<br><br><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div class="im">On Mon, Nov 07, 2011 at 06:20:54PM -0800, spike wrote:<br>
<br>
>> My own experience with it is that the problem doesn't scale down very<br>
well.<br>
> Every design I have derived has the cost per kg to LEO increasing<br>
> dramatically once the total payload goes much below 1000 kg. I am<br>
> cheering wildly for anyone who can get those costs down.<br></div></blockquote><div><br></div><div>Are you familiar with Jordin Kare's Mockingbird?</div><div><br></div><div><a href="http://www.quantumg.net/mockingbird.pdf">http://www.quantumg.net/mockingbird.pdf</a></div>
<div><br></div><div>-sjv </div></div>