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Old 09-04-2009, 05:18 PM   #11 (permalink)
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Bicycle Bob -

Quote:
Originally Posted by Bicycle Bob View Post
Could we please stop using "laminar flow" where we mean "attached flow" and "kammback" for "roof extension?" We only make things difficult for newcomers, especially those with a little knowledge, if we develop a new jargon here.

...
Mea culpa, but "roof extension", while literally descriptive, doesn't have any meaning to me.

For instance, does this qualify as a Kammback? :

http://ecomodder.com/forum/showthrea...evia-9437.html


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Old 09-04-2009, 05:44 PM   #12 (permalink)
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Quote:
Originally Posted by Bicycle Bob View Post
Could we please stop using "laminar flow" where we mean "attached flow" and "kammback" for "roof extension?" We only make things difficult for newcomers, especially those with a little knowledge, if we develop a new jargon here.

Very well. I fixed my postings to read "attached". Although, I disagree on kammback. I think a newbie should know what that is within a day or two of being on this forum.
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Old 09-15-2009, 06:48 PM   #13 (permalink)
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deformation

I'll weigh in with protege and Bob.It's and aeroelasticity issue which can be solved with stiffening.The upper panel cannot resist the pressure differential between the base pressure of the wake below the panel and that of the speeding air above.-------- My first foray into aeroshells met not just with bending,but "explosion",as my "light" construction was quite literally blown away by such Delta-Ps.
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Old 09-17-2009, 03:21 AM   #14 (permalink)
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In order to become airborne, you need to have greater lift than the weight of your vehicle which would require very high speed AND some angle of attack (and wings). F1 cars sometimes lift off (or used to) but they are light, have wings and go 200+ MPH. Just keep your speed below 150 mph, your groceries in the passenger seat and you will be fine.

I get the same lift on the rear panel on my Kam... err.. roof-and-sides-extensions but my tuft testing showed attached flow.

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