首页> 外文会议>2003 ASME(American Society of Mechanical Engineers) Turbo Expo; Jun 16-19, 2003; Atlanta, Georgia >ENHANCED TF40B GAS TURBINE ENGINE DESIGN CHANGES TO IMPROVE RESISTANCE TO THE LANDING CRAFT AIR CUSHION (LCAC) OPERATIONAL ENVIRONMENT
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ENHANCED TF40B GAS TURBINE ENGINE DESIGN CHANGES TO IMPROVE RESISTANCE TO THE LANDING CRAFT AIR CUSHION (LCAC) OPERATIONAL ENVIRONMENT

机译:改进的TF40B燃气轮机发动机设计更改,提高了对着陆工艺气垫(LCAC)运行环境的抵抗力

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摘要

The United States Navy Landing Craft Air Cushion (LCAC) vehicles, under the Service Life Extension Program (SLEP), use the Enhanced TF40B (ETF40B) gas turbine engines for main propulsion and lift. These engines provide the additional engine horsepower needed under high ambient temperature conditions, have an increase in operation reliability, and use modern digital engine control equipment. During craft operations, ETF40B engines are exposed to harsh saltwater and sand environments that will cause severe engine corrosion problems if corrosion resistant design features are not utilized. Proper material selection and utilization of anti-corrosion coatings are extremely important to ensure reliability of ETF40B engines on LCAC. This paper will document and outline the Navy's efforts to improve the ETF40B engine's resistance to the LCAC operating environment with a focus on the following components/features: 1. Carbon and Graphit Free Bushing and Washer Materials for Compressor Guide Vanes 2. Coatings between the Compressor Casing and Compressor Guide Vane Bushings 3. Use of a Silicone Rubber Abradable Material in the First 4 Stages of the Compressor 4. Use of Anti-Corrosion Coatings on all Compressor Guide Vanes and Stems.
机译:根据使用寿命延长计划(SLEP),美国海军登陆艇气垫(LCAC)车辆将增强型TF40B(ETF40B)燃气涡轮发动机用于主推进和提升。这些引擎提供了在高环境温度条件下所需的额外引擎马力,提高了操作可靠性,并使用了现代数字引擎控制设备。在飞机操作过程中,ETF40B发动机暴露于苛刻的盐水和沙子环境中,如果不使用耐腐蚀的设计功能,将导致严重的发动机腐蚀问题。正确选择材料和使用防腐蚀涂料对于确保LCAC上ETF40B发动机的可靠性至关重要。本文将记录并概述海军为提高ETF40B发动机对LCAC操作环境的抵抗力所做的努力,并着重于以下组件/特征:1.压缩机导流叶片的无碳无石墨衬套和垫圈材料2.压缩机之间的涂层机壳和压缩机导向叶片衬套3.在压缩机的前四个阶段中使用硅橡胶可磨耗材料4.在所有压缩机导向叶片和阀杆上使用防腐蚀涂层。

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