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时间:2011-03-26 00:09来源:蓝天飞行翻译 作者:admin
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 4 Air Data Reference (ADR) input
_ Each ADR receives two intercommunication buses from the other ADRs for cross channel comparison purpose.
 (b) Analog inputs
 1 Total Air Temperature (TAT) input
_ The ADR measures the resistance of the sensing element of the TAT sensor (Ref. 34-11-00). The ADR subtracts a fixed value function of system number from the measured input resistance to compensate for aircraft wiring resistance.
 2 Angle of Attack (AOA) inputs
_ (Ref. Fig. 001) The ADR receives two resolver inputs for angle of attack computation. The following requirements apply to the analog resolver inputs:
 -load: 15 kilohms minimum
 -reference: 26V, 400 Hz (same as AOA)
 -transformer ratio: 0.415 nominal plus or minus 10 %
 -phase shift: 24 deg. leading
 -source impedance: Zro = A + jB A less than 315, B less than 725 Zso = C + jD C less than 150, D less than 165
 -electrical range input: plus or minus 60 deg.
R 1EFF : 001-049, 101-105, 151-199, 201-203, 1 34-13-00Page 3 1 1 Config-1 May 01/05 1 1 1CES 1


 AOA/ADR Wiring
 Figure 001

R 1EFF : 001-049, 101-105, 151-199, 201-203, 1 34-13-00Page 4 1 1 Config-1 May 01/05 1 1 1CES 1 3 Analog baro correction inputs


_ The ADR receives three resolver inputs for analog baro correction (from the altimeter for example). These inputs are not used.
 (c) Discrete inputs (Ref. Table 3) For pin assignment, Ref. 34-12-00. The ADR is provided with the following input discretes:
 ----------------------------------------------------------------| INPUT SIGNAL | INPUT | INPUT DEFINITION | ----------------------------------------------------------------| ADR ARINC Filter Select | Open/GND | Type A/Type B | | CFDS Message Select | Open/GND | Active/ Not Active | | SDI LSB (Middle Insert) | Open/GND | 0/1 | | SDI MSB (Middle Insert) | Open/GND | 0/1 | | Pitot Probe Ht Disc | Open/GND | No Fault/Fault | | Right Static Ht Disc | Open/GND | No Fault/Fault | | Left Static Ht Disc | Open/GND | No Fault/Fault | | TAT Ht Disc | Open/GND | Off/On | | AOA 1 Ht Disc | Open/GND | No Fault/Fault | | AOA Average/Unique | Open/GND | Average/Unique | | VMO/MMO Disc 1 | Open/GND | No/Yes | | VMO/MMO Disc 2 | Open/GND | No/Yes | | VMO/MMO Disc 3 | Open/GND | No/Yes | | VMO/MMO Disc 4 | Open/GND | No/Yes | | SSEC Alternate Disc A | Open/GND | No/Yes | | SSEC Alternate Disc B | Open/GND | N0/Yes | | AOA Alternate Disc 1A | Open/GND | Off/On | | AOA Alternate Disc 1B | Open/GND | Off/On | | AOA Alternate Disc 2A | Open/GND | Off/On | | AOA Alternate Disc 2B | Open/GND | Off/On | | Baro Port "A" | Open/GND | Port B/Port A | | Zero MACH SSEC | Open/GND | Use SSEC/Ignore SSEC | | Zero AOA SSEC | Open/GND | Use SSEC/Ignore SSEC | | AIR FRM ID Code 1/0 | Open/GND | No/Yes | | AIR FRM ID Code 2/0 | Open/GND | No/Yes | | AIR FRM ID Code 4/0 | Open/GND | No/Yes | | AIR FRM ID Code 8/0 | Open/GND | No/Yes | | AIR FRM ID Code 16/0 | Open/GND | No/Yes | | AIR FRM ID Code 32/0 | Open/GND | No/Yes | | AIR FRM ID Code 64/0 | Open/GND | No/Yes | | AIR FRM ID Code Parity | Open/GND | No/Yes | | ADR Remote Test | Open/GND | No Test/Test | | ADR OFF DISCR Input | Open/GND | Released/Pressed | | Dual Baro | Open/GND | Sgl Port/Dual Port | | Baro Analog/Digital Sel.| Open/GND | Digital/Analog |
R 1EFF : 001-049, 101-105, 151-199, 201-203, 1 34-13-00Page 5 1 1 Config-1 May 01/05 1 1 1CES 1 ----------------------------------------------------------------| INPUT SIGNAL | INPUT | INPUT DEFINITION | ----------------------------------------------------------------| Baro Corr. 3 Active | Open/GND | Not Active/Active | ----------------------------------------------------------------


Table 3 - Discrete Input Signal
 NOTE : "Open" means either a high logic voltage level or the
____ "binary zero" state. "GND" means either a low logic voltage level or the "binary one" state.
 1 ADR ARINC Filter Select discrete
_ This discrete is used to select the characteristics of the ADR output filter. Two sets of characteristics are available: Open/Ground = Type A/Type B Type A : No filtering except for the Altitude Rate (3dB filter bandwidth : 0.17 Hz) The A/C is defined with the ADR ARINC filter select discrete open.
 2 CFDS Message Select discrete
_ Open = CFDS message. When open, this discrete is used to select and display fault messages.
 3 Source Data Identifier (SDI) program pins
_ These discretes code the installation side of the ADIRU. This item of information is used to choose the appropriate correction laws (for Static Source Error Correction (SSEC) and corrected angle of attack). The following table gives the ADR side according to the SDI:
 --------------------------------------------------------| DEBOUNCED STATUS | | | |-----------------------------| SDI | ADIRU | | SDI-MSB | SDI-LSB | CODE | NUMBER | |------------------------------------------------------|
 
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