Quote:
Originally Posted by euromodder
But its length/diameter ratio is better, which should be lowering drag again.
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It's true that the fineness ratio is increased, which is good, but when Hucho and others speak of only being able to lower a cars drag by further lengthening,I interpret that to mean that as the body is extended,the cross-section continues to reduce in the process.
This would be a good experiment,as I myself have remarked at times that for utility,a body might be stretched in constant section to guarantee some interior headroom which is what airliners do and submarines.
The one bus model goes to Cd 0.13 even with all its length and the Cal Tech GALCIT E-Z HOOK streamliner kinda takes Sam Whittingham's VARNA Diablo and stretches it out beyond 13-feet in length,and still pulls off Cd 0.103.
It would be nice to have $2,500/day to test the theory in Cal Tech's tunnel.