APM-90M is a Soviet airport navigation searchlight with a mirror diameter of 90 cm. It was constructed in the 1950s. It was used as an element of the take-off area lighting system at permanent airports, alternate airports and “dols” (road airport sections). It was available in two versions, as a fixed or mobile headlight, mounted on various trucks. The most common ones were: ZiS-150, ZiŁ-164, ZiŁ-131, STAR-66 or STAR-29, but in Poland the standard carrier was ZiŁ-130.
The APM-90M was intended to illuminate the runway, optically guide aircraft to the airport area and mark a point in the field at night or in bad weather conditions.
The headlight had an arc-incandescent lamp. The most frequently used was the arc one with burning electrodes (burning time of a set of electrodes – 1 hour and 15 minutes), less often the incandescent PŻ-19 (it could only work in a vertical position, operating time – 100 hours).
Technical data:
Service: 2 people
Mirror diameter: 90 cm
Power supply from your own PR-125 generator or external network
Light intensity: 135 million candelas (maximum)
Horizontal rotation angle: 360 degrees
Vertical tilt angle: up to 85 degrees.
Visibility of light flux from a height of 1000-4000 m: min. 25 km
Visibility of flashes when the reflector is rotated: up to 75 km at an altitude of 1000 m, up to 125 km at an altitude of 4000 m
