Aviation Obstruction Light (Aviation Obstruction Light), also known as navigation aid light equipment, is a unique lamp for identifying obstacles. It belongs to the navigation aid equipment industry. Aviation Obstruction Light is the range of lights under its seat. To distinguish it from general-purpose lighting, aviation obstruction lights are not always on but flashing. Low-light aviation obstruction lights are still on. Medium-light aviation obstruction lights and high-light aviation obstruction lights are flashing. Below 20 times per minute, not higher than 60 times per minute. The function of the aviation obstruction light is to show the outline of the structure so that the aircraft operator can judge the height and shape of the obstruction and play a warning role. According to the “Special Equipment Safety Law of the People’s Republic of China” and the latest document requirements of the Civil Aviation Administration of China, aviation obstruction lights as special equipment must have a qualified test report issued by a test center designated by the Airport Division of the Civil Aviation Administration of China.
Classification and naming of aviation obstruction lights
Aviation obstruction lights
3 Classification and naming
The classification of aviation obstruction lights is as follows:
A) L-810, low-intensity red obstruction light
B) L-856, high-intensity white flash obstruction light, 40 flashes / min
C) L-857, high-intensity white flash obstruction light, 60 flashes / min
D) L-864, medium-intensity red flash obstruction light, 20 flashes / minute—40 flashes / minute
E) L-865, medium-intensity white flash obstruction light, 40 flash / min
F) L-866, medium-intensity white flash obstruction light, 60 flashes / min
G) L-885, medium-intensity red flashing obstruction light, 60 flashes / minute
Aviation obstruction lights are generally divided into three types: low light intensity, medium light intensity, and high light intensity. The vertical and horizontal distances of aviation obstruction lights are higher than 45 meters for buildings and their facilities. Three types of obstacle marker lights can be used in conjunction with each other. Aviation Obstruction Light Classification
It is 45 meters below the ground, and low-intensity aviation obstruction lights should be set in the surrounding open areas.
Buildings and their facilities 45 meters above 105 meters above the ground: Medium-intensity B aviation obstruction lights are red flashes, the flash frequency should be between 20-60 times per minute, and the active light intensity is 2000cd ± 25%.
Use medium-intensity A-type aviation obstruction lights above 105 meters and below 150 meters above the ground; a white flash, sufficient light intensity (2000-20000cd) ± 25%.
Buildings and their facilities above 150 meters above the ground must use high-intensity obstruction signs and must be white flashes. The flash frequency should be between 20-70 times per minute. The sufficient light intensity depends on the background brightness and works 24 hours a day.
Obstacles should be marked with the highest point and the outermost edge of the barrier (ie, the height and width of the constraint). Obstacles should be set. The distance between the middle layers must be no more than 45 meters. In particular, buildings should consider the addition of aviation obstruction lights on the middle floor.
The vertical and horizontal distance of aviation obstruction lights should not be higher than 45 meters (that is, if the top of an object is more than 45 meters above its ground, the sign lamp must be obstructed in the middle)
For chimneys or other buildings of similar nature, the top obstruction marker lights should be located between 1.5-3 meters at the top, taking into account the pollution of the lamps by the chimneys.
Obstruction signs can be placed 4-6 meters below the chimney opening.
Ultra-high objects above 150 meters should be used in conjunction with medium and high light aviation obstruction lights.
For high-voltage transmission cables less than 150 meters high, the tower can be equipped with medium-light aviation obstruction lights that emit white light on top.
No matter what kind of aviation obstruction light, the number, and arrangement of aviation obstruction lights at different heights should be able to see the object or “group outline” of the object from all aspects, and consider the simultaneous and sequential flashing of obstacle marker lights to achieve Obvious warning effect.