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NVS 6
MANUAL
Page
1
1 General
1.1 The NVS 6, helicopter night-vision goggles, have been
designed for use by the helicopter crewmembers during execution of
flights at night.
Note – The helicopter cockpit should be tailored for the use of the
night-vision goggles. Accounting for the spectral content of the light
equipment radiation, color of the cockpit interior surfaces, and the like.
1.2 The NVS 6 provides napping off the earth while piloting the
helicopter at low altitudes, at takeoff, hovering and landing, including
landing on unprepared and non-illuminated landing sites.
1.3 When using the NVS 6, the pilot can take the readings of the
instruments by looking at the instrument panel in the downward direction
or sideways past the eyepieces.
1.4 The NVS 6 operates within the ambient temperature range of
minus 40 to +40
o
C.
1.5 The power supply to the NVS 6 is powered by the helicopter
electrical system of 27V, via the voltage converter or from the
independent power source (IPS). The IPS is built-in to the goggles and
consisting of two batteries of type size AA R6 1.5V or from rechargeable
batteries of the same type.
Note – The IPS (independent power source) is used when the
aircraft electrical power is lost or the helicopter power supply has failed.
1.6 The NVS 6 shall be used under the following conditions:
– When the natural night illumination intensity is within 5·10
-3
to 1 lx
and the meteorological visibility is 1 to 10 km
– At a flight altitude of 20 to 200 m;
– At a flight speed of up to 120 km/h.