ADIRS - AOA Sensor
Figure 009
R 1EFF : 001-049, 101-102, 201-203, 1 34-11-00Page 28 1 1 Config-1 May 01/05 1 1 1CES 1
ADIRS - AOA Sensor Figure 009A
R 1EFF : 1 1 1CES 103-105, 151-199, 1 111 Page 2934-11-00 Config-1 May 01/05
AOA Sensors - Installation Definition
Figure 010
R 1EFF : 001-049, 101-105, 151-199, 201-203, 1 34-11-00Page 30 1 1 Config-1 May 01/05 1 1 1CES 1 ------------------------------------------------------------------------| | Indicated AOA: | +85 | +60 | +25 | 0 | -35 | | AOA 1 and AOA 3 |----------------------------------------------------| | in degrees | Resolver angle: | -60 | -35 | 0 | +25 | +60 | ------------------------------------------------------------------------| | Indicated AOA: | +85 | +60 | +25 | 0 | -35 | | AOA 2 |-----------------------------------------------------| in degrees | Resolver angle: | +60 | +35 | 0 | -25 | -60 | ------------------------------------------------------------------------The ADRs receive the same 26VAC, 400 Hz reference as the AOA resolvers. This reference is common to both AOA resolver inputs 1 and 2. Characteristics:
Excitation : 26 V 400 Hz
Phase shift : 18 deg. to 30 deg.
Resolver transformer :
ratio RT : 0.4029 to 0.4629
Rotor impedance : Zro = 125 + j175 ohms +/-20%
Stator impedance : Zso = 115 + j90 ohms +/-30%
Range : +/-60 deg.
Scale factor : 1 deg. resolver/1 deg. local AOA The accuracy of the AOA sensor, at 100 knots, is +/-0.3 deg.
R 1EFF : 001-049, 101-105, 151-199, 201-203, 1 34-11-00Page 31 1 1 Config-1 May 01/05 1 1 1CES 1R **ON A/C 001-049, 101-105, 151-199,
F. Selector Switches (Ref. Fig. 011) The two selector switches AIR DATA and ATT HDG are rotary selector switches with 3 positions: CAPT/3, NORM and F/O/3. These selector switches are used for the functions listed below (Ref. the respective section for more details):
-AIR DATA SEL SW (15FP):
34-14-00 Selection of the ADR used by the IR3
34-52-00 ATC mode S
31-68-00 DMC
22-85-00 FMGC
-ATT HDG SEL SW (13FP):
34-11-00 Power Supply
34-14-00 Selection of the ADR used by the IR3
34-41-00 Weather Radar
34-57-00 VOR/DME RMI
31-68-00 DMC
22-85-00 FMGC.
R 1EFF : 001-049, 101-105, 151-199, 1 34-11-00Page 32 1 1 Config-1 May 01/05 1 1 1CES 1
INTENTIONALLY BLANK
R 1 1
34-11-00Page 33
1 1 Config-1 May 01/05 1 1 1CES 1
ADIRS Switching
Figure 011
R 1EFF : 001-049, 101-105, 151-199, 201-203, 1 34-11-00Page 34 1 1 Config-1 May 01/05 1 1 1CES 1 **ON A/C 201-203,
F. Selector Switches (Ref. Fig. 011) The two selector switches AIR DATA and ATT HDG are rotary selector switches with 3 positions: CAPT/3, NORM and F/O/3. These selector switches are used for the functions listed below (Ref. the respective section for more details):
-AIR DATA SEL SW 15FP =
34-14-00 Selection of the ADR used by IR3
34-52-00 ATC mode S
31-68-00 DMC
22-85-00 FMGC
-ATT HDG SEL SW 13FP =
34-11-00 Power Supply
34-14-00 Selection of the ADR used by IR3
34-41-00 Weather Radar
34-57-00 VOR/ADF/DME RMI
31-68-00 DMC
22-85-00 FMGC.
1EFF : 201-203, 1 34-11-00Page 35 1 1 Config-1 May 01/05 1 1 1CES 1 SENSORS, POWER SUPPLY AND SWITCHING - DESCRIPTION AND OPERATION
_______________________________________________________________
1. General_______ The aircraft is equipped with three Air Data/Inertial Reference Units (ADIRUs). Each ADIRU receives data from the four types of sensors after:
-three pitot probes which provide total pressure data,
-six static probes which provide static pressure data,
-two Total Air Temperature (TAT) sensors which provide air temperature data,
-three Angle Of Attack (AOA) sensors which provide angle of attack data of
the aircraft. The TAT sensors and the angle of attack sensors are directly connected to the ADIRUs. The pitot probes and the static probes are connected to eight Air Data Modules (ADM) which convert pressure data before they send them to the ADIRUs. The sensors, the probes, the ADMs and the ADIRUs are power supplied as follows:
-------------------------------------------| EQUIPMENT | 28VDC | 115VAC | 26VAC | -------------------------------------------| ADIRU | X | X | X | |----------------|-------|--------|-------| | AOA Sensor | | X | X | |----------------|-------|--------|-------| | PITOT Probe | | X | | |----------------|-------|--------|-------| | TAT Sensor | | X | | |----------------|-------|--------|-------| | STATIC Probe | X | | | |----------------|-------|--------|-------| | ADM |13.5VAC from ADIRU | -------------------------------------------
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