Bombardier-Challenger_00-Navigation庞巴迪挑战者导航
<P>Bombardier-Challenger_00-Navigation</P><P>**** Hidden Message *****</P> chanentjer<BR>OPERATING MANUAL<BR>SECTION 16<BR>NAVIGATION<BR>TABLE OF CONTENTS<BR>Subject Page<BR>GENERAL 1<BR>INDEPENDENT POSITION DETERMINING SYSTEMS 1<BR>Weather Radar<BR>Radio Altimeter Display 5<BR>Gyro Compass 8<BR>DEPENDENT POSITION DETERMINING SYSTEMS 11<BR>VHF Navigation<BR>VOR Mode<BR>ILS Mode<BR>Marker Beacon Receiver<BR>VOR Test Mode 12<BR>ILS Test Mode<BR>Flight Director Switching 19<BR>Automatic Flight Control System Interface<BR>Instrument Comparator<BR>Automatic Direction Finder<BR>VOR Interface 21<BR>Compass System Interface<BR>Distance Measuring Equipment<BR>ATC Transponder 22<BR>MISCELLANEOUS INSTRUMENTS 22<BR>Digital Clock<BR>LIST OF ILLUSTRATIONS<BR>Figure<BR>Number Title Page<BR>1 Indicator Controls (2 Sheets) 2<BR>2 Mode Display 4<BR>3 Radio Altimeter Display (2 Sheets) 6<BR>16 - CONTENTS<BR>Page 1<BR>Oct 03/83<BR>canadair<BR>chaiienper<BR>OPERATING MANUAL<BR>LIST OF ILLUSTRATIONS<BR>Figure<BR>Number Title Page<BR>4 Compass Control Panel (2 Sheets) 9<BR>5 NAV-1 Control Panel 13<BR>6 NAV-2 Control Panel 14<BR>7 Radio Magnetic Indicator 15<BR>8 Horizontal Situation Indicator ( 2 Sheets) 16<BR>9 Marker Lights with High/Low Switch 18<BR>10 ADF Control Unit 20<BR>11 Transponder Control Unit 23<BR>12 Digital Clock 24<BR>16 - CONTENTS<BR>Page 2<BR>Oct 03/83<BR>canatiair<BR>chanenejer<BR>OPERATING MANUAL<BR>SECTION 16<BR>NAVIGATION<BR>GENERAL<BR>There are two types of airborne navigation systems, the independent positioning<BR>determining systems (IPDS), and the dependent positioning determining systems<BR>(DPDS). The IPDS consists of three systems, weather radar, a radio altimeter,<BR>and a gyro compass. The DPDS consists of four systems, VHF navigation,<BR>automatic direction finding (ADF), distance measuring equipment (DUE), and an<BR>ATC transponder. Miscellaneous instruments are described in this Section.<BR>INDEPENDENT POSITION DETERMINING SYSTEMS<BR>A. Weather Radar (Figures 1 and 2)<BR>The weather radar is used for weather detection and analysis. A ground<BR>mapping mode is provided as a modified display. It has a three-colour<BR>presentation on a black background. Each colour represents a different<BR>level. A three-coloured bar legend display defines the meaning of each<BR>colour.<BR>WEATHER<BR>Level 3 Red Heaviest rainfall<BR>Level 2 Yellow Next heaviest rainfall<BR>Level 1 Green Least rainfall<BR>Black No reflective target<BR>GROUND MAPPING<BR>Level 3 Magenta Most reflective target<BR>Level 2 Yellow Next level of reflective target<BR>Level 1 Cyan Least level of reflective target<BR>The system consists of three line replaceable units, a receiver-transmitter,<BR>a digital indicator and an antenna pedestal with flat-plate radiator. All<BR>the system controls are on the front of the indicator (Figure 1).<BR>The system operates in the cyclic, weather and mapping modes. In the<BR>cyclic mode, high-level signals flash. In the weather mode, azimuth strobe<BR>lines, mode and range alphanumerics are displayed to assist in evaluating<BR>weather data. In the ground mapping mode, the display is available as a<BR>secondary source of navigational information.<BR>SECTION 16<BR>Page 1<BR>Oct 03/83<BR>canadair<BR>chauentj&r<BR>OPERATING MANUAL<BR>TARGET ALERT SWITCH/LIGHT<BR>When pressed enables target alert in WX<BR>mode only. Amber light comes on and T is<BR>displayed if there are no targets in the target<BR>alert sector. If there are targets TGT is<BR>displayed and flashes at 0.5 second intervals.<BR>FREEZE SWITCH<BR>When pressed, freezes the display<BR>and prevents updating. FRZ is<BR>displayed in the auxiliary field and<BR>flashes at 0.5 second intervals.<BR>AZIMUTH REFERENCE POINTS<BR>Provides azimuth reference points, in 30<BR>degree increments, to assist display analysis.<BR>SECTOR SCANNING SWITCH<BR>In normal position 120 degrees scanning selected.<BR>When pressed 60 degree scanning selected.<BR>AZIMUTH STROBE SWITCH<BR>When pressed azimuth strobe lines<BR>appear on the display.<BR>Indicator Controls SECTION 16<BR>Figure 1 (Sheet 1) Page 2<BR>May 28/82<BR>canadair<BR>chaiienQer<BR>OPERATING MANUAL<BR>'o<BR>WX (Weather mode)<BR>When pressed radar is in weather<BR>mode and WX is displayed.<BR>STANDBY MODE SWITCH<BR>Enables radar to be on without transmitting. During warmup<BR>period of 70 seconds WAIT is displayed, after which STBY is<BR>displayed.<BR>RANGE<BR>50 TOO 200<BR>| 2 5 . / >2fc<v300<BR>C\F SIVY V\X ClrX bh?<BR>CYCLIC MODE<BR>When pressed in WX or MAP mode high level targets flash at<BR>0.5 second intervals. CYC is displayed and AGC is<BR>automatically selected.<BR>MAP MODE<BR>When pressed radar is in ground mapping mode and MAP is<BR>displayed.<BR>•DDDD TILT<BR>STAB<BR>RANGE/TEST SWITCH<BR>Provides six range positions from 10 to 300 nautical miles. In<BR>TEST position displays a test pattern.<BR>ON~^T^~OFF<BR>GAIN CONTROL<BR>In PRESET automatic gain control is applied to the receiver.<BR>Out of PRESET manual gain is available.<BR>TILT CONTROL<BR>Controls angle of antenna beam tilt with<BR>regard to earth plane.<BR>INTENSITY CONTROL<BR>Controls intensity of the display.<BR>STABILISATION<BR>ON/OFF control of antenna stabilisation.<BR>Indicator Controls SECTION 16<BR>Figure 1 (Sheet 2) Page 3<BR>May 28/82<BR>cana&air<BR>ctiaiisnQer<BR>OPERATING MANUAL<BR>STANDBY MODE WX MODE WITH TARGET ALERT DISPLAYED<BR>MAP MODE CYCLIC MODE<BR>.<BR>FRZ<BR>LTEST<BR>.—-^M-—<BR>~ *<BR>^J^<BR>/ - - • • • > . - •<BR>x<BR>:<BR>• ^ T3M|<BR>3<BR>60<BR>TEST PATTERN IN WX MODE TEST PATTERN IN MAP MODE<BR>Mode Display<BR>Figure 2<BR>SECTION 16<BR>Page 4<BR>May 28/82<BR>canadair<BR>chauentjer<BR>OPERATING MANUAL<BR>The antenna is stabilized in line of sight and controlled by a vertical<BR>gyro in pitch and roll. A tilt control enables any desired antenna beam<BR>angle between +15 degrees. This includes any elevation correction made by<BR>the stabilizing circuits. When the 60-degree SEL SCAN is selected the<BR>antenna scans at 28 scans per minute, and at 14 scans per minute in the<BR>120-degree SEL SCAN.<BR>Radio Altimeter Display (Figure 3)<BR>The radio altimeter consists of a receiver-transmitter, a radio altimeter<BR>indicator, a transmit antenna and a receive antenna. The radio altimeter<BR>display is shown in Figure 3 (Sheet 1).<BR>For aircraft 1021 and subs,<BR>the radio altimeter display is shown in Figure 3 (Sheet 2 ).<BR>The receiver-transmitter transmits a frequency modulated continuous wave<BR>(FM/CW) signal. The receiver receives a ground reflected signal and<BR>produces a signal with a frequency proportional to aircraft altitude.<BR>If the signal is strong enough to provide accurate data, it is translated<BR>into a dc analogue voltage which is fed to the RAD ALT indicator to drive<BR>the pointer display. The indicator sends a validity signal to the flight<BR>director computer. The dc analogue voltage is also fed to altitude trip<BR>circuits in the receiver-transmitter to provide gain programming to the<BR>autopilot during ILS approach (refer to SECTION 4, AUTOMATIC FLIGHT CONTROL<BR>SYSTEM).<BR>If the strength of the signal is not sufficient to provide accurate<BR>altitude data, a bias voltage is sent to the RAD ALT indicator to drive the<BR>pointer off scale, and send a warning signal to the flight director<BR>computer.<BR>A decision height knob, DH, allows the pilot to set a desired altitude.<BR>When the aircraft descends to this height, DH annunciators on the RAD ALT<BR>indicator and both attitude director indicators come on. The system,<BR>excluding the antenna, may be tested with the self-test switch on the<BR>indicator. A simulated 50-feet signal checks the accuracy of the system.<BR>If the DH index is set below 50 feet the DH annunciators come on.<BR>On aircraft 1021 and subs,<BR>the radio altimeter display is included as part of the attitude director<BR>indicator (ADI). The receiver-transmitter and the antennas are the same as<BR>in the basic aircraft.<BR>The four-digit, incandescent display on the ADI indicates the aircraft<BR>radio altitude from -20 to 2500 feet. Resolution above 200 feet of<BR>altitude is 10 feet and below 200 feet resolution is 5 feet. For altitudes<BR>above 2500 feet, the display is blanked. When the radio altitude data is<BR>invalid, the display indicates a dash in each digit.<BR>SECTION 16<BR>Page 5<BR>Oct 03/83<BR>canadair<BR>chauenQer<BR>OPERATING MANUAL<BR>DH ANNUNCIATOR<BR>Comes on when aircraft reaches the decision<BR>height.<BR>ALTITUDE POINTER<BR>FLAG<BR>When in view indicates system<BR>malfunction.<BR>DISPLAY SCALE<BR>-20 to 2500 ••*<<BR>SELF TEST<BR>When pressed initiates self test.<BR>RADIO ALTIMETER INDICATOR<BR>DH SET KNOB<BR>To adjust the DH index<BR>EFFECTIVITY: A/C 1004 TO 1020<BR>Radio Altimeter Display<BR>Figure 3 (Sheet 1)<BR>SECTION 16<BR>Page 6<BR>Apr 4/83<BR>canaaair<BR>chaiiencjer<BR>OPERATING MANUAL<BR>DECISION HEIGHT<BR>DISPLAY<BR>RADIO ALTITUDE<BR>TEST SWITCH<BR>ATTITUDE DIRECTOR INDICATOR<BR>"RADIO ALTITUDE<BR>DISPLAY<BR>DECISION HEIGHT<BR>SET KNOB AND<BR>DIM CONTROL<BR>EFFECTIVITY: A/C 1021 & SUBS<BR>Radio Altimeter Display<BR>Figure 3 (Sheet 2)<BR>SECTION 16<BR>Page 7<BR>Apr 4/83<BR>canaaair<BR>chanencier<BR>OPERATING MANUAL<BR>A composite control knob on the ADI provides for setting decision height<BR>and adjusting display brightness* The inner knob, DH SET, is used to set<BR>an altitude between 0 and 990 feet on the decision height (DH) display.<BR>The outer knob, DIM, controls the brightness of the RAD ALT and DH displays.<BR>Decision height on the ADI is indicated on a three-digit incandescent<BR>display and indicates the preselected radio altitude between 0 and 990 feet<BR>that is set by the DH knob. Display resolution is 10 feet. When the<BR>aircraft is at or below the decision height, the DH annunciator comes on to<BR>warn the pilot.<BR>A radio altitude (RA) test switch is used to initiate a test sequence.<BR>When the RA test switch on the ADI is pressed, the test sequence on the ADI<BR>RAD ALT and DH displays is initiated.<BR>The RAD ALT display, during the test, initially shows four-eights, then<BR>changes to four-dashes and finally changes to the test altitude. The test<BR>altitude remains on the RAD ALT display until the test switch is released,<BR>then the actual altitude is displayed.<BR>The DH display, during the test, initially shows three-eights and then<BR>reverts to the current set DH value for the remainder of the test.<BR>The test sequence is inhibited after the ADI GS mode annunciator comes on<BR>(APR CAP engage).<BR>C. Gyro Compass<BR>The compass system provides a continuous magnetic heading reference for<BR>aircraft navigation. It is a dual system consisting of two flux valves, a<BR>dual compensator, two directional gyros, two control panels and two<BR>synchronizer assemblies.<BR>The flux valves are magnetic azimuth detectors that sense the direction of<BR>the horizontal component of the earth's magnetic field relative to the<BR>longitudinal axis of the aircraft.<BR>The dual compensator electrically compensates for single-cycle error. The<BR>two gyros and amplifier assemblies provide gyro stabilized heading<BR>references for the horizontal situation indicators (HSI), the radio<BR>magnetic indicators (RMI), navigation receivers and the autopilot.<BR>Both control panels contain a mode switch, a slew switch and a null meter.<BR>Operation of the compass controls is described in Figure 4.<BR>SECTION 16<BR>Page 8<BR>Oct 03/83<BR>canadair<BR>chaiiencier<BR>OPERATING MANUAL<BR>DG/SLAVED SWITCH<BR>Controls mode of operation of the system.<BR>DG —Directional gyro in free mode.<BR>SLAVED—Directional gyro controlled by flux<BR>valve.<BR>Displays synchronization error between the<BR>flux valve heading and the gyro heading.<BR>When system is synchronized, the pointer is<BR>in the central position.<BR>SYNCH SWITCH<BR>Switch is slewed to synchronize gyro with the flux valve.<BR>EFFECTIVtTY: A/C 1004 TO 1020<BR>Compass Control Panel<BR>Figure 4 (Sheet 1)<BR>SECTION 16<BR>Page 9<BR>Oct 03/83<BR>canadair<BR>chauenQer<BR>OPERATING MANUAL<BR>MODE SWITCH<BR>Controls mode of operation of the system.<BR>DG - Directional gyro in free mode.<BR>SLAVED - Directional gyro controlled by flux valve.<BR>COMPASS CONTROLS<BR>DG<BR>SLAVED<BR>SYNCH SWITCH<BR>Switch is slewed to synchronize gyro<BR>with the flux valve.<BR>EFFECTIVITY : A/C 1021 & SUBS<BR>Compass Control Panel SECTION 16<BR>Figure 4 (Sheet 2) page 10<BR>Oct 03/83<BR>canaaair<BR>chaiiencier<BR>OPERATING MANUAL<BR>DEPENDENT POSITION DETERMINING SYSTEMS<BR>A. VHF Navigation (Figures 5, 6, 7 and 8)<BR>The VHF navigation system is a dual receiving system (NAV-1 and NAV-2) and<BR>operates in two modes, VHF omnirange (VOR) for enroute navigational<BR>guidance, and instrument landing system (ILS) for terminal guidance. The<BR>ILS consists of a localiser (LOC) receiver and a glidescope (GS) receiver.<BR>A marker beacon receiver is provided for distance-to-runway threshold<BR>information.<BR>The VOR mode is operational when a VOR frequency is set on the navigation<BR>control unit and ILS is operational when a LOC frequency is set on the<BR>navigation control unit. The GS frequency is paired to the LOC frequency<BR>and is automatically tuned. The marker beacon receiver is operational in<BR>both modes.<BR>(1) VOR Mode<BR>NOTE: The following description applies to both systems. Only NAV-1<BR>is described.<BR>When the navigation receiver is tuned to a VOR frequency, the received<BR>signal is processed to produce an aural signal to identify the station<BR>received, a deviation signal and a bearing signal. The aural signal<BR>is fed to the intercom system and the bearing signal is fed to the<BR>pilots1 HSI and RMI to drive the bearing pointer. A deviation signal<BR>is fed to the HSI and the flight director computer, and a TO/FROM<BR>signal to the HSI. A flag circuit monitors the output of the receiver<BR>and provides a validity signal.<BR>(2) ILS Mode<BR>The ILS mode provides terminal guidance using ground station localiser<BR>and glideslope transmitters. The received LOC deviation signal is fed<BR>to the course deviation bar on the pilot's HSI and the received GS<BR>deviation signal is fed to the vertical deviation pointer on the ADI.<BR>The receiver also provides LOC validity and GS validity signals which<BR>are fed to the flight director computer and to the HSI and ADI warning<BR>flags.<BR>(3) Marker Beacon Receiver (Figure 9)<BR>The marker beacon receiver provides visual and aural indication of the<BR>position of the aircraft when flying over the marker beacon radio<BR>SECTION 16<BR>Page 11<BR>Oct 03/83<BR>canadair<BR>chaiienQer<BR>OPERATING MANUAL<BR>stations. As the aircraft passes the markers, an aural tone and an<BR>indicator light signal are produced as follows:<BR>MARKER LIGHT<BR>Outer OUTER (blue)<BR>Middle MIDDLE (amber)<BR>Inner AIRWAY (white)<BR>A HIGH/LOW switch adjacent to the lights controls the sensitivity of<BR>the marker beacon receiver.<BR>VOR Test Mode<BR>NOTE: The receiver is set to a VOR frequency and the course selector<BR>to approximately five degrees prior to testing.<BR>When the TEST switch on the NAV control unit is held in the NAV<BR>position and a VOR signal is present the following occurs: the HSI NAV<BR>mode flag remains out of view, the TO/FROM flag indicates TO and the<BR>course deviation bar centres. The RMI pointer indicates between 0 and<BR>5 degrees magnetic bearing. The three marker lights flash and an<BR>aural tone is heard through the headphones/speaker.<BR>When the TEST switch is released, the HSI NAV mode flag comes into<BR>view within one second and goes out of view within 5 seconds. The<BR>marker lights stop flashing and the system returns to the pretest<BR>condition.<BR>If there is no VOR signal present when the test switch is set to NAV,<BR>the HSI NAV mode flag goes out of view after three seconds and the<BR>TO/FROM flag indicates TO. The RMI indicates between 0 and<BR>5 degrees magnetic bearing. The marker lights flash and an aural tone<BR>is heard through the headphones/speaker. When the TEST switch is<BR>released, the HSI NAV mode flag comes into view, the RMI pointer parks<BR>and the marker lights go out within one second.<BR>ILS Test Mode<BR>When the TEST switch is in the NAV position with a LOC signal present<BR>the following occurs; the HSI NAV mode flag stays out of view, the<BR>lateral deviation bar deflects one dot to the right and the GS<BR>deviation bar moves down one dot. The ADI GS deviation pointer moves<BR>down one dot and the expanded localizer pointer moves out of view to<BR>the right. The three marker lights flash and an aural tone is heard<BR>through the headphones/speaker.<BR>SECTION 16<BR>Page 12<BR>Oct 03/83<BR>canaaair<BR>chanenQer<BR>OPERATING MANUAL<BR>NAV-1 FREQUENCY DISPLAY<BR>Displays frequency chosen for the NAV-1<BR>system. The DME-1 operates on the same frequency<BR>unless DME HOLD has been set prior<BR>to altering the NAV-1 frequency.<BR>DME-1 HOLD PUSH SWITCH<BR>When set to HOLD, the amber light comes on<BR>and the DME-1 frequency holds to enable the<BR>NAV-1 frequency to be altered without affecting<BR>the DME frequency.<BR>NAV-1 DME-1<BR>FREQUENCY SELECTOR<BR>Controls NAV-1 and DME-1 operating<BR>frequency.<BR>Selector for tenths and hundreths of MHz<BR>Selector for tenths and units of MHz.<BR>VOLUME CONTROL ON/OFF SWITCH<BR>Switches NAV-1 and DME-1 on/off and<BR>controls volume of the audio signal to the<BR>headphones.<BR>TEST SWITCH<BR>Selects self test of NAV-1 or DME-1 system.<BR>DME-1 STATUS SWITCH<BR>In STBY power is applied to the DME-1<BR>system but no transmission takes place. In<BR>the NORM position the DME-1 system is fully<BR>operational.<BR>NAV-1 Control Panel<BR>Figure 5<BR>SECTION 16<BR>Page 13<BR>Oct 03/83<BR>canadair<BR>ctiauencjer<BR>OPERATING MANUAL<BR>DME-2 HOLD PUSH SWITCH<BR>When set to HOLD the amber light comes on<BR>and the DME-2 frequency holds to enable the<BR>NAV-2 frequency to be altered without affecting<BR>the DME frequency.<BR>NAV-2 FREQUENCY DISPLAY<BR>Displays frequency chosen for NAV-2<BR>system. The DME-2 system operates on the<BR>same frequency unless DME HOLD has been<BR>set prior to altering the NAV-2 frequency.<BR>NOTE<BR>The COMM-2 controls are described<BR>in Section 6.<BR>DME-2 STATUS SWITCH<BR>In STBY, power is applied to the DME-2<BR>system but no transmission takes place.<BR>In the NORM position the DME-2 is fully<BR>operational.<BR>NAV-2 DME-2<BR>FREQUENCY SELECTOR<BR>Selector for tenths and units of MHz.<BR>tenths and hundreths of MHz.<BR>VOLUME CONTROL ON/OFF SWITCH<BR>Switches NAV-2 and DME-2 on/off and<BR>controls volume of the audio signal to the<BR>headphones.<BR>TEST SWITCH<BR>.Self test NAV-2 or DME-2 systems.<BR>NAV-2 Control Panel<BR>Figure 6<BR>SECTION 16<BR>Page 14<BR>Oct 03/83<BR>canadair<BR>chaiienQer<BR>OPERATING MANUAL<BR>. O k \ i /ilCD<BR>SINGLE BAR POINTER<BR>Indicates VOR or ADF bearing.<BR>COMPASS CARD<BR>Indicates aircraft<BR>magnetic heading.<BR>FORE LUBBER LINE<BR>DOUBLE BAR POINTER<BR>indicates VOR or ADF bearing.<BR>SINGLE BAR SWITCH<BR>Selects ADF or VOR on single<BR>bar pointer.<BR>AFT LUBBER LINE<BR>OFF FLAG<BR>When in view indicates<BR>system malfunction.<BR>DOUBLE BAR SWITCH<BR>Selects ADF or VOR on double<BR>bar pointer.<BR>Radio Magnetic Indicator<BR>Figure 7<BR>SECTION 16<BR>Page 15<BR>Oct 03/83<BR>canatJair<BR>chaHencjer<BR>OPERATING MANUAL<BR>COURSE<BR>DEVIATION BAR<BR>VERTICAL<BR>WARNING FLAG<BR>HEADING DIAL<BR>RECIPROCAL<BR>COURSE<BR>POINTER<BR>EFFECTIVITY: A/C 1004 TO 1020<BR>DME<BR>SWITCH<BR>BEARING SELECT<BR>PUSHBUTTONS<BR>Horizontal Situation Indicator<BR>Figure 8 (Sheet 1)<BR>SECTION 16<BR>Page 16<BR>Oct 03/83<BR>chaiienQer<BR>OPERATING MANUAL<BR>,0\t<BR>&=S<BR>COURSE FORE<BR>SELECT LUBBER<BR>POINTER LINE<BR>TRUE HEADING<BR>HEADING WARNING<BR>ANNUNCIATOR FLAG<BR>DISTANCE<BR>DISPLAY<BR>NAVIGATION<BR>SOURCE<BR>ANNUNCIATORS'<BR>WAYPOINT<BR>ANNUNCIATOR"<BR>VERTICAL<BR>DEVIATION .<BR>POINTER<BR>COURSE<BR>DEVIATION<BR>BEARING<BR>' SELECT<BR>PUSHBUTTON<BR>' NAVIGATION<BR>WARNING FLAG<BR>* COMPASS<BR>SYNC<BR>ANNUNCIATOR<BR>AIRCRAFT RECIPROCAL AFT RECIPROCAL<BR>SYMBOL BEARING LUBBER COURSE<BR>POINTER LINE POINTER<BR>TO-FROM<BR>ANNUNCIATOR<BR>EFFECTIVITY: A/C 1021 & SUBS<BR>Horizontal Situation Indicator SECTION 16<BR>Figure 8 (Sheet 2) Page 17<BR>Oct 03/83<BR>canaaair<BR>chaiienper<BR>OPERATING MANUAL<BR>AIRWAY MIDDLE OUTER<BR>HIGH<BR>LOW<BR>Marker Lights with High/Low Switch<BR>Figure 9<BR>SECTION 16<BR>Page 18<BR>Oct 03/83<BR>chanencier<BR>OPERATING MANUAL<BR>When the TEST switch is released the HSI NAV mode flag comes into view<BR>within one second goes and out of view within five seconds. The<BR>marker lights go out and the system returns to the pretest condition.<BR>If there is no LOC signal present when the TEST switch is in the NAV<BR>position, the HSI NAV mode flag goes out of view after three seconds,<BR>the lateral deviation bar moves one dot and the expanded localizer<BR>pointer moves out of sight to the right. The marker lights flash and<BR>an aural tone is heard through the headphones/speaker.<BR>When the TEST switch is released the HSI NAV mode flag comes into view<BR>within one second, the lateral bar centres, the ADI GS deviation<BR>pointer parks and the expanded localizer pointer centres. The marker<BR>lights go out.<BR>(6) Flight Director Switching<BR>A two position switch on the flight director switching panel labeled<BR>CAPT FLT DIR, switches the pilot's flight director navigational<BR>information from NAV 1 in the normal position, to NAV 2.<BR>(7) Automatic Flight Control System Interface<BR>The navigation system is interfaced with the automatic flight control<BR>system through the NAV, APR and VORAPR switch/lights on the flight<BR>director mode selector (refer to Section 4).<BR>(8) Instrument Comparator<BR>The instrument comparator monitors compass heading information used by<BR>NAV-1 and NAV-2 system, localiser signals and glidescope signals.<BR>Should a predetermined difference be exceeded, individual<BR>annunciators, HD6, GS and LOC come on (refer to Section 4).<BR>Automatic Direction Finder (Figure 10)<BR>The ADF provides aural reception from selected ground stations and<BR>indicates relative bearing to that station. The station selected may be a<BR>non-directional beacon or standard AM broadcast station in the frequency<BR>range 190 to 1749.5 kHz.<BR>The major units in the system are the combined sense and loop antenna, a<BR>receiver, and two radio magnetic indicators. There are three selectable<BR>switch positions:<BR>ANT - Audio reception with RMI parked<BR>ADF - Audio reception with RMI providing bearing<BR>Tone - Beat frequency oscillator (BFO) in addition to ANT or ADF to<BR>enable CW reception.<BR>SECTION 16<BR>Page 19<BR>Oct 03/83<BR>canaaair<BR>chauencjer<BR>OPERATING MANUAL<BR>ADF<BR>FREQUENCY<BR>DISPLAY<BR>FREQUENCY<BR>CONTROL<BR>VOLUME<BR>CONTROL<BR>BFO<BR>CONTROL<BR>SWITCH<BR>ADF<BR>ON/OFF<BR>SWITCH<BR>TEST SWITCH<BR>Operates in ADF only<BR>MODE SWITCH<BR>ADF — provides audio<BR>and directional<BR>data.<BR>ANT — provides audio<BR>only.<BR>ADF Control Unit<BR>Figure 10<BR>SECTION 16<BR>Page 20<BR>Oct 03/83<BR>cacntiaaduaeinr qar<BR>OPERATING MANUAL<BR>With the ADF switched on and the frequency tuned to the desired station the<BR>system functions as follows:<BR>In the ANT mode, the mode switch is in the ANT position to disable the<BR>loop antenna circuits and the BFO switch is set to OFF. The signal<BR>received by the sense antenna is fed to the receiver as an RF signal<BR>with no bearing information. The receiver processes the signal and<BR>passes it as an audio signal to the intercom system. As there is no<BR>bearing information the RMI pointer is parked in the horizontal<BR>position.<BR>In the ADF mode, the mode switch is in the ADF position and the BFO is<BR>off. Signals from the sense and loop antenna are sent to the receiver<BR>as radio frequency signals carrying bearing information. This is<BR>processed by the receiver which sends an audio output to the intercom<BR>system and bearing information to the pilot!s RMI, the pilot's HSI.<BR>the copilot's RMI and the copilot's HSI.<BR>In the tone mode, the BFO is included in the ADF or ANT mode to<BR>receive CW signals for station identification.<BR>The self-test facilities can only be operated in the ADF mode. When the<BR>test switch is operated the pointer rotates 90 degrees counter-clockwise<BR>from the existing position and returns when the test switch is released.<BR>A 1000-Hz tone is sent to the intercom system.<BR>(1) VOR Interface<BR>When the VHF NAV system is in the NAV mode the VOR sends a bearing<BR>signal to the RMIs. Two VOR/ADF switches mounted on the front of the<BR>indicator permit VOR or ADF bearing information to be displayed on the<BR>single bar and double bar pointers.<BR>(2) Compass System Interface<BR>When the compass system is valid, a validity signal is sent to the RMI<BR>and the heading flag is cleared. Magnetic heading is also fed to the<BR>RMI compass card which displays the aircraft heading against a fixed<BR>lubber line.<BR>Distance Measuring Equipment<BR>The DME is a dual system consisting of two DME receiver-transmitters and<BR>two antennas. When the DME is on in the NORM position, a coded<BR>interrogation signal is transmitted to the ground station, the ground<BR>station sends back a coded reply. The DME receives the signal and<BR>calculates the slant distance to the ground station from the time between<BR>the transmitted signal and the received signal. An analogue voltage<BR>SECTION 16<BR>Page 21<BR>Oct 03/83<BR>canadair<BR>chaiiencjer<BR>OPERATING MANUAL<BR>proportional to the slant distance is fed to the HSI as distance in<BR>nautical miles, to the flight director computer for gain programming and to<BR>the VNAV computer/controller for vertical navigation computations. The<BR>receiver section also uses the analogue voltage to produce a DME valid<BR>signal when the system is functioning correctly and the ground station is<BR>in range. If a valid signal is not available, dashes appear on the<BR>distance display on the HSI.<BR>A DME-l/DME-2 switch, on the pilot's instrument panel, permits the pilot to<BR>select which system feeds the pilot's HSI, the flight director computers<BR>and the VNAV computer. The copilot does not have this facility.<BR>A test switch, NAV/DME, on the NAV-1 and NAV-2 control units, allows the<BR>associated DME to be tested. When the test switch is set to DME, the<BR>distance display on the HSI reads either 000.0 or 000.1.<BR>D. ATC Transponder (Figure 11)<BR>The transponder (TRP) provides air traffic control (ATC) with coded<BR>identification and altitude data.. The system consists of two<BR>transponders, two antennas and one control unit. When the transponder is<BR>selected to operate in mode A, only the selected code identification signal<BR>is transmitted. When mode C is selected, aircraft altitude is added to the<BR>identification signal. The identification code is set on the control unit<BR>and the altitude data is fed to the transponder when the ALT/OFF switch is<BR>in the ALT position.<BR>On receipt of an interrogation signal the TRP tests the validity of the<BR>received signal. If it is in mode A or mode C, it responds with the<BR>appropriate coded information. Each time the TRP replies the REPLY lamp<BR>comes on for one second. If requested by ATC the pilot can momentarily<BR>press the IDENT push switch, to extend the transmitted reply to 20 seconds.<BR>The TEST push-button switch tests mode A if the ALT/OFF switch is in the<BR>OFF position and mode C if in the ALT position. The REPLY lamp will come<BR>on to indicate the system is functioning correctly.<BR>MISCELLANEOUS INSTRUMENTS<BR>A. Digital Clock<BR>The digital clock is described in Figure 12.<BR>SECTION 16<BR>Page 22<BR>Oct 03/83<BR>canadair<BR>chauenQer<BR>OPERATING MANUAL<BR>IDENTIFICATION CODE WINDOW<BR>Displays identification code.<BR>IDENTIFICATION CODE SWtTCHES<BR>Outer switch sets first digit, inner switch sets<BR>second digit.<BR>IDNT PUSH-BUTTON SWITCH<BR>When pressed transmits identification code for 20-seconds.<BR>REPLY LIGHT<BR>Comes on for one second when reply signal is transmitted or<BR>on completion of test.<BR>IDENTIFICATION CODE SWITCHES<BR>Outer switch sets fourth digit, inner switch<BR>sets third digit.<BR>^ ^<BR>TEST PUSH-BUTTON SWITCH<BR>Tests mode A when ALT/OFF switch is in<BR>OFF position. Tests mode C when ALT/OFF<BR>switch is in ALT position.<BR>TRANSFER SWITCH<BR>In position 1 No 1 system is on and No 2 system is in standby.<BR>In position 2, No 2 system is on and No 1 system is in stand-<BR>ALTITUDE DATA CONTROL<BR>ALT-provides altitude data for mode C reply<BR>signal.<BR>STATUS SWITCH<BR>OFF - both systems off.<BR>STBY - both systems in standby.<BR>ON - system selected by transfer<BR>switch on,other system in standby.<BR>Transponder Control Unit SECTION 16<BR>Figure 11 Page 23<BR>Oct 03/83<BR>canadair<BR>chanentjer<BR>OPERATING MANUAL<BR>SET SWITCH<BR>UP - advances clock one second for each<BR>second held.<BR>D - retards clock one second for each second<BR>held.<BR>BRIGHT/DIM SWITCH<BR>B - brightens display.<BR>DIM - dims display.<BR>1 HR UP - advances time one hour when held<BR>and released.<BR>@XUP(0)D B(Q)1HR<BR>SET niMUK<BR>l LP i<BR>ZERO /T^<BR>HOURS AND MINUTES DISPLAY<BR>TIME SWITCH<BR>TIME - displays selected standard time.<BR>F.T. - displays flight time.<BR>E.T. - displays elapsed time.<BR>SECONDS DISPLAY ELAPSED TIME SWITCH<BR>RUN - starts elapsed time meter.<BR>STOP - stops elapsed time meter.<BR>ZERO - returns elapsed time meter to zero when held<BR>and released. Also returns flight time meter to zero<BR>when the aircraft is on the ground.<BR>Digital Clock<BR>Figure 12<BR>SECTION 16<BR>Page 24<BR>Oct 03/83 很好的资料!
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