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Old 04-07-2018, 08:17 PM   #1
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Join Date: Nov 2007
Location: Fayetteville, GA, USA
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Default The 747 Rainbow Challenge.

This is a 747 making it's own rainbow arch. It's an amazing photograph where a number of things have to be in the right place at the right time. A rainstorm must have left water vapor (mist) in the atmosphere, the sun, aircraft and camera all have to be in just the right place and just the right moment.

The arch is formed over and behind the wings. The tremendous vacuum produced by the wings creates a drop in air pressure and temperature that literally rips water (condensation) out of the air. The sunlight then refracts of the water droplets to form a rainbow.

Note the contrails forming off the winglets and the heat waves behind the engines. Amazing.

I did some research. I might be wrong but I believe the 747 is the only aircraft capable of doing this. I haven't found the effect in any pictures of other aircraft.

So here is the ORR.net 747 Rainbow Challenge... I think this is the only aircraft capable (or at least, documented) of making it's own rainbow arch. The challenge is to prove me wrong, find another aircraft doing the same thing. No need for a 24 hour rule. Jump on it!

No, it's not my image. Found it on the 'net. But that is a really interesting image, a KLM climbing out of Heathrow.
Attached Images
File Type: jpg 747 rainbow.jpg (24.2 KB, 11 views)
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