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ALCS Flashcards

1
Q

What does ALCS stand for?

A

Airborne Launch Control System

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2
Q

Describe ALCS.

A

a secure, hardened, electronic missile launch and control system.

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3
Q

The Airborne Launch Command Control (ALCC) consists of _____.

A

ALCS & UHF C3

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4
Q

What is the function of ALCS?

A

to allow the ALCC to act as a secure, alternative control center for the selective programming and launch of the Minuteman and Peacekeeper (ICBM) force; act as an airborne relay station

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5
Q

Where is the ALCS Processor located?

A

C1 cabinet ALCS bay

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6
Q

What are the power requirements for the ALCS Processor?

A

115 VAC 400 Hz from PROC c/b/ on E42-2

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7
Q

What is the function of the ALCS Processor?

A

to provide overall control of all ALCS functions

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8
Q

What does the ALCS Processor do to complete the system recovery when a nuclear event is detected?

A

Powers down; Powers up; Performs a self-test routine; Reloads the boot-block to reboot the system; Loads the AOP/S

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9
Q

What two operational software programs does ALCS utilize?

A

Airborne Operational Program (AOP)

Airborne Operational Program/ Secure (AOP/S)

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10
Q

The ALCS Controller is made up of _____.

A

ALCS Processor & ALCS Interface Unit

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11
Q

What is the function of the ALCS Controller?

A

performs status gathering, launch control, and targeting functions & controls the ALCS in support of Peacekeeper and Minuteman Weapon Systems

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12
Q

Where are the Mass Storage Device/ Loader (MSD/L) and Portable Storage Unit (PSU) located?

A

C1 cabinet, accessible through Battlestaff Compartment

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13
Q

What are the power requirements for the Mass Storage Device/ Loader (MSD/L)?

A

115 VAC 400 Hz from MSD/L c/b on E42-2

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14
Q

What is the function of the Mass Storage Device/ Loader (MSD/L)?

A

receive commands from ALCS Controller;
read & TX data from PSU to ALCS Controller;
support loading of programs & data into ALCS Controller memory

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15
Q

The Mass Storage Device/Loader (MSD/L) houses _____.

A

PSU; read/write electronics, timing, & logic control; interface drivers & receivers; a power supply

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16
Q

Where are the Multifunction Selectors (MFS) located and how many are there?

A

2 total

Right-hand Battlestaff console

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17
Q

What are the power requirements for the Multifunction Selector (MFS)?

A

115 VAC 400 Hz & 28 VDC from Display Set Controller

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18
Q

What is the function of the Multifunction Selector (MFS)?

A

to provide the means for the primary operator to interface with the ALCS

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19
Q

Where are the Visual Display Units (VDU) located and how many are there?

A

2 total
Right-hand Battlestaff console
SIOP Advisor & ALCS Officer stations

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20
Q

What are the power requirements for the Visual Display Unit (VDU)?

A

115 VAC 400 Hz from Display Set Controller

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21
Q

What is the function of the Visual Display Unit (VDU)?

A

to provide a data/launch key interface for acceptance of logic data from the ALCS Controller

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22
Q

Where are the Display Set Controllers located and how many are there?

A

2 total

C1 cabinet

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23
Q

What are the power requirements for the Display Set Controllers?

A

115 VAC 400 Hz from DSC 1 & 2 c/bs on E42-2

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24
Q

What is the function of the Display Set Controller?

A

perform the timing and control function for the MFSs and the VDUs

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25
What components does the Display Set Controller interface with?
ALCS Controller; MFSs; VDUs; ALCS Keyboard
26
Where is the KI-45 located?
C1 cabinet, accessible through Battlestaff compartment
27
What are the power requirements for the KI-45?
+7.9 VDC from CRPS
28
What is the function of the KI-45?
decrypt the Minuteman & Peacekeeper launch-critical command codes (mode A); encrypt or decrypt Peacekeeper Target Constants Generation (TCG) or Peacekeeper message data (mode B)
29
Where is the Volatile Keying Assembly (VKA) located and how may are there?
2 total; A & B | in KI-45
30
What are the power requirements for the Volatile Keying Assembly (VKA)?
+7.9 VDC from CRPS
31
What is the function of the Volatile Keying Assembly (VKA)?
to act as classified crypto elements that are used to store crypto-variable information
32
Where is the ALCS Printer located?
Right-hand Battlestaff console
33
Describe the ALCS Printer?
33 characters/line; 2000 lines/minute; standard 64 character ASCII subset is printed in dot matrix format; dry, electrostatic, & nonimpact printing process; paper roll is 150' long & 4" wide
34
What are the power requirements for the ALCS Printer?
115 VAC 400 Hz from PRT c/b on E42-2
35
What is the function of the ALCS Printer?
to provide a hard copy historical output of in-flight mission functions; TCG constants sets status, TCG case inputs, & equivalent fault log
36
Where is the ALCS Keyboard located?
Right-hand Battlestaff console
37
What are the power requirements for the ALCS Keyboard?
+5 VDC from either Multifunction Selector (MFS)
38
What is the function of the ALCS Keyboard?
to act as a data entry device when it is connected to either MFS
39
Where is the Waveform Converter located?
C1 cabinet
40
What are the power requirements for the Waveform Converter?
+5 VDC, +15 VDC, -15 VDC, +28 VDC from ALCS Power Supply
41
What is the function of the Waveform Converter?
to process all ALCC I/O; convert digital data generated by the ALCS Controller to either diphase, biphase, or FSK mode for transmission
42
Where is the Demodulator/Decoder located?
C1 cabinet
43
What are the power requirements for the Demodulator/Decoder?
+5 VDC, +15 VDC, -15 VDC, +28 VDC from ALCS Power Supply
44
What is the function of the Demodulator/Decoder?
to process the uplink & downlink status messages received by the R/T
45
Where is the Tempest Isolation Filter located?
C1 cabinet
46
What are the power requirements for the Tempest Isolation Filter?
+15 VDC, -15 VDC, +5.1 VDC from Waveform Converter
47
What is the function of the Tempest Isolation Filter?
to prevent inadvertent transmission of classified data
48
Where is the ALCS Power Supply located?
C1 cabinet
49
What are the power requirements for the ALCS Power Supply?
115 VAC 400 Hz from ALCS PS c/b on E42-2
50
What is the function of the ALCS Power Supply?
convert 115 VAC aircraft power into regulated DC power & to provide +5 VDC, +15 VDC, -15 VDC, & +28 VDC to the ALCS Power Control Panel, Demodulator/Decoder, & Waveform Converter
51
Where is the Code Retaining Power Supply (CRPS) located?
C1 cabinet
52
What are the power requirements of the Code Retaining Power Supply (CRPS)?
115 VAC 400 Hz from CRPS c/b on E42-2
53
What is the function of the Code Retaining Power Supply (CRPS)?
to convert aircraft AC power to a regulated +7.9 VDC for ALCS processor equipment
54
What happens if input power to the Code Retaining Power Supply (CRPS) is lost?
an internal battery supplies output power to the ALCS processor equipment for up to 3 minutes
55
Where is the ALCS Power Control Panel located?
Right-hand Battlestaff console/ ALCS officer's position
56
What are the power requirements for the ALCS Power Control Panel?
28 VDC from ALCS Power Supply
57
What is the function of the ALCS Power Control Panel?
to control input power, using 28 VDC power; toggle relays to apply power to E42-2
58
Where is the ALCS Consent Switch located?
fwd right-hand Battlestaff console/ AEAO position
59
What are the power requirements for the ALCS Consent Switch?
Passive
60
What is the function of the ALCS Consent Switch?
to work in conjunction with the KI-45 CCC/ENABLE switch to allow for the encryption of encrypted secure codes & the transmission of classified commands
61
Where is the 70 MHz Select Switch (I Box) located?
C2 cabinet
62
What are the power requirements for the 70 MHz Select Switch (I Box)?
28 VDC from MODE SEL c/b on P30 DISTR 2
63
What is the function of the 70 MHz Select Switch (I Box)?
interface the UHF C3 with ALCS; completes the 70 MHz RF selection and access circuit
64
What are the power requirements for the ALCS Interface Unit?
115 VAC 400 Hz from I/O AND MEM c/b on E42-2

ACOM/IFT CAT 1 (27 decks)

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