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First, why do you need to set up a chimney to install aviation obstruction lights or apply aviation obstacles?
In order to ensure the flight safety of aviation aircraft (mostly aircrafts, helicopters), the necessary aviation obstruction lights and striking aviation obstruction colors must be provided for the presence of chimneys that may affect the safe flight of an aviation vehicle to indicate the overall contour of the chimney ( Eye width and visual height) assist pilots in their flight work.
1. Targeting chimneys built in civil airport clearance protection areas;
2. It is outside the civil airport clearance protection zone, but it is constructed beyond the surrounding surface 150 in the civilian airport approach control zone (centered on the civil airport reference point, most refers to the runway center point, a radius of 50KM circle). Meter (or) above the chimney;
3. Build a chimney in a city with an elevated helicopter apron;
4. Chimneys that have been considered by the aviation sector as having the potential to affect the flight safety of aviation aircraft.
Second, the chimney aviation obstruction lights need to install which obstruction light fixtures?
1. High light intensity aviation obstruction light 1.1 High light intensity type A aviation obstruction light: white flash, flash frequency 40 ~ 60 times / minute. The flash intensity automatically changes the light intensity according to the change of the lighting intensity in the installation environment. The minimum effective flash light intensity at night (<50 cd/) is 2000 cd, and the flash light intensity at dusk and dawn (50 cd/-500 cd/) is 20000 cd. ) The flash intensity is 200000cd;
1.2 The basic parameters of the high-intensity B-type aviation obstruction light are the same as those of the high-intensity A-type aviation obstruction light, except that the intensity of the flash between the turns is not the same as 100000 cd.
2. Medium light aviation obstruction light 2.1 Light intensity type A aviation obstruction is white flash, 20~60 times/minute flash frequency, according to night, dusk and dawn, daytime lighting environment, the flash intensity is 2000cd in sequence. 20000cd, 20000cd;
2.2 Medium-intensity B-type aviation obstruction light is a red flash obstruction light with 20 to 60 flashes per minute and a constant light intensity of 2000 cd.
3. The low light intensity aviation obstruction light is a red constant light obstruction light with a constant light intensity of 10 cd.
Third, how to set up distribution of chimney aviation obstruction light?
1. If the chimney is less than or equal to 45 meters above the surrounding ground surface height, only one medium-strength aviation obstruction light can be set at the top of the chimney;
2. For chimneys that exceed the height of 45 meters or more above the surrounding ground surface, multi-layered obstruction lights should be installed. High-strength aviation obstruction lights and medium-strength aviation obstruction lights should be provided. The vertical distance between each obstruction light should not exceed 45 meters. May be equal;
3. When the height of the chimney exceeds 150, the top layer shall be a high-intensity flash obstruction light with a distance between 75 and 105 meters. High-strength obstruction lights shall be provided with low and medium-strength aviation obstruction lights;
4. The setting of the obstruction light on the top of the chimney shall be set within the range of 1.5 to 3 meters below the top of the chimney, and the height of more than 150 meters shall be set within the range of 7.5 meters below the top of the chimney;
5. The number of obstruction lights per level should be determined based on the outside diameter of the chimney at the elevation of the stack.
5.1 outside diameter is less than or equal to 6 meters, each obstacle lamp need to set 3;
5.2 When the outer diameter is more than 6 meters and not more than 30 meters, 4 obstruction lights shall be set on each floor;
5.3 If the outside diameter exceeds 30 meters, 6 layers shall be set for each layer.
Fourth, the chimney aviation obstruction lamp installation design need to pay attention to what?
1. The setting of the obstruction light shall indicate the maximum and maximum edges of the chimney (ie visible height and visible width);
2. At the same time, the aviation obstruction light that flashes at the same time can adopt the way of GPS or obstacle light controller/box to synchronously flash;
3. When installing aviation obstruction lights, avoid causing light pollution to the surrounding environment. Only visible light can be seen from the ground.
Fifth, how to set aviation obstacle light in chimney aviation obstruction light?
1. The chimney aviation obstacle color should be orange and white or white and red and white band paint color ribbon, the ribbon should be perpendicular to the chimney axis line, the ribbon width is the longest side of the color target, ie the chimney height of 1/ The smallest of 7 or 30 meters, the darker top and bottom of the odd-colored ribbon;
2. The chimney height is less than or equal to 45 meters and the color scale is 7;
3. After the height of the chimney less than 150 meters, after using the high light intensity white obstruction light, you can not set aviation obstacle color. 
Reference download:
1. Annex 14 to the Convention on International Civil Aviation
2. "People's Republic of China Civil Aviation Industry Standard MH6012-2015"
3. "Civil Aircraft Flight Area Technical Standard MH5100-2006"
How to design the chimney aviation obstruction light
How to design and install aviation obstruction lights for low or ultra-high chimneys? - Shenzhen Reebok Technology Editor.