===========================================================
Date: Tue, 16 Apr 1996 22:48:03 +0100
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
From: T.L.G.vanderLinden@student.utwente.nl (Timothy van der Linden)
Subject: Re: problems with beaming

To Lee,

>>The problem is that the feedback may take upto 10 ly (for deceleration),
any prediction would probably be meaningless. 

>Actually, no. The base course of the ship is known and fairly stable, as
for feedback, the reflection off of the sail provides a built-in feedback
mechanism better than anything we could build. 

This assumes the starship can keep exact (within 0.5 km deviation) course
all the time, I'm not convinced about that. If you can make everything work
with such a slow feedback, then I think that you don't even need feedback.


Timothy


===========================================================
Date: Wed, 17 Apr 1996 23:48:18 -0400
From: KellySt@aol.com
To: sl0c8@cc.usu.edu
Cc: T.L.G.vanderLinden@student.utwente.nl, 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: Web docs on
space and starflightI 

X-From: sl0c8@cc.usu.edu (Brandon Neill) 

To: KellySt@aol.com (Kelly Starks)



>On Tue, 16 Apr 1996, Kelly Starks wrote: 

>>Hi,
>>Like your web page, though its a bit under constructed. Yeah, I've been
planning to work more on it, but haven't had time --


>>Thought you might be interested in some stuff I've worked up for a
StarShip design club I'm in. (Yes we're for real, no I'm not talking star
trek!) 

>I briefly checked out the pages, looks cool, is this a local club or can
anyone join? Where do you have the discussions, on the internet or ? I
don't know if you looked at my homepage or just the Space pages, but I'm
an Aerospace Engineering major so I think I might be able to help, or at
least learn. Let me know. 

>Brandon
--------
>neill@foda.math.usu.edu	"I think therefore I am dangerous"
>http://ashton.lib.dixie.edu/~bneill


Hi,
We used to have a weekly newsletter to subscribers, but thats been off
line for a while. At the moment a few of us just cross E-mail one another
with ideas. I CC'ed all of us in this message, so you now have the list. 

Mail load ranges from a couple dozen a day, to a handfull a week (depends
about what we think of). Also there is our old WEB site on the SunSite
server. (I'll forward that address asap.) It holds back copies of the
newsletters and stuff.

We range from ex NASA contractors to students to .. well you can guess.
I'ld forward our last could of messages, but I just flushed. I'll see what I
cal recover from the trash. You can introduce yourself and others can do
the same when they comment.

Welcome to the group. Ask, or attack, anything you like. Hope you like it. 

Kelly Starks

===========================================================



Date: Thu, 18 Apr 1996 09:05:13 -0500
To: sl0c8@cc.usu.edu
From: kgstar@most.fw.hac.com (Kelly Starks x7066 MS 10-39)
Subject: Re: problems with beaming
Cc: 
Bcc: 
X-Attachments: 
>Date: Wed, 17 Apr 1996 08:16:19 -0500
>To:"L. Parker" <lparker@gnt.net>
>From:kgstar@most.fw.hac.com (Kelly Starks x7066 MS 10-39) Subject:Re:
problems with beaming
>Cc:kgstar@most.fw.hac.com (Kelly Starks x7066 MS 10-39) 

>At 8:50 PM 4/16/96, L. Parker wrote:
>>At 04:08 PM 4/16/96 -0500, you wrote:

>>>Feed back to who Lee? Obviously feedback to the transmitters in Sol
are useless given the up to 22 year responce time. So who is using the
feedback?


>>Actually, feedback is probably unnecessary. It occured to me that simple
photovoltaic sensors on the sail extremities can keep it centered on the
beam WITHOUT COMPUTERS. All steering could actually be done from Earth! 

>>Lee

>I don't follow, please explain?

>Earth can't issue steering orders that won't be done for years, and the
ship can't wander around inside the beam every time a sensor finds a dim
spot. I doubt the fall off in the beam would be so even the ship could tel if
the sail was half way out from center or 70% out from center. 

>Kelly


===========================================================
Date: Thu, 18 Apr 1996 09:05:03 -0500
To: sl0c8@cc.usu.edu
From: kgstar@most.fw.hac.com (Kelly Starks x7066 MS 10-39)
Subject: Re: problems with beaming
Cc: 
Bcc: 
X-Attachments: 
>Date: Tue, 16 Apr 1996 16:08:45 -0500
>To:T.L.G.vanderLinden@student.utwente.nl (Timothy van der Linden)
From:kgstar@most.fw.hac.com (Kelly Starks x7066 MS 10-39) Subject:Re:
problems with beaming
>Cc: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 

>At 10:48 PM 4/16/96, Timothy van der Linden wrote: 
>>To Lee,

>>>>The problem is that the feedback may take upto 10 ly (for
deceleration), any prediction would probably be meaningless. 

>>>Actually, no. The base course of the ship is known and fairly stable, as
for feedback, the reflection off of the sail provides a built-in feedback
mechanism better than anything we could build. 

>>This assumes the starship can keep exact (within 0.5 km deviation)
course all the time, I'm not convinced about that. If you can make
everything work with such a slow feedback, then I think that you don't
even need feedback.


>>Timothy

>Feed back to who Lee? Obviously feedback to the transmitters in Sol are
useless given the up to 22 year responce time. So who is using the
feedback? 

>Kelly


===========================================================




===========================================================




===========================================================
Date: Thu, 18 Apr 1996 19:39:11 +0100
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,
sl0c8@cc.usu.edu
From: T.L.G.vanderLinden@student.utwente.nl (Timothy van der Linden)
Subject: Re: Web docs on space and starflightI 

Hello Brandon,

>Welcome to the group. Ask, or attack, anything you like. Hope you like it. 

To what address would you like to have sent the SD-letters? 

sl0c8@cc.usu.edu

or

neill@foda.math.usu.edu


Regards, Timothy


===========================================================
Date: Fri, 19 Apr 1996 10:30:20 -0500
To: KellySt@aol.com
From: kgstar@most.fw.hac.com (Kelly Starks x7066 MS 10-39) Subject: Re:
Web docs on space and starflightI Cc: sl0c8@cc.usu.edu,
T.L.G.vanderLinden@student.utwente.nl, 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 


Our old web site (with back newsletters) is: 

http://sunsite.unc.edu/lunar/

The school of starship design is the part yould be most interested in. 

Kelly


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---- 

Kelly Starks	Internet: kgstar@most.fw.hac.com
Sr. Systems Engineer
Magnavox Electronic Systems Company
(Magnavox URL: http://www.fw.hac.com/external.html) 

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