At 04:32 PM 06/15/2002, Ian Woollard wrote:

>In theory you can make the rocket thinner, but that probably leads to 
>structural
>issues- can a 20cm wide 6m long pole survive takeoff stresses- will it buckle,
>resonate? etc. etc.

That's a 30:1 aspect ratio.  That's marginal - bending moments do bad 
things when you're that skinny.

>Still, IRC losing your engines on a 767 jet aircraft just after takeoff- 
>you're screwed. Doesn't matter
>if you can make it back to the airport; the mass is too high to land 
>without dumping the fuel-
>but you don't have time to do that. You're gonna have a bad day one way or 
>another.

All the heavies have dead zones like that, but I don't think they analogy 
holds up well.  With the airplane, it usually isn't engine failure that 
gives you the headache.

>I'd like to think that regulations are ultimately based on commonsense. ;-)

For some value of ultimately, yes...  They tend to be based more on 
precedent.  But precedent is another way of saying, "This worked before."

-R

--
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Randall Clague                                [EMAIL PROTECTED]

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