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Old 13th May 2011, 07:31
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What's it for?

Desert Triangle

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Old 13th May 2011, 07:35
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Possibly with the demise of the Railways Air Forces require other means of finding their way about the place.
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Old 13th May 2011, 07:36
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I can see the conspiracy theorists coming out of the woodwork shortly!
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Old 13th May 2011, 08:04
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Auxiliary airfield. The West was lousy with them in the 30s and 40s. We have a couple in Florida near where I live as well... still in use. 3 runways in a triangle is an efficient layout for avoiding crosswind takeoffs and landings and not needing purpose-built taxiways.


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Old 13th May 2011, 13:09
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I always thought that they were for aviation navigation and pointed the way to go.
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Old 13th May 2011, 15:01
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No. We use railroad tracks for that. And migrating geese.
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Old 13th May 2011, 15:20
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lomapaseo`s got it, if you look on a map- any map there`s allways some sort of north marker so there you have it!

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Old 13th May 2011, 15:25
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And on the subject of navigation, last night's "Coast" programme carried a piece as to why, on the west coast of Eire, there are large numbers and a sign saying, strangely, Eire, in stone on cliffs various along the coast line.

Apparently, they were to help the cousins after crossing the pond identify where they were.

One could be cutting and say one could think of several instances in more modern times where such information would have proved useful for the aforementioned aviators...but one won't.....
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Old 13th May 2011, 17:29
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IFR - officially Instrument Flight Rules but often referred to as I Follow Roads, Railways or Rivers.
Use one of the available map sites to have a look at current and former RAF airfield layouts such as Halfpenny Green, Poulton, Syerston, Henlow, Gloucester, White Waltham etc all of which have a triangular layout of their runways.
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Old 13th May 2011, 17:51
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When they started mail flights in the States there were no radio nav aids and even light beacons came later. Maybe these date back to those days in areas where there were no roads or railways to follow?

Krystal when I was at Shanwick for a short period in the early 1970s there was a book called The gross navigational Log. It was not unknown for someone expecting to make landfall at STN arrive at LND. Many interesting explanations to be found therein.
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Old 13th May 2011, 18:15
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It's a Masonic sign.
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Old 13th May 2011, 19:46
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Check this out from the 1940's Army Flight Safety Manual...

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