Article View: sci.space
Article #6700Galileo antenna questions
From: Richard Schroeppel
Date: Thu, 31 Dec 1992 19:11
Date: Thu, 31 Dec 1992 19:11
19 lines
1475 bytes
1475 bytes
Ron Baalke has passed on the report that the Galileo antenna didn't open in response to repeated hammering on the deployment mechanism. My first question: Is the hammering at a constant frequency? Why not vary the frequency continuously in a "chirp", hoping to find a resonance that vibrates the whole antenna? If there are any springs in the ribs, there may be a resonance in the 1 second time range. My second question: During the quick-look playback of the first Gaspra pictures, shortly after the encounter, there was a lot of concern for wear on the tape-recorder rewind mechanism. Many rewinds were required to play back a few pictures. Is this still a concern? How will the Ida data playback be managed (at 10 baud), and the images from Jupiter & the moons? What will the data rate be from the vicinity of Jupiter? Rich Schroeppel rcs@cs.arizona.edu
Technical Details
Message-ID:
<C051E7.DxB.1@cs.cmu.edu>Path:
arc1-ca.pugleaf.net!sparky!uunet!usc!zaphod.mps.ohio-state.edu!uwm.edu!ogicse!das-news.harvard.edu!cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!rcs@cs.arizona.eduShow Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!sparky!uunet!usc!zaphod.mps.ohio-state.edu!uwm.edu!ogicse!das-news.harvard.edu!cantaloupe.srv.cs.cmu.edu!crabapple.srv.cs.cmu.edu!rcs@cs.arizona.edu From: rcs@cs.arizona.edu (Richard Schroeppel) Newsgroups: sci.space Subject: Galileo antenna questions Message-ID: <C051E7.DxB.1@cs.cmu.edu> Date: 31 Dec 92 19:11:24 GMT Article-I.D.: cs.C051E7.DxB.1 Sender: news+@cs.cmu.edu Distribution: sci Organization: [via International Space University] Lines: 19 Approved: bboard-news_gateway X-Added: Forwarded by Space Digest Original-Sender: isu@VACATION.VENARI.CS.CMU.EDU