NVG ACRONYMS

Question 1

Visual Illusions

Answer 1

FFCVASHCASSS
False horizons
Fascination/fixation
Confusion w/ground light
Vection
Aerial perspective
Structural Illusion
Height Depth Perception
Crater Illusion
Autokinesis
Size Distance Illusion
Size Constancy
Shape Constancy

Question 2

Dark Adaptation

Answer 2

DSSTT
Definition - The Process when eyes become more sensitive to low levels of illumination
Starting Level
Sensitivity
Time to Adapt (30 to 45 min)
Time to Readapt (Several to 45 min or longer depending on brightness, duration, or after repeated exposures)

Question 3

Night Visual Limitations and Techniques

Answer 3

SOS
Scanning
Off Center Vision
Shapes and Silhouettes

Question 4

Terrain Flight Planning and Safety

Answer 4

AMPSDFWC
Analyze the mission
Map/photo recon
Primary/alt routes
Select Modes of flight/movement techniques
Determine distance, ground speed, ETE
Fuel Required
Weather briefing
Crew Briefing

Question 5

Describe Wind Recognition

Answer 5

GACF
Ground Indicators
Aircraft Indicators
Cockpit Indicators
Forecast vs Actual winds

Question 6

Hazards to Terrain flight

Answer 6

MPH
Meteorological
Physical - Natural / Man-made
Human

Question 7

Fundamentals of Recon

Answer 7

GORRDDE
Gain and maintain enemy contact
Orient on the recon objective
Report all info rapidly and accurately
Retain the freedom of maneuver
Develop the situation rapidly
Don't keep recon assets in reserve
Ensure continuous recon

Question 8

Select Landing Zone/Pickup Zone

Answer 8

LONGLASSV
Landing Formation
Obstacles
Number and type of AC
Ground Slope
Load suitability
App and Departure direction
Size of landing area
Surface condition
Vulnerability

Question 9

Holding Area Recon

Answer 9

COKAS
Cover and Concealment
Obstacles
Key terrain
Avenues of approach/departure
Security

Question 10

Weather Shell Smart Book

Answer 10

Ceiling/Visibility (Launch=1000 &3, Recover=700&1)
Cloud Clearance
Winds, Shell smart book

Question 11

NVG Equipment Requirements

Answer 11

Found in AR 95-1 pg. 39 table 5-2

Question 12

Night Vision Protection

Answer 12

RSS
Red lighting/red lens goggles
Supplemental Oxygen
Sunglasses

Question 13

Night Vision Protective Measures

Answer 13

CEL (L=CAAT)
Cockpit lighting
Exterior Lighting
Light Flash Compensation
(L=CAAT)
Close one eye
Alter course
Automatic Weapons Fire
Turn away from lights

Question 14

NVG Characteristics

Answer 14

DIALVP
D=A helmet mounted, light intensification device.
Intensification (2000 to 3000 zero magnification
Acuity (20/25 best to 20/70 worst)
Limited Field of view (40* FOV
Voltage low indicator (Approx 30 min remain)
Power supply (AA alkaline or lithium, no mixing

Question 15

Night Central Blind Spot

Answer 15

CSP
Central or Night blind spot
Scotopic Vision
Peripheral Vision

Question 16

NVG Visual Deficiencies & Cosmetic Blemishes

Answer 16

VISUAL DEFICIENCIES=SEEF
Shading
Edge Glow
Emission points
Flashing/flickering

COSMETIC BLEMISHES= I2B2CFO

Image distortion
Image disparity
Bright spots
Black spots
Chicken wire
Fixed pattern noise (Honeycomb)
Output Brightness variation

Question 17

NVG Operational Considerations

Answer 17

CAL(PEAB) MWWAD(DATE) SOS
Color discrimination
Air/ground speed limits
Lights and Lighting
*Performance relations
*Effects of bright lights
*Automatic brightness control
*Bright Source protection

Magnification
Weather
Weapons
Aircraft lighting
Depth Perception and Distance estimation
*Degree
*acuity
*Type
*Experience

Scanning techniques
Obstruction Detection
Spatial disorientation

Question 18

NVG Effects on Distance estimation and Depth Perception

Answer 18

DATE GRAM
Degree of Contrast
Available light for acuity
Type of NVGs
Experience

Geometric perspective
Retinal image size
Aerial perspective
Motion Parallax

Question 19

Monocular cues

Answer 19

LAV

• Linear perspective
• Apparent foreshadowing
• Vertical Position