Quote:
Originally Posted by kach22i
Yes and no.
Double the ratio for blisters.
See post #7 by me in link below.
Scaling the Template
https://ecomodder.com/forum/showthre...ate-25975.html
More than one way to use or not use the template was my argument back in 2013. I used many specific examples but did not preface it on tuft attachment although perhaps I should have in retrospect.
Case example was NASA/Dryden truck tail treatment.
Would be interesting to examine if aggressive tail-cone angles of NASA/Dryden truck would have been better off following the template or not.
The Greyhound bus elongation images recently re-posted in one of the bus treads may serve as an example of template-style tail treatments, not sure - will review at a later time. |
My eyes were attracted to 'NASA', so I looked in.
There is a paper, from Norway or Sweden, discussing the interest of the US Air Force in the drag reduction of the steeply upswept tail on the Lockheed C-130 Hercules.
Within the paper, the author makes mention of NASA's truck research. He states that the stinger on the Ford Econoline test mule was attached at the separation line, and that it offered very little additional drag reduction, compared to the truncated tail. It is his belief that NASA would have seen lower drag if the sloping contour they chose, top, sides, and bottom, was less aggressive.
NASA's boat-tail, while maybe not perfect, is similar to what they designed for the Space Shuttle, which during separated free-flight from the mother 747, doubled the glide range of the spacecraft. Not too shabby!
