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Re: Coke-bottle shapes, etc.

To: "Pile,Chris" <zoombot@cox.net>,<land-speed@autox.team.net>
Subject: Re: Coke-bottle shapes, etc.
From: Skip Higginbotham <saltrat@pahrump.com>
Date: Sun, 29 Apr 2007 08:56:04 -0700
This applies to subsonic vehicles without wings how?
Skip




At 09:29 AM 4/29/2007, you wrote:
>     Tom Sarda, John Burk, and List -
>
>     The coke-bottle shape of supersonic aircraft results from a 
> design concept
>referred to as "The Area Rule" which implies that as a certain size frontal
>area approaches Mach 1 the hole it punches gets larger than the actual frontal
>area size. The coke-bottle shape allows the pressure to reduce so that a plane
>with that shape at supersonic speed actually punches a smaller hole through
>the atmosphere than it measures physically.
>     The rule itself determines where the coke-bottle shape is located on the
>fuselage, and how deeply the waist of the coke-bottle is formed.
>
>     If anyone knows different or has more info please let us know - 
> I asked an
>design engineer from the defunct Starship program to give me a quick'n'dirty
>explanation without the numbers and jargon when I was working at
>Raytheon/Beech (now Hawker/Beech).
>
>     Chris Pile aka aircap
>
>http://home.worldonline.co.za/~fanjet/NC-06.jpg        Beech Starship (no
>coke-bottle)
>
>http://z.about.com/d/inventors/1/0/N/4/b_1.jpg           Rockwell-Boeing B1
>Lancer (coke-bottle)




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