled down test rig
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Containment of blade shedding in gas turbine engines: part Ⅰ-design and development of a scaled down test rig

机译：燃气轮机发动机中的刀片脱落：第一部分 - 缩小试验台的设计和开发

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摘要

Part I of this complementary article is concerned with the design, development and commissioning of a novel instrumented scaled down test rig to examine the dynamics and containment of a released blade during blade shedding (blade out) incidents in aviation gas turbine engines. The scaled down fully bladed disk is designed using non-dimensional parameters derived using Buckingham's dimensional analysis technique. These parameters are enforced to ensure dynamic equivalency of the scaled down model and a realistic full size gas turbine engine. The rotor with drive system is encapsulated in a thick protective casing to contain all fragments within the confines of test rig and ensure safety of operation. The test rig is equipped with a high speed camera and numerous sensors interconnected via data acquisition system to two processors for data collection and data management. The purpose is to measure the released blade trajectory, its multiple interactions with the trailing blades, containment within the ring, the stresses resulting from dynamic unbalance and blade impingement, and their effect on engine mount. The successful operation of the newly commissioned test rig is tested under steady state conditions and we were able to demonstrate the applicability of the rig to blade shedding and containment tests in an efficient and cost effective manner.
机译：该补充文章的第I部分涉及一种新颖仪表缩小的试验台的设计，开发和调试，用于检查航空燃气涡轮发动机的刀片脱落（刀片外）事件期间释放刀片的动态和遏制。使用使用Bughingham尺寸分析技术导出的非尺寸参数来设计缩小完全叶片磁盘。强制执行这些参数以确保缩放模型的动态等效和现实的全尺寸燃气涡轮发动机。具有驱动系统的转子封装在厚的保护壳中，以在试验台的范围内包含所有碎片，并确保操作安全。试验台配备了高速摄像头和多种传感器，通过数据采集系统互连到两个处理器，用于数据收集和数据管理。目的是测量释放的刀片轨迹，其与落叶叶片的多个相互作用，环内的容纳，由动态不平衡和叶片冲击产生的应力，以及它们对发动机支架的影响。在稳态条件下测试了新委托试验台的成功运行，我们能够以高效且成本有效的方式展示钻机的适用性和刀片脱落和遏制试验。

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