每日一词｜飞行控制伺服阀Flightcontrolservovalves(5)

伺服阀种类
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Appearance
Servo valves used in flight control systems may be constructed from stainless steel and have mounting swivels at either end. Hydraulic and electrical connections will be found on the side of the device. Position indicators provide feedback signals to the flight computer and may be available through a separate electrical connector.
Flight control servo valves are fairly robust pieces of equipment but they have sensitive position indicator mechanisms attached or built into the case. Typical packaging includes cardboard or wooden boxes. They are securely attached to the shipping container to avoid movement and probably packed in foam shaped like the part. They are often wrapped in a moisture-proof bag.
外观
飞行控制系统使用的伺服阀可以用不锈钢制造，可在任意一端安装转环。伺服阀旁边通常是液压和电气连接装置。位置指示器向飞行计算机提供反馈信号，可通过独立的电连接器获得。
飞行控制伺服阀属于坚固器件，但其内置的位置指示器机构十分敏感。常用硬纸板箱或木箱进行包装。这些器件通常会被牢牢固定在运输集装箱内，以免来回移动，并且可能用与其形状比较相似的泡沫进行包装。一般情况下，还用防潮袋包裹。
来源：2017年MTCR附件手册