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Flashcards in ALCS Deck (64):
1

What does ALCS stand for?

Airborne Launch Control System

2

Describe ALCS.

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

3

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

ALCS & UHF C3

4

What is the function of ALCS?

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

5

Where is the ALCS Processor located?

C1 cabinet ALCS bay

6

What are the power requirements for the ALCS Processor?

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

7

What is the function of the ALCS Processor?

to provide overall control of all ALCS functions

8

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

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

9

What two operational software programs does ALCS utilize?

Airborne Operational Program (AOP)
Airborne Operational Program/ Secure (AOP/S)

10

The ALCS Controller is made up of _____.

ALCS Processor & ALCS Interface Unit

11

What is the function of the ALCS Controller?

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

12

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

C1 cabinet, accessible through Battlestaff Compartment

13

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

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

14

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

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

15

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

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

16

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

2 total
Right-hand Battlestaff console

17

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

115 VAC 400 Hz & 28 VDC from Display Set Controller

18

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

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

19

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

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

20

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

115 VAC 400 Hz from Display Set Controller

21

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

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

22

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

2 total
C1 cabinet

23

What are the power requirements for the Display Set Controllers?

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

24

What is the function of the Display Set Controller?

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

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