时间：2011-08-28 11:47来源：蓝天飞行翻译 作者：航空 点击：次
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Automatic direction finder (ADF). Electronic navigation equipment that operates in the low- and medium-frequency bands. Used in conjunction with the ground-based nondirectional beacon (NDB), the instrument displays the number of degrees clockwise from the nose of the aircraft to the station being received. Automatic terminal information service (ATIS). The continuous broadcast of recorded non-control information in selected terminal areas. Its purpose is to improve controller effectiveness and relieve frequency congestion by automating repetitive transmission of essential but routine information. Aviation medical examiner (AME). A physician with training in aviation medicine designated by the Civil Aerospace Medical Institute (CAMI). AWOS. See automated weather observing system. Azimuth card. A card that may be set, gyroscopically controlled, or driven by a remote compass. Back course (BC). The reciprocal of the localizer course for an ILS. When .ying a back-course approach, an aircraft approaches the instrument runway from the end at which the localizer antennas are installed. Baro-aiding. A method of augmenting the GPS integrity solution by using a non-satellite input source. To ensure that baro-aiding is available, the current altimeter setting must be entered as described in the operating manual. Barometric scale. A scale on the dial of an altimeter to which the pilot sets the barometric pressure level from which the altitude shown by the pointers is measured. BC. See back course. Block altitude. A block of altitudes assigned by ATC to allow altitude deviations; for example, “Maintain block altitude 9 to 11 thousand.” Cage. The black markings on the ball instrument indicating its neutral position. Calibrated. The instrument indication compared with a standard value to determine the accuracy of the instrument. Calibrated ori. ce. A hole of speci.c diameter used to delay the pressure change in the case of a vertical speed indicator. Calibrated airspeed. The speed at which the aircraft is moving through the air, found by correcting IAS for instrument and position errors. |
