NVG Flashcards
Describe anvis
The equipment is a precision electro-optical instrument
Anvis is a passive light amplification system that intensifies light how much?
6000 times
The object lense is what class
Class b
Whats the best visiual acuity attainable with the anvis 9
Between 20/20 and 20/25
Will anvis correct for astigmatism
No
Do nvg’s magnify?
No 1:1
Anvis field of view
40°
Anvis break away capability
10-15g
What is monochromatic
Single color viewing, nvgs do not provide color discrimination
What batteries can you use
1.5v AA alkaline or lithium but do not mix. Do not use rechargeable
Whats the life of 2 alkaline batteries
50 to 55hr
What can you clean the goggles with
Lense paper or lense brush
Max counter weight amount
Do not exceed 22oz, weight above 5.5 is discouraged
Main monocular components
A. Objective lense
B. Image intensifier
C. Eyepiece lense
Image intensifier components
A. Photocathode B. Microchannel plate C. Phosphor screen D. Power supply E. Fiber optic inverter
What percentage of people in the army are stupid?
60%
Objective lense-
An optical element that gathers light and can be focused for the distance of an object
Image intensifier-
An electro optical device that detects and amplifies light to produce a visual image
Photocathode-
Converts incoming light energy (photons) into electrical energy (electrons)
Microchannel plate-
A thin wafer that increases the number and velocity of electrons
Phosphor screen-
Converts electrons to photons
Power supply function-
Provides power(obvi) also provides automatic brightness control and bright source protection
Fiber optic inverter-
A bundle of microscopic light transmitting fibers twisted 180°
Eyepiece lense-
Focus the image from the fiber optic inverter onto the eye
How much batteey time is left when low battery laight illuminates
Approximately 30 minutes
What are the possible visual deficiencies of the anvis
Shading Edge glow Flashing/flickering Black/bright spots Chicken wire Honeycomb
Anvis must be inspected
180 days
What is a goggle operation
Anything 1hr after sunset 1hr before sunrise that uses goggles in an aircraft thats approved for those operations.
Nvg recency operating experience (time)
A pic can carry passengers if theyve completed the required tasks within the 2 months preceding the month of the flight
You may act as pic if youve completed the tasks with the preceding 4 months
61.57 nvg operating experience tasks
3 take off and landings 3 hovering tasks 3 departures and arrivials 3 transitions 6 operations 135 operators are required to do this in same category, class, type
A050 aircraft visual inspection and operational check
Inspect-
Windows for cleanliness
All instruments and panels
All internal and external lights
Required within preceding 60 days
Nvg weather mins in class g
Non mountainous
Local-800/3 cc-1000/3
Mountainous
Local-1000/3 cc-1000/5
