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*To*: bmansur <bmansur@oc.edu>, David <David@InterWorld.com>, hous0042 <hous0042@maroon.tc.umn.edu>, jim <jim@bogie2.bio.purdue.edu>, KellySt <KellySt@aol.com>, kgstar <kgstar@most.magec.com>, lparker <lparker@destin.gulfnet.com>, rddesign <rddesign@wolfenet.com>, stevev <stevev@efn.org>, "T.L.G.vanderLinden" <T.L.G.vanderLinden@student.utwente.nl>*To*: zkulpa <zkulpa@zmit1.ippt.gov.pl>*Subject*: RE: Sail numbers*From*: Brian Mansur <bmansur@oc.edu>*Date*: Thu, 14 Mar 96 09:48:00 PST*Encoding*: 20 TEXT

>From Brian >Kevin >5) Thermal load is a big problem. 750 KW on .05 Kg is a big worry. >I have not calculated the limiting temperature yet, but I am hopeful that >titanium alloy will stand up to the load. To do this model, I will use >heat capacity and blackbody radiation equation. I do not have time right >now, but expect it soon. >Tim >Hmmm, this sounds troublesome, maybe we need to decrease the density of >the >beam. >If you've calculated it could you add some formulas so that I can check it? Brian If you decrease the density of the beam, you must increase the width of the sail to compensate for lost thrust. Or you can just lower the weight of your ship. None of these options are apealing.

**Follow-Ups**:**RE: Sail numbers***From:*Kevin C Houston <hous0042@maroon.tc.umn.edu>

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