miércoles, 26 de junio de 2013

Obstruction Lighting And Its Variants

By Kathy Kaufman


Aircraft warning lights are the high intensity lighting devices that are generally attached to tall structures with collision avoidance measures as its general purpose. They come in different types, due to the varying degrees of their uses. A prominent example is the constantly illuminating obstruction lighting. From the view point of pilots, the buildings adorned are immediately made more visible, which is quite important during night time flying. Sufficient brightness is needed in order for these buildings to be visible miles away.

Other than obstruction lights, other types include red strobes, high intensity white strobes and medium intensity white strobes. The obstruction lights are more frequently illuminated in comparison to its counterparts. Meanwhile, the red lamps have shorter lifespans in comparison.

The main difference between high and medium intensity strobes are the structures they are placed on. Medium intensity strobes are usually used on structures ranging from two hundred feet to five hundred feet while high intensity strobes are usually on structures greater than five hundred feet. Any mediums on up more than five hundred be placed on painted structures.

The International Civil Aviation Organization are the ones that creates the standards about the performance and characteristics of these lamps. At anytime at all, these are easily located on just about any tall building. These tall buildings include water tanks on building roofs, broadcast towers, cranes, chimneys among other places. Shorter structures near airports may also need lighting.

Normally, clusters of two or more are placed on specific heights around the structure. A set may be put at the peak and is normally followed downwards by more sets placed equally apart. The Belmont mast found in the United Kingdom is a prominent example of this, with around nine clusters of reds placed along the entirety of the mast.

On airplanes, these lights are also used to warn other planes of their incoming presence. The ones on planes include white or red, wingtip navigation and landing lights. The landing ones are used when the plane begins to descend and is approaching landing and perhaps at other times if it is considered necessary.

There are those that do no utilize standard methods and go for the unorthodox instead. The Deutschlandsender Herzberg makes uses of practically no warning lamps, preferring skybeamers instead. Both the Blosenbergturm and the Stuttgart TV tower makes use of rotating lamps similar to those in lighthouses instead.

If improperly utilized, there can be certain negative environmental impact to these uses as well. If placed on ground based towers, light pollution is contributed. Another environmental issue here is the towerkill of birds. Careful utilization must be practiced in order to keep the environment safe.

Basically, this overview describes at length the features and types of obstruction lighting used all over the world. To summarize, the types utilized tend to vary between their uses and where they are placed. Towers, tall buildings and even planes can make use of them for various safety reasons.




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