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A typical approach and landing operation is described. The microwave landing system (MLS) is then examined, its design characteristics and how it works are shown, and how the MLS design fulfils the user's operational requirements by protecting the guidance signal from reflected signal interference is highlighted. MLS angle system accuracy is discussed in great detail, and its reliability, integrity, and coverage volume are briefly considered. MLS availability at any runway to all aircraft types and their landing scenarios, which is accomplished using narrow scanning beam antennas, is examined 相似文献
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用分级淬火油来控制工件变形好富顿国际公司Ｒ．Ｊ．ＢＲＥＮＮＡＮ分级淬火油这个名词是１９４２年首先提出来的。它是指将钢件由奥氏体状态放到温度比Ｍｓ略高一点的介质中进行淬火。钢件放在其中的时间恰好使各部分温度平衡，随后放在空气中冷却，从而减少表面和芯部转... 相似文献
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