Return-path: X-Andrew-Authenticated-as: 7997;andrew.cmu.edu;Ted Anderson Received: from beak.andrew.cmu.edu via trymail for +dist+/afs/andrew.cmu.edu/usr11/tm2b/space/space.dl@andrew.cmu.edu (->+dist+/afs/andrew.cmu.edu/usr11/tm2b/space/space.dl) (->ota+space.digests) ID ; Tue, 24 Apr 90 02:37:18 -0400 (EDT) Message-ID: Reply-To: space+@Andrew.CMU.EDU From: space-request+@Andrew.CMU.EDU To: space+@Andrew.CMU.EDU Date: Tue, 24 Apr 90 02:36:49 -0400 (EDT) Subject: SPACE Digest V11 #311 SPACE Digest Volume 11 : Issue 311 Today's Topics: Re: Apollo 13, STS-1, Vostok 1 anniversaries Re: NASA to brief media on Hubble Space Telescope instrument test Re: Is the moon upsidedown to NASA? Duct Tape vs Gaffer's Tape (sp?) Re: Drake Equation (was Re: Interstellar travel) Not duct tape, gaffer's tape Re: Decompression and 2001 Re: Decompression and 2001 ---------------------------------------------------------------------- Date: 23 Apr 90 19:09:00 GMT From: ccncsu!ncr-fc!mikemc@boulder.colorado.edu (Mike McManus) Subject: Re: Apollo 13, STS-1, Vostok 1 anniversaries >In article shafer@skipper.dfrf.nasa.gov (Mary Shafer) writes: > In article <89@newave.UUCP> john@newave.UUCP (John A. Weeks III) writes: > > >Duct Tape? Why on earth did they have duct tape on the Apollo? > >How much did this flight certified duct tape cost? Did any of the > >LM's that landed on the moon carry duct tape? > > I believe that Mach 3 tape (i.e. flight-certified duct tape) costs > about $16 a roll, but I get it from the tool crib and am not certain > of the precise cost. I'm sure we get a big quantity discount. > > I would expect space-flight-certified tape to cost about twice that, > or $32 a roll. As a big user of "Home-certified, Heavy-duty, Fix-anything, McGyver-style Ductape [tm]", I would certainly want some of the stuff in *MY* space-bound tool box! And heck, $32 bucks a roll sounds like a bargain. Where can I get some of the stuff (would probably do a great job on my muffler ;-)? -- Disclaimer: All spelling and/or grammer in this document are guaranteed to be correct; any exseptions is the is wurk uv intter-net deemuns. Mike McManus (mikemc@ncr-fc.FtCollins.ncr.com) NCR Microelectronics 2001 Danfield Ct. ncr-fc!mikemc@ncr-sd.sandiego.ncr.com, or Ft. Collins, Colorado ncr-fc!mikemc@ccncsu.colostate.edu, or (303) 223-5100 Ext. 360 uunet!ncrlnk!ncr-sd!ncr-fc!garage!mikemc ------------------------------ Date: 24 Apr 90 03:35:39 GMT From: swrinde!cs.utexas.edu!news-server.csri.toronto.edu!utgpu!utzoo!henry@ucsd.edu (Henry Spencer) Subject: Re: NASA to brief media on Hubble Space Telescope instrument test In article <12761@motpe.phx.mcd.mot.com> mikec@phx.mcd.mot.com (Michael Collins) writes: > To head off the inevitable questions, according to the 1987 Observer's >Handbook of the RASC (most recent edition at my desk), NGC 3532 is an open >cluster at RA 11h 05.5m, Dec -58d 33m (1980)... ...and to head off some more, it's in the constellation Carina, and there is no intrinsic interest in it -- that's just the direction HST will happen to be pointed at the time. The image is not expected to reveal anything, except perhaps that more work is needed on focusing. :-) If you really want to see fancy pictures, you should cultivate patience. Engineering tests, alignment work, and precise focusing are expected to take *three months*. After that there will be five more months of fiddling with details, measurement of distortion and internal scattering, tracking tests, fine-tuning of the instruments (as opposed to the main optics), etc. There will be some science done during this latter period, though. And oh yes, while I'm being the party-pooper :-), note that the claims about planetary images comparable to those from Voyager are overblown. There will be images of Jupiter comparable to those Voyager got about five days before encounter. Note, "Jupiter", "five days before encounter", not, say, the moons of Uranus *at* encounter. -- If OSI is the answer, what on | Henry Spencer at U of Toronto Zoology Earth could be the question?? | uunet!attcan!utzoo!henry henry@zoo.toronto.edu ------------------------------ Date: 23 Apr 90 21:04:30 GMT From: usc!zaphod.mps.ohio-state.edu!uakari.primate.wisc.edu!uflorida!mephisto!prism!fsu!gw.scri.fsu.edu!pepke@ucsd.edu (Eric Pepke) Subject: Re: Is the moon upsidedown to NASA? Reason would dictate that the orientation of the moon depends on which direction your head is facing when lying down looking up at it. Alas, this is not so. In America the moon looks exactly like Jackie Gleason. In China, I understand, it looks exactly like Mao Tse-Tung, but before 1945 it used to look like Buddha's stomach. Eric Pepke INTERNET: pepke@gw.scri.fsu.edu Supercomputer Computations Research Institute MFENET: pepke@fsu Florida State University SPAN: scri::pepke Tallahassee, FL 32306-4052 BITNET: pepke@fsu Disclaimer: If you need a :-), it ain't worth it. ------------------------------ Date: 23 Apr 90 23:37:40 GMT From: elroy.jpl.nasa.gov!usc!zaphod.mps.ohio-state.edu!mips!prls!pyramid!infmx!billd@ames.arc.nasa.gov (William Daul) Subject: Duct Tape vs Gaffer's Tape (sp?) One incidental fact...Gaffer's tape is $50.00 a role!!! ------------------------------ Date: 23 Apr 90 12:58:36 GMT From: rochester!dietz@rutgers.edu (Paul Dietz) Subject: Re: Drake Equation (was Re: Interstellar travel) In article <1990Apr23.021325.9068@calvin.spp.cornell.edu> johns@calvin.spp.cornell.edu.UUCP (John Sahr) writes: >In article <1990Apr22.154923.24834@cs.rochester.edu> dietz@cs.rochester.edu (Paul Dietz) writes: >>The plasma frequency of a plasma with electron density N (in units of >>eletrons per cubic meter) is 56.35 N^{1/2} Hz. > >The formula above yields the radian-frequency. The plasma frequency >in Hz is > > 9 sqrt(N) Hz Ack; quite right. However, my point stands: the plasma frequency in space is somewhere in the kilohertz, so 60 Hz radiation doesn't propagate. Paul F. Dietz dietz@cs.rochester.edu ------------------------------ Date: 23 Apr 90 15:14:17 GMT From: skipper!shafer@ames.arc.nasa.gov (Mary Shafer) Subject: Not duct tape, gaffer's tape It's my duty to point out that they don't use "duct tape" in space, they use "gaffer's tape". The difference, I'm informed, is that the gaffer's tape leaves no residue when removed. Gaffers are people who do lighting for movies. They have to stick lights up on sets and need a sticky but clean-removing tape. Amazing the trivia that one can learn from an ex-astronaut in a chatty mood! -- Mary Shafer shafer@skipper.dfrf.nasa.gov ames!skipper.dfrf.nasa.gov!shafer NASA Ames Dryden Flight Research Facility, Edwards, CA Of course I don't speak for NASA ------------------------------ Date: 23 Apr 90 18:22:20 GMT From: hplabsb!dsmith@hplabs.hp.com (David Smith) Subject: Re: Decompression and 2001 In article <9004212012.AA07801@cs.nps.navy.mil> shimeall@CS.NPS.NAVY.MIL (Tim Shimeall) writes: >The interval between when Dave blew the pods hatch and when he pulled the >switch was VERY short. He blew into the lock, bounced off the back wall, >and pulled the swich. It was closer to 3 seconds than 8. Then somebody must have edited it for television. It has been a long time since I watched it, but I counted out the time during at least two viewings. I believe it was about twelve seconds. -- David R. Smith, HP Labs | "It is said that St. Patrick drove the dsmith@hplabs.hp.com | snakes out of Ireland. They were last seen (415) 857-7898 | selling junk bonds." -- Johnny Carson ------------------------------ Date: 23 Apr 90 20:45:59 GMT From: sdd.hp.com!zaphod.mps.ohio-state.edu!uakari.primate.wisc.edu!uflorida!stat!fsu!gw.scri.fsu.edu!pepke@ucsd.edu (Eric Pepke) Subject: Re: Decompression and 2001 In article <1990Apr21.041344.16322@utzoo.uucp> henry@utzoo.uucp (Henry Spencer) writes: > Sure about that? Timed it? (It's been too long since I've seen the movie > for me to be sure, but 8 seconds is actually quite a long time.) I think it was around 8 seconds. When I play it back in my head it seems it was about 9 seconds until he pulled the lever and another 4 or so before the door closed and the air started to rush in. (This has gotten so far away from anything real, but) what bothered me is why the door didn't bounce back and knock him out cold (or just plain out). Eric Pepke INTERNET: pepke@gw.scri.fsu.edu Supercomputer Computations Research Institute MFENET: pepke@fsu Florida State University SPAN: scri::pepke Tallahassee, FL 32306-4052 BITNET: pepke@fsu Disclaimer: My employers seldom even LISTEN to my opinions. Meta-disclaimer: Any society that needs disclaimers has too many lawyers. ------------------------------ End of SPACE Digest V11 #311 *******************