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SIGHTS > NVS > Flashcards

NVS Flashcards

1
Q

What are the two types of night vision devices available to crew members?

A

Image Intensifiers (I2) and Thermal Imaging (FLIR)

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2
Q

What is the purpose of Thermal Imaging systems?

A

To provide an IR image of a scene by detecting heat

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3
Q

What is the advantage of Thermal Imagers over Image Intensifiers?

A

No light is required to operate a thermal imager

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4
Q

What atmospheric elements affect the composition or density of the atmosphere and, therefore, affect IR signal transmission?

A

Moisture, Fog, Dust, Haze, and Smoke

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5
Q

What two factors create most of the Parallax Effect?

A

Angular difference between the M-PNVS and the HDU, and the distance from the item being observed. (Close-in at a 90 degree angle is the worst)

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6
Q

What function does the M-PTUR Receiver perform?

A

Converts infrared (IR) images to 16 analog outputs to the FLIR processor

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7
Q

What is the function of the M-PECA?

A

Amplifies azimuth and elevation commands and sends them to the drive motor to move the turret

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8
Q

What are the three types of Built-In-Tests (BITs)?

A

Start-Up (S-BIT), Continuous (C-BIT), and Initiated (I-BIT)

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9
Q

What causes frozen video?

A

Loss of video link communication

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10
Q

What does loss of bus communications results in?

A

Affected turret (M-TADS/M-PNVS) will move to fixed forward in 5 seconds

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11
Q

What causes cloud shifting?

A

Dynamic Range Compression and IR detector non-uniformity

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12
Q

How is the M-PNVS turned on?

A

WPN-UTIL Page
Automatically if initial power came from the APU Manually if using an AGPU

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13
Q

What is FLIR polarity?

A

FLIR polarity is a shade reversal effect applied to the FLIR in order to view an item more clearly. The resulting selection is referred to as “White Hot” and “Black Hot”.

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14
Q

How can a crew member tell what polarity their FLIR system is using?

A

Look at the sky (Clear Sky)
Sky Dark - White Hot
Sky Light - Black Hot

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15
Q

How can the crew member using the M-PNVS bring it out from the stowed position?

A

Placing the NVS Mode Switch into the NORM or FIXED position

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16
Q

What are the four considerations for FLIR optimization?

A

FLIR must be cooled
Scene rich in detail
Select a polarity
Only one control should be adjusted at a time

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17
Q

Which should be optimized first, the FLIR or the IHADSS?

A

IHADSS

18
Q

What is definition of FLIR optimization?

A

Using a combination of level and gain to achieve the best detail

19
Q

What is the primary objective of FLIR adjustment?

A

Obtaining the highest possible picture quality for the flight environment (obtaining a quality image).

20
Q

What two things should crew members ensure before they optimize the FLIR?

A

Ensure that the “NVS NOT COOL” or “ FLIR NOT COOL” message is no longer present and that the “ACM” is OFF

21
Q

When is an optimization required?

A

Required when the crew is going to use the FLIR for Flight, Laser Ops, and Weapons

22
Q

What establishes the FOV of the M-PNVS?

A

Afocal Assembly

23
Q

How can the crewmember in control of the M-PNVS
stow it?

A

Place the NVS Mode Switch to OFF

24
Q

What symbology is always presented on the M-PNVS display?

A

Flight

25
Q

What does the NORM position provide the pilot?

A

Provides M-PNVS video that is slaved to the pilot’s helmet mounted display (HMD).

26
Q

What does the FIXED position provide the pilot?

A

Provides the pilot with a M-PNVS that is fixed forward at 0 degree’s in azimuth and -4.9 degrees in elevation

27
Q

The M-TADS is divided into what two major sections?

A

M-DSA
M-NSA

28
Q

What must crews ensure on preflight for M-TADS operation?

A

Covers OFF – M-DSA Cover, M-NSA Cover, Boresight Module Cover

29
Q

Why is the M-TADS resolution not as good as the resolution of the M-PNVS?

A

M-TADS was not designed for Flight. It was designed for targeting. (M-TADS is a Medium Resolution FLIR) f/2.3 vs f/1.5

30
Q

What major components are located within each section of the TADS?

A

M-DSA= DTV, LST, LRFD
M-NSA= FLIR

31
Q

What is the fixed field of view of the M-TADS when used as a Sensor?

A

30 X 40

32
Q

What is the slew rate of the M-TADS?

A

60 degrees per second

33
Q

What are the two stow positions for the M-TADS when not in use?

A

TADS STOW 180º
TADS Alternate Stow: 0º Azimuth, 0º Elevation and not being used as a Sight or Sensor

34
Q

Which crewmember can stow the M-TADS?

A

CPG

35
Q

How can a crewmember select the opposite sensor?

A

NVS Mode switch other than OFF (IE: NORM or FIXED), NVS Select Switch to selected sensor

36
Q

Can the pilot always select M-TADS from the CPG?

A

YES

37
Q

Can the CPG always select M-PNVS from the pilot?

A

YES

38
Q

If both crewmembers are using a sensor, what happens if either crewmember selects the NVS Select Switch on the Collective Flight Grip?

A

Sensors swap

39
Q

How can a crewmember select the imagery to view?

A

Boresight switch on collective

40
Q

How long does it take for the camera shutter to open on the ground when selecting the fused mode?

A

2 seconds

41
Q

What mode must the system be in to optimize I²TV?

A

Fused

42
Q

What controls are used to optimize I²TV?

A

Level for brightness, Gain for size.

SIGHTS (3 decks)

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