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Avionics Flashcards

Screw you, Roy (68 cards)

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1
Q

What is CAAS? Specifically, because fuck you.

A

CAAS is designed to enhance situational awareness, reduce crew workload, and enhance flight safety
by integrating display monitoring and management of:
-primary flight instruments
-Engine
-sensor imagery,
-System performance data
-Digital maps
And communication/navigationmanagement on color displays through the use of unique LRUs

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2
Q

What are the 4 main LRU’s in CAAS, and what do they stand for? Also, what is an LRU anyway?

A

-MFD (multi function display)
-CDU (Color display unit)
-DCU (Data concentrator unit)
-GPPU (General purpose processing unit)

Line Replaceable Unit

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3
Q

What are the 5 main functions of the MFD?

A

-Aircraft systems
-Comms
-EICAS
-Tactical sensor video
-Flight/Nav symbology

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3
Q

How many CCPs is the MH-65E equipped with? What does CCP stand for?

A

2, stands for CAAS Control Panel

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4
Q

How many CDUs are there, and what does CDU stand for? Which CDU is for who?

A

2, Control Display Unit, and CDU 1 is for copilot and CDU2 is for pilot.

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5
Q

What is the function of the CDU? Specifically because fuck you twice.

A

Provide primary data input capability for CAAS systems management

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5
Q

What are the 7 functions of the CDU?

A

-Comms
-Nav
-Nav sensor controls
-Tests
-Status Updates
-Sensor control
-Flight management

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6
Q

How many GPPUs does CAAS have, and what does GPPU stand for?

A

2, General Purpose Processing Unit

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7
Q

What do the GPPUs do?

A

Provide signal CONVERSION and ROUTING services for the video inputs and sensors on the aircraft

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8
Q

What is the VPM, and what does it do?

A

Video Processing Module.
provides conversion and routing services for video inputs and sensors

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8
Q

What power do the GPPUs run on? How exactly are they powered?

A

115 VAC, by routing that power through #1/#2 AC bus into PSM (processing switch module)1/2, which then goes to the GPPUs.

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9
Q

What is 115 VAC changed into once it goes into the PSM?

A

24VDC

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10
Q

What is the PSM, and what does it do?

A

Processor switch module
-provides NCS (network comms services)
-ethernet switching
-processes digital map data

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11
Q

What is different between GPPU 1 and GPPU 2?

A

GPPU 1 is the only one with a VPM

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12
Q

How many DCUs are there, and what does DCU stand for? (better get this one right)

A

2, Data Concentrator Unit

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13
Q

What is the function of the DCUs?

A

Provide signal conversion and data concentrator functions for non-MILSTD-1553B or non-Ethernet compatible systems prior to transmission to the CDUs

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13
Q

What all sensors do the DCUs accept?

A

-Engine sensors
-aircraft sensors
-all avionics equipment requiring redundant interfaces

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14
Q

When the DCU is converting a signal, it is going from ___ to ___.

A

Analog to digital

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15
Q

What kind of power do the DCUs receive?

A

28VDC

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16
Q

How many DTUs does the MH-65E have, and what does DTU stand for?

A

1, Data Transfer Unit

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17
Q

How many slots are there in the DCU, and what are they?

A

-Mission (like flight plans)
-Map
-Maintenance
-NAVDB

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17
Q

What is special about the NAVDB card?

A

The NAVDB card must be loaded on deck, and cannot be removed in flight

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18
Q

During normal operation, the SFI battery is powered by ____ to charge/maintain full capacity.

A

28VDC

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18
Q

What kind of power does the DTU run on?

A

28VDC

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19
What does SFI stand for?
Standby Flight Instrument
20
What is the function of the SFI?
Provide redundant, secondary display of -attitude -altitude -airspeed -Vertical speed -slip/skid, -heading
21
The SFI is redundantly powered by from the ___ ___ and a ___ ___ ___ ___.
Battery Bus, Self Contained Backup Battery
22
What are the 4 components of the SFI?
-ASU (aerosonic sensing unit) -MSU (Magnetic Sensing Unit) -Backup Battery -Display Unit
23
What is the function of the SFI ASU?
Computes: -Gyro heading -Attitude -Barometric correct altitude -Indicated airspeed -instantaneous vertical speed -Slip/skid
24
What does inputs does the ASU accept to do its computations?
Pitot and Static pressure input
24
The ASU provides sensor data for display on the DU at airspeeds greater than ___ KIAS.
20KIAS
24
What is an LRU?
Line Replaceable Unit
24
What is the function of the MSU, and what does MSU stand for?
Magnetic Sensing Unit, MSU provides magnetic heading data
25
Where is the MSU located?
Right side of the tail boom
26
What happens to the SFI in the event of a power failure in flight?
The backup battery automatically sends power to the SFI
26
What is the minimum time that the SFI will remain operational during an emergency?
30 Minutes
27
What is the VOLT/LOAD METER?
A way to monitor A/C and D/C power sources from the cockpit.
27
What does AFCS stand for?
Automatic Flight Control System
28
What axes does AFCS provide control of?
Pitch, Roll, Yaw, and Collective
29
What are the AFCS trim switches for?
Trim switches on the AFCS panel disengage automatic inputs from the EGI, allowing pilots to make changes directly.
29
What functions does AFCS provide?
-Attitude/heading hold capability -Automatic slip/slide prevention -Automatic Trim
30
Where can the AFCS receive commands from?
FDS (flight director system) when coupled
31
What does an EGI do? (good luck pt.2)
Provide outputs for: -Linear and angular acceleration/velocity -Position -Platform azimuth -Pitch and roll attitude -True and magnetic heading -Time tags -Body angular rates -Universal Time Coordinated
31
What does EGI stand for (good luck bro)
Embedded Global Positioning System/Inertial Navigation System
32
What does the MON indication do on the IFF/COMM/ELT panel?
-Push to test, turn to dim -System malfunction if displayed/getting an interrogation signal that it is unable to respond to -Displays when in standby
32
What does the IDENT indication do on the IFF/COMM/ELT panel?
Causes IFF R/T to respond with an IDENT pulse train for 15/30 seconds
33
What does the EMERG indication do on the IFF/COMM/ELT panel?
Set IFF to emergency mode
34
What does the ZERO ALL indication do on the IFF/COMM/ELT panel?
Erases Mode 5 codes. DO NOT EVER FUCKING TOUCH!
34
What frequencies can the ELT transmit on?
406MHz, 121.5, 243.0 as resonance
35
What's the deal with system 1 and system 2?
Respective ADCs only get theirs, so if there's a discrepancy you know. SFI gets #2
35
How many components are in the Air Data System?
-Pitot heads -Static ports -Temperature sensors -Tubing and drains -ADC 1/2 -ASU
36
What is the copilots primary ADC?
ADC 1
36
How many ADCs, what does ADC stand for, and where are they?
Air Data Computer, 2 of them, in the AVI rack
36
What do the ADCs do?
Convert pitot-static pressure, barometric pressure, and temperature to AIRINC 429 data for the DCUs and MFDs
37
What is the pilots primary ADC?
ADC 2
37
Where all does pitot tube pressure get routed to?
-HAS 751 -ADC 1/2 -ASU -Drain lines
38
What is the purpose of the static bypass switch?
If it is believed that both static ports are blocked, the switch can send cabin internal pressure to ADC2
39
What is the function of the ICU? What does it stand for?
Interface Control Unit -Receive 1553B data -Triggers internally generated aural warnings -Sends warnings digitally to the LPCAP
40
Where all does static pressure get routed?
-HAS 751 -ADC 1/2 -ASU -Drain lines
41
What does the LPCAP do, and what does it stand for?
Low Profile Control Audio Panel. Interface for crew to communicate with each other and other audio systems.
41
How many LPCAPs are there, and what does LPCAP stand for?
Low profile control audio panel, 4
41
What can be done with an LPCAP?
-Control Audio -Use ICS -Radio comms control -Radio nav control -Aural alerts -Interface with VFDR
42
What is the ICU?
Interface Control Unit
42
How many ICS jacks are there?
6, 2 controlled by LPCAP 3 and 4
43
What should be done during Mayday?
-IFF EMERG mode -Transmit aircraft parameters every 120 seconds
44
What does putting IFF in EMERG do?
-Activates AATS mayday mode (increased rate of position reporting) -Changes brevity code which, -Notifies USSTRATCOM -Notifies JFFT (joint friendly force tracking) -Notifies MMC, who then -Notifies USCG OPCOM
44
What should be transmitted during mayday, and channel should it be transmitted on? (good luck 3)
Channel 16. Every 120 seconds. -Call sign -Registration -Owner -Function -Status -Make -Model -Lat/Long -Speed -Heading -Altitude -Time
45
What is the benefit of sterile cockpit procedures?
Minimizes distractions during critical phases of flight
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