Silhouette challenge
Join Date: Oct 2008
Location: Wales, UK
Age: 65
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I have seen this somewhere, but can't think where!!! 
The aircraft behind marked Special is interesting...what looks like a swept parasol wing?
The aircraft behind marked Special is interesting...what looks like a swept parasol wing?
Last edited by skytrain10; 4th Feb 2010 at 09:52.
The beer is American....
The aircraft behind marked Special
It is American. (Nice shot of the Lightning mate. Now there's a special name for that shock wave effect due to water vapour, isn't there?)
Hi Ken. I can't discern if the background plane says "Spirit" or "Special"? No idea what that is.
Here's a photographic clue. The name is also on the side so maybe your high powered magnifier can read it.
Got another clue. Try this...
Two words. First word..a type of wood purportedly used in the world's largest flying-boat (although I have read that this is a myth?). Second word...a type of motor car. An enclosed two-door type with only one or two seats.
Two words. First word..a type of wood purportedly used in the world's largest flying-boat (although I have read that this is a myth?). Second word...a type of motor car. An enclosed two-door type with only one or two seats.
"Now there's a special name for that shock wave effect due to water vapour, isn't there?"
It's the Prandtl-Glauert expansion rule.
Magnifier not work due to lo-res image.
It's the Prandtl-Glauert expansion rule.
Magnifier not work due to lo-res image.
All your mate!
