🚀 go-pugleaf

In article <1993Jan3.182812.13825@elroy.jpl.nasa.gov>, pjs@euclid.jpl.nasa.gov writes...
>In article <1993Jan2.234235.16100@ee.ubc.ca>, davem@ee.ubc.ca (Dave Michelson) writes:
>> In article <2JAN199323293310@kelvin.jpl.nasa.gov> baalke@kelvin.jpl.nasa.gov (Ron Baalke) writes:
>> >The hammering sessions will continue all the way through the entire month
>> >of January, if necessary.  Even though the first hammering attempt didn't
>> >open up the antenna all the way, it did have a postive effect.  
>> 
>> !!  It did?  I sure don't remember seeing reference to that in the last
>> report but I'm glad to hear it.  
>>  
>> What was the "positive effect"?  How was it determined or measured?
> 
>The GLL nav team chief told me the other day that although nothing
>had unfurled, the degree of bowing had increased.  This was determined
>from sun sensor data.  On the premise that any movement is better than 
>none, this is a positive effect.  They're quite prepared to break the 
>HGA if necessary, assuming they can.

The sun sensor data has indicated that the hammering has affected the
antenna in some way.  Either the tension on the antenna has been increased
or a rib has sprung loose, it cannot be determined which way at this point.
Some clarification on "breaking the HGA".  The two motors may apply enough
force to be able to break the stuck ribs, but having an open High Gain
antenna with a couple of broken ribs is a much better situation than having  
to use the Low Gain antenna by itself.
     ___    _____     ___
    /_ /|  /____/ \  /_ /|     Ron Baalke         | baalke@kelvin.jpl.nasa.gov
    | | | |  __ \ /| | | |     Jet Propulsion Lab |
 ___| | | | |__) |/  | | |__   M/S 525-3684 Telos | Choose a job you love, and
/___| | | |  ___/    | |/__ /| Pasadena, CA 91109 | you'll never have to work
|_____|/  |_|/       |_____|/                     | a day in your life.