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Radionavigation instrument - Removal / Installation Figure 201 AAAA Validity:OPTION 34-50 00Page 202 (BA) FEB 00 NAV 1 INSTALLATION DESCRIPTION AND OPERATION 1. GENERAL (Figure 1) The VOR is a short- and middle-range radio-navigation aid. It allows the pilot to locate the position of his aircraft with regard to a half-line crossing the VOR station (radial) or also to know the particular radial crossing the aircraft position. In ILS operation (landing aid), the system allows a continuous guidance in azimuth (LOC) and in elevation (GLIDE slope approach plane). The area navigation (RNAV) is a navigation method to fly from a point to another by following a selected course, but without having to fly towards another station. The selected course is defined by a waypoint. The waypoint is a predetermined geographic position located in a space covered by a VOR / DME station. The waypoint is defined by its radial and its distance at the VOR / DME station. The waypoint is often named phantom station, because it provides the same navigation information as a VOR / DME station, which would be located on the waypoint. The optional system consists of the following elements : - an integrated navigation system, - an optional VOR signal separator, - an optional GS signal separator, - a VOR / LOC antenna, - a GS antenna, - an optional DME warning indicator, - an optional course deviation indicator (CDI). Aircraft equipped with HSI option In this case, the CDI is not installed and the system uses the horizontal situation indicator (HSI) of the heading reference system as indicator - refer to 34-21-00. Aircraft equipped with GPS option interfaced with HSI In this case, the CDI is not installed and the system sends VOR / LOC, RNAV and GS data through a switching unit (relays) to the HSI, using a NAV 1 / GPS switch annunciator - refer to 34-57-00. All In RNAV mode, the system operates jointly with the DME installation - refer to 34-55-00. The NAV 1 installation is connected with : - the audio control box - refer to 23-11-00, - the optional radio magnetic indication system - refer to 34-25-00, - the optional autopilot system - refer to 22-10-00. AGAG Validity : KNS 81 34-51 00Page 1 pi) FEB 00 ANTENNE GS GS ANTENNA ANTENNE VOR VOR ANTENNA } INSTALLATION DME DME INSTALLATION ( 34 - 55 - 00 ) VERS INDICATEUR D'ECART DE ROUTE OU HSI ( 34 - 21 - 00 ) OU ENSEMBLE DE COMMUTATION HSI ( 34 - 57 - 00 ) TO COURSE DEVIATION INDICATOR OR HSI ( 34 - 21 - 00 ) OR HSI / SWITCHING UNIT ( 34 - 57 - 00 ) BOITE DE COMMANDE AUDIO 中国通航网 www.ga.cn 通航翻译 www.aviation.cn 本文链接地址:TB20 MAINTENANCE MANUAL 34 导航 TB20飞机维护手册 1(76) |