h a l f b a k e r yRecalculations place it at 0.4999.
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Major airports have flarepaths - lighting systems embedded in the
runway, which allow operation in night or poor weather.
They can't be installed in grass strips, and they require constant
maintenance.
The proposal is for a tall folding tower mounted on a large generator
truck. From the
top of the tower, scanning beams of visible laser
light
in different colours trace out the flarepath on ther ground..
As the beams are pointing down, and scanning very fast, even with
high laser powers there's little risk of eye exposure.
It's basically a giant version of a laser scanning keyboard.
Useful in emergencies and to give grass strips 24/7 and poor
weather
capabilities.
http://www.greatlan...ay-edge-marking.jpg
[2 fries shy of a happy meal, Jun 05 2014]
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Because I'm wearing my tin foil hat, I had to bun this. |
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Tis a good idea.
Tis also baked sir. [link]ed image. |
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Yes, seen those, but it's just drawing a single continuous line. |
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This draws a complete flarepath - threshold, centreline, edges and a
rabbit. |
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Right. {ahem} As you were then. |
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No, it's a small furry burrowing rodent that lives on airfields. What part
of this
don't you understand ? |
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One of my neighbors owns a lighting business for events, and a host of cool gear - he'd be happy to be on call for emergency landings in weather, and during the off hours he could host raves on the runway. |
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What happens when the plane lands and rolls through
the path of the lasers? Would lasers reflecting off of
the ground really have the same intensity as
individual lights? |
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// What happens when the plane lands and rolls through the path of
the lasers? // |
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The bit of ground covered by the plane goes dark. This is called a
"shadow". However, it's more normal for pilots to look forwards at
where the plane is headed. It's something flying instructors put quite a
bit if emphasis on, and is considered something of a prerequisite for a
non-instrument approach and landing. |
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// Would lasers reflecting off of the ground really have the same
intensity as individual lights? // |
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No, they woudn't, but they would certainly be distinct and visible in
VFR conditions at night. |
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