Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

NRCM Study Guide > NVG: Acronyms > Flashcards

NVG: Acronyms Flashcards

1
Q

Acronym for remembering Self Imposed Stressors

A

DEATH

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

DEATH

A

Drugs - Use only if Rx approved by Flight Surgeon

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

DEATH

A

Exaustion - Fatigue causes errors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

DEATH

A

Alcohol - reduces judgement and coordination

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

DEATH

A

Tobbaco - Increases CO2, Reduces O2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

DEATH

A

Hypoglycemia - Low Blood Sugar/Energy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Acyronym for remembering Visual Illusions

A

FFF CRASH SARC

(SCAR) May work to help remember last 4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

FFF CRASH SARC

A

False Horizon.

  • Confusing cloud formations or uneven ground w/ the horizon.
  • This is usually occurs when the aviator looks up after a prolonged period in the cockpit or from poor scanning technique.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

FFF CRASH SARC

A

Flicker Vertigo.

  • A light flickering at a rate of 4 to 20 cycles per second can produce nausea, vomiting & vertigo.
  • It can be caused by sunlight flickering through the rotor blades or by an anticollision light reflecting against an overcast sky at night.
  • DO NOT CLOSE your eyes, it will intensify the effect.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

FFF CRASH SARC

A

Fixation.

  • This occurs when aviators ignore orientation cues & fix their attention on a single goal or object without seeing the whole environment.
  • May occur during times of task saturation or target fixation.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

FFF CRASH SARC

A

Confusion.

A common occurrence is to confuse ground lights with stars.

A good cross check will prevent this illusion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

FFF CRASH SARC

A

Relative Motion.

  • Mistaking the motion of another aircraft or object for that of your own.
  • Could occur during formation flight, hover taxi, or hovering over water or tall grass.
  • The use of proper scanning techniques helps prevent this illusion.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

FFF CRASH SARC

A

Autokinesis.

  • When a static light is stared at in the dark for 6 to 12 seconds, the light appears to move up too 20 degrees in any direction.
  • Reduce or eliminate by visual scanning, increasing the number of lights, or by varying light intensity.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

FFF CRASH SARC

A

Structural illusion.

  • The distortion of objects caused by heat waves, rain, snow or other factors that obscure vision.
  • This illusion can be linked to mirages.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

FFF CRASH SARC

A

Height Perception Illusion.

  • When flying over terrain lacking good contrast (water, desert, snow), crew members may think the aircraft is higher or lower than it actually is.
  • This is due to a lack of visual references. It can be overcome by dropping an object of known size or intensity from the aircraft or by using shadows cast by surrounding objects or the aircraft.
  • At night drop a chem.-stick or flare before landing.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

FFF CRASH SARC

A

Size-Distance Illusion.

  • Viewing a source of light that is increasing or decreasing in luminance. The aviator may incorrectly interpret the light as approaching or retreating.
  • It also is the false perception of distance from an object or the ground.
  • It occurs when visual cues such as a runway or trees are different size than expected.
  • Shooting an approach to a large runway vs. a small stage field lane. On larger runways an aviator may perceive he is too low when landing.
17
Q

FFF CRASH SARC

A

Altered Planes of Reference

  • The pilot has an inaccurate sense of altitude, attitude, or flight path position in relation to an object so great in size that the object becomes the new plane reference.
  • When approaching a line of mountains or clouds, aviators may feel they need to climb even though their attitude is adequate.
18
Q

FFF CRASH SARC

A

Reversible Perspective.

  • At night, an aircraft may appear to be going away when it is actually approaching.
  • This illusion often occurs when an aircraft is flying a parallel course.
  • To avoid this illusion observe the lights. Red on right returning.
19
Q

FFF CRASH SARC

A

Crater Illusion.

  • Occurs when aircrew members land at night, under NVG conditions, and the IR searchlight is directed too far under the nose of the aircraft.
  • This will cause the illusion of landing with up-sloping terrain in any directions.
  • Depressing lulls the pilot into continuing to lower the collective. Could result in the aircraft prematurely impacting the ground, causing damage.
  • If observing another aircraft during hover taxi, the aviator may perceive that the crater actually appears to move with the aircraft being observed.
20
Q

Acronym for remembering Types Of Vision

A

PMS

21
Q

PMS

A

Photopic - Daylight, uses Cones

22
Q

PMS

A

Mesopic - Dusk/Dawn, uses Rods/Cones

23
Q

PMS

A

Scotopic - Night, uses Rods

24
Q

Acryonym to remember Distance Estimation

A

GLAVRKITOAFLLM

LAV

KITO

FLL

25
Q

GLAVRAM

A

Geometric Perspective - Shapes affect perception

Linear Perspective - Parallel lines converge in distance.

Apparent Foreshortening - Elliptical Shape

Vertical Position - High on horizon = farthest away

26
Q
A

Linear Perspective - Parallel Lines Converge

27
Q
A

Apparent Foreshortening -

Shapes change with perspective, often becoming eliptical in shape

28
Q
A

Vertical Perspective

Things higher on horizon are further away

29
Q

Definition and acryonym to remember Retinal Image Size

A

Retinal Image Size - Brain interprets image size

  • Known size of object - Associate familiar objects
  • Increasing/Decreasing size - Objects get big/little
  • Terresterial Association - Compare known w/ unknown
  • Overlapping - Overlapped object is farther
30
Q
A

Known size of object - Associate familiar objects

to gauge distance…

31
Q
A

Increasing/Decreasing Size

Object gets bigger as it gets closer

or

smaller as it moves farther away

32
Q
A

Terresterial Association

Compare known with unknown

I.e. We know how large ET is because we know how large a child is.

Or a tower next to a house…we can estimate heigth of tower.

33
Q
A

Overlapping - overlapped object is further away.

34
Q

Definition of Aerial Perspective

Acryonym to remember Aerial Perspective

A

Aerial Perspective - Clarity of Object tells distance from viewer.

Fading of Colors/Shades

Loss of details

Lights/Shadows

35
Q
A

Fading of Colors/Shades - Far Objects Fade

36
Q
A

Loss of Detail - Far objects have less detail

37
Q
A

Lights & Shadows - Use shadows for clues

38
Q

GRAM

A

Motion Parallelax

Far objects go by slow.

Near Objects go by fast

Looking out of window in car….near objects travel faster than far objects.

NRCM Study Guide (12 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions