Re: RE: starship-design: Engine Parameters

[KellySt@aol.com]

In a message dated 10/8/98 10:53:44 PM, lparker@cacaphony.net wrote:

>Nels,
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>
>
>> An acceleration of 90 m/ss for your high engine performance is
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>> impractical.  This is for the simple reason that this equals about nine
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>> gee's.  Even if an engine could be made to do this, no human frame can
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>> take that much acceleration for more than a few minutes (here I assume we
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>> continue with the idea of manned missions....
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>
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>MOST of our current chemical rockets can do this, so building an engine or
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>vehicle that can withstand 9 g's isn't impossible, as for special designs,
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>most modern homebuilt kit planes are designed for a maximum loading of 9
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>g's. There isn't anything terribly special about using this as a maximum
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>design load.
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>
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>As for continuous acceleration, for the high end category I think 10 m/sec
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>(1 g) should be the absolute minimum. BTW, before someone jumps my shorthand
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>version, I am purposely not writing the ^2, its a danged nuisance...I assume
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>that is why you wrote the m/ss?
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>
>
>Lee
>


Why would you want to boost more then 1g?  It won't get you there any sooner,
you just spend more time at coast and hurt you and the ship more during boost.

Kelly