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ILS basics

机译:他们的基础

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摘要

To many instrument-rated pilots, the Instrument Landing System (ILS) approach rates as the gold standard. ILS approaches have been reliably providing precision guidance to hundreds of runways around the world for the past 70-odd years, so when the weather turns seriously rotten it's the approach that pilots are most apt to request. That's reason enough for instrument-rated pilots to stay proficient flying ILSs, and for the noninstrument-rated to gain a working knowledge of the basics-just in case. The big value of the most common Category Ⅰ ILS approach is its ability to provide both lateral and vertical guidance to runways experiencing weather as low as 200-foot ceilings and/or one-half-mile visibilities. (Actually, the visibility is measured by runway visual range-RVR-transmissometers, which measure visibility along a portion of the runway's length.) However, those minimums are generalities. Nearby terrain or obstacles can push minimums higher, for example.
机译:对于许多仪表级飞行员而言,仪表着陆系统(ILS)接近费率作为黄金标准。在过去的70多年中,ILS进近一直可靠地为全球数百条跑道提供精确的制导,因此,当天气严重转坏时,这是飞行员最需要的方法。这足以使具有仪器等级的飞行员保持熟练的飞行ILS,并为非仪器等级的飞行员获得基本的工作知识,以防万一。最常见的Ⅰ类ILS方法的最大价值在于它能够为低至200英尺高的天花板和/或半英里的可视性的跑道提供横向和垂直引导。 (实际上,能见度是通过跑道视程RVR透射仪测量的,该仪沿跑道的一部分长度测量能见度。)但是,这些最小值是一般性的。例如,附近的地形或障碍物可能会将最小值推高。

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  • 来源
    《AOPA pilot》 |2015年第4期|80-82|共3页
  • 作者

    THOMAS A. HORNE;

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  • 正文语种 eng
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