Night Flying

Question 1

What is the acronym to remember the visual illusions on goggles and what does each letter mean?

Answer 1

FFF-CRASH-SAR-CL+H

Question 2

What illusions are associated with FFF?

Answer 2

False horizon
Flicker vertigo
Fixation

Question 3

What illusions are associated with CRASH?

Answer 3

Confusion with ground lights (stars or lights?)
Relative motion (Other lights/long grass move and you feel like you’re moving)
Autokinesis (single light apparent motion)
Size/distance (hard to tell)
Height (Hard to tell)

Question 4

What illusions are associated with SAR-CL+H

Answer 4

Structural illusion (rain/snow)
Altered plains of reference (ridge line become false horizon)
Reversible perspective (difficult to judge other A/C motion)
-
Crater effect
Lack of motion parallax (feels like mot moving over featureless terrain)
+
Hypersteropsis

Question 5

What additional equipment is brought to the aircraft during night flying?

Answer 5

Head torch + tape
Finger light

Question 6

What visual illusions are associated with TopOwl systems?

Answer 6

Crater effect
Hypersteropsis
Automatic gain control
Halos