Lamps near the lighting system that directly assist in the approach and landing of the aircraft. Approach lighting system is divided into simple approach light system, class Ⅰ, Ⅱ and Ⅱ precision approach lighting system.
Among them, the simple approach lighting system for non-instrumented runway and non-precision approach runway. If the runway is near-visibility or if there are other visual aids provided with sufficient guidance, it may be dismay. The other three types of precision approach lighting systems are used for relatively precise approach runways, and the approach lighting system also provides visual guidance if visibility is not good during the day.
The design we are using is Class III led airport lighting system Class III precision approach lighting system consists of a midline light, horizontal row of lights and side lights, these three kinds of lights are row lights. The center line lights must consist of a line extending along the runway midline and as far as 900 m from the runway entrance. The centerline lamps must have a longitudinal spacing of 30m and the innermost lamps should be located 30m from the entrance to the runway.
In addition, the system must also have two rows of sidelights extending to 270m from the entrance to the runway and two rows of horizontal lights, one row at 150m from the entrance and the other row at 300m from the entrance. Class III precision approach lighting system near the first runway entrance 300m part of the center line light must be made of variable white light short bar lights.
When the runway entrance 300m or more within the shift, this part of the center line lamp can be made by the variable white light single composition. The length of the bar must be at least 4 m. When the bar is composed of approximately a point airport lighting, the luminaires must be evenly spaced by a distance of not more than 1.5 m.