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*To*: KellySt@aol.com, kgstar@most.fw.hac.com, stevev@efn.org, jim@bogie2.bio.purdue.edu, zkulpa@zmit1.ippt.gov.pl, hous0042@maroon.tc.umn.edu, rddesign@wolfenet.com, David@InterWorld.com, lparker@destin.gulfnet.com, DotarSojat@aol.com*Subject*: Re: OK, here the right calculus (I hope)*From*: T.L.G.vanderLinden@student.utwente.nl (Timothy van der Linden)*Date*: Wed, 03 Apr 1996 23:26:05 +0100

To Kevin, >So you're saying that a Maser Augmented Rocket System (MARS) _will_ >work? do I have that correct. That we can use maser sail to accelerate >at 1G constant, then convert the Microwave energy to elec. to accelerate >Reaction Mass (RM) to about .803 C and we will need 52 times the ships >dry mass for RM. > >Celebratory cheers pending confirmation. Well, eh, I think so. At least I believe it, although there is something in the back of my head that says that a long time ago someone (was it me, I really don't know?) said that it wasn't possible. So I will check a few things and let you know. >> Note that the power of the maser-beam is NOT constant, it is supposed that >> it decreases while the ship gets lighter (because it repulses mass). > >If it's not too much trouble, can you figure this for a constant maser beam >How much extra RM will we need? Well, that needs a different approach, I'll see what I can do and let you know. If you haven't heard me about it in a week, give me a yell. >A decreasing maser beam is possible, it's only a time delay calculation, >but a constant beam would solve some engineering problems Wow did I just find a minimum, now I'm asked to find a worse minimum because it works too well. Those damn engineers never know what they want... ;) >and which time frame do I use to figure the energy of the Maser beam? >ship's time or earth's time? The formula for the capital T in formula (4) is the time needed to decelerate in the ship's frame. Timothy

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