Aucbvax.6099 fa.space utcsrgv!utzoo!decvax!ucbvax!space Sat Feb 6 15:26:55 1982 SPACE Digest V2 #99 >From OTA@S1-A Sat Feb 6 03:07:05 1982 SPACE Digest Volume 2 : Issue 99 Today's Topics: half-time power from the moon NASA budget "horseshoe" orbits LA l-5 convention ---------------------------------------------------------------------- Date: Friday, 5 February 1982 08:44-PST From: KING at KESTREL Subject: half-time power from the moon To: space at mit-mc cc: King at KESTREL Don't lunar power stations cease to function two weeks every month? ------------------------------ Date: 5 Feb 1982 1036-PST From: Paul Dietz Subject: NASA budget To: space at MIT-MC Heaviest cuts were in technology for transport aircraft and advanced propulsion. Does this include scramjets? In my opinion developing the technology for single stage to orbit (SSTO) vehicles is a lot more important than planetary exploration. ------------------------------ Date: 5 Feb 1982 1310-CST From: Jonathan Slocum Subject: "horseshoe" orbits To: space at MIT-MC cc: knutsen at SRI-UNIX I'm sure there will be plenty of other replies on this, but... The word "horseshoe" may be unfortunate. But imagine TWO of them, ends-to-ends, one slightly larger than the other. That's what is meant. The satellites do not reverse their course; they merely exchange orbits. As the lower one catches up with the higher one, their mutual gravitational attraction acts to accelerate the former and retard the latter; the lower one thus moves into a higher orbit, and the higher one, into a lower orbit. They continue on their merry ways until the next encounter/dance. Actually, it surely takes several revolutions til the next meeting, so the horseshoe analogy does not exactly fit. But it's poetic, isn't it? ------------------------------ Date: 6 February 1982 04:05-EST From: Jerry E. Pournelle Subject: LA l-5 convention To: Wedekind.ES at PARC-MAXC cc: POURNE at MIT-MC, WEDEKIND.ES at MIT-MC, REM at MIT-MC, RMS at MIT-MC, PDL at MIT-MC, SPACE at MIT-MC, SF-LOVERS at MIT-MC The L-5 Convention is at the Hyatt International (LA AIRPORT HYATT) over the weekend of 2-4 April. Usual convention costs (around $30 at the door; "professional membership" including banquet, some papers, and a reception is about $75). Guests of Honor: Robert A. Heinlein Fred Haise (Grumman VP, Commander of Apollo 13) Keynote Speaker: Dr. Hans Mark, Deputy Adminnistratior NASA, former Secretary of the Air Force. Featured Guest: Honorable Newt Gingrich, Representative from Georgia, CoChair of the Congressonal Space Caucus. Arthur Kantrowitz, Gary Hudson (private rocket constructor) Harry Stine, George Merrick and Chuck Gould of Rockwell, General Dan Graham, and a buncha other notables. Convention cochaired by Je Pournelle and Milton Stevens (Stevens, a former Worldcon SF type, does most of the work). Purpose is to get enthusiasts and professionals together, adn to generate a strategy for the advancement of the space program. Please feel free to pass this messag on to whomever you like. ------------------------------ End of SPACE Digest ******************* ----------------------------------------------------------------- gopher://quux.org/ conversion by John Goerzen of http://communication.ucsd.edu/A-News/ This Usenet Oldnews Archive article may be copied and distributed freely, provided: 1. There is no money collected for the text(s) of the articles. 2. The following notice remains appended to each copy: The Usenet Oldnews Archive: Compilation Copyright (C) 1981, 1996 Bruce Jones, Henry Spencer, David Wiseman.