NVG Flashcards

1
Q

What tool can help maintain aircraft control when hovering over low-contrast or disorienting surfaces?

A

In eye symbology: HUD/I-HUD/HDU

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2
Q

What component of the eye adjusts pupil size to allow light into the eye?

A

Iris

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3
Q

_____ cells are less effective as light levels decrease

A

Cone

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4
Q

Which type of vision is characterized by lack of color perception and required off center viewing?

A

Scotopic vision

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5
Q

Rhodopsin

A

30-45 minutes to buildup
Bleached out by bright light

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6
Q

How long does it take to recover dark adaptation due to exposure to a bright light?

A

5-45 minutes depending on duration and intensity of exposure

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7
Q

When is the lenses flexible?

A

When the individual is young

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8
Q

Where does the optic nerve enter the retina

A

The optic disk

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9
Q

What is the transition zone between photo pic and scotopic vision?

A

Mesopic vision

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10
Q

Dark adaptions takes how long?

A

30-45 min

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11
Q

How long is the night blind spot?

A

5-10 degrees

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12
Q

What information does motion parallax provide aviators?

A

Aircraft speed and direction of movement

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13
Q

How to clean dirty contacts using a ______

A

Pencil eraser

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14
Q

Which lense assembly contains the minus blue coating which filters out light from the aircraft instrument panel?

A

Objective lens

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15
Q

What item is used to clean the ANVIS electrical contacts?

A

Pencil eraser

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16
Q

What are the four Operational defects?

A

Shading
Edge glow
Emission points
Flashing/flickering and intermittent operation

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17
Q

On off switch is oriented

18
Q

You cannot mix what type of batteries

A

Alkaline and lithium

19
Q

What kind of batteries can you not use

A

Rechargeable batteries

20
Q

Primary batteries are on what side

21
Q

Low battery indicator

A

Re blinking light with 30 min remaining

22
Q

Max counterweight

23
Q

What is the only authorized counterweight

24
Q

Anvis

A

Passive system
1:1 magnification
40 degree FOV

25
Anvis may degrade above what temperature
100 degrees
26
Anvis Breakaway capability
10-15 g forces
27
Halo
Is electron backscatter
28
Rod cells
Rod photoreceptors are mainly responsible for low-light vision and night vision
29
Cone cells
They’re why the center of your visual field can see colors and other fine details.
30
What factors increase the likelihood of experience visual illusion or spatial D?
Degraded visual acuity, fatigue, high task loading, reduced FOV, and inexperience
31
Battlefield light sources can negatively impact the ANVIS image due to what power supply functions being activated?
Automatic brightness control (ABC) Bright source protection (BSP)
32
Effective use of monocular cues requires _____ and _____ in various terrain types and flight environments
Training and experience
33
What is the normal FOV of the human eye?
Approximately 120 degrees vertical and 200 degrees lateral
34
If ambient light levels unexpectedly decrease what indications may be present?
Scintillation, change in halo intensity, loss of celestial lights, loss of ground lights, noticeable loss of scene detail
35
When only two light sources are available to mark the LZ what is the minimum distance between the lights?
15 feet
36
What are the 5 mission planning command considerations?
Crew endurance, aircraft maintance, safety, facilities and planning cell
37
What is the landing zone or objective card for?
Reinforce map recon and provides a graphic picture of the LZ/PZ or objective
38
When possible members of the planning cell should be?
Excused from other duties and responsibilities during the planning phase
39
What is the first step if an aviator becomes disoriented during flight?
Locate and identify a prominent feature in the immediate area
40
How many types of routes planning cards are there?
3
41
When using supplemental lighting what color should the light be?
Blue-green