“One major benefit of white phosphor over green is that it leverages the human visual system’s efficiency in processing black-and- white images,” said K Kirkendall, ASU’s senior NVG instructor pilot. “This is because there are two types of photoreceptors in the eye, namely rods and cones. Rods are most sensitive to light/dark changes and are responsible for night (scotopic) vision. Cones are sensitive to blue, green or red colors, and are primarily used during


the day.” WP NVGs also cause less eye fatigue to users than GP NVGs over time. And the shorter light wavelengths used by WP NVGs result in sharper images.


WP NVGs are just one significant technological advance in today’s LE helicopter cockpit. Others include tactical “moving map” displays that show aircraft location and flight path in real-time, HD electro-optical/infrared (EO/IR) camera


sensors and spotlights that provide video coverage in all light conditions, and broadband data links to rotorcraft that support integration with the department’s computer-aided


dispatch (CAD) communications system.


“The integration of these functions into LE helicopters is definitely improving situational awareness and operations safety,” said Dan Schwarzbach, executive


rotorcraftpro.com


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