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mardi 17 janvier 2017

Information On Aircraft Warning Lights On Buildings

By Sarah Smith


Aircraft warning lights refer to high-intensity lighting devices that are attached on structures such as buildings in order to avoid collision. These devices serve as a measure for avoiding collision. The intention of using these devices is to make buildings more visible to aircraft passing by. In most cases, they are used at night even though they can be used during daytime too. Aircraft warning lights on buildings must be visible from several miles away for them to be effective.

Generally, only two types of these lights exist, that is, white flashers and red lamps. Red lamps are programmed to remain on throughout or to go on and off at a certain rate. The rate is usually low and does not change even though it can be changed. White flashers are normally xenon discharge flashers. Red lamps are gaining more popularity in some countries such as the UK over white flashers.

Red lamps are installed with incandescent filament bulbs in them. Their design is ruggedized so as to improve their lifespan because they tend to have a very short lifespan. They are also powered using power that is below their usual operating power to increase lifespan. High-power red LEDs have started to replace incandescent bulbs in the recent past.

The lifespan of LED-based lamps is much longer. The long lifespan raises reliability while reducing maintenance costs. Xenon flashers are actively being replaced by some manufacturers who are introducing medium-intensity strobes that are based on LED technology. As such, the desirability of white flashers in the US is still high. Most structures have white flashers during daytime and red lamps during nighttime.

Red lamps tend to be in common use in urban and populated areas. This is because pilots can spot them more easily from great heights. Even though not as common as red lamps, white flashers are also used in urban areas. White flashers are not preferred to use in urban areas because they match with background lights so that they cannot be spotted easily. In rural areas where background lights is not a problem, they are in common use.

These warning lights can be placed on any tall structure in general. Some of the structures they are commonly attached to include water tanks, electricity pylons, broadcast towers and masts, tall buildings, wind turbines, chimneys, and cranes. If the structure is shorter, but located near an airport or airstrip, these lamps may still be attached to them to serve as warning to aircraft that is trying to land on the field.

Normally, the lights are arranged in clusters of two or several lamps around the structure. The arrangement is done at specified heights along the height. In most cases, a set will be placed at the top of the structure followed by several sets at specific intervals down the structure. How many sets are installed will be determined by the height of the structure.

Light trespassing is one of the major issues related to these lamps. People who stay close to them complain of trespass by the light. Towerkill of birds and light pollution are also secondary issues of concern.




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