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Falcon at T-9



 
 
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  #22  
Old May 26th 12, 10:26 PM posted to sci.space.policy,sci.space.station
Dr J R Stockton[_162_]
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Posts: 9
Default Liftoff! Falcon at T-9

In sci.space.policy message -
september.org, Fri, 25 May 2012 08:58:01, Jeff Findley
posted:

In article , says...

Jeff Findley writes:

The live audio says that the LIDAR picked up a "stray" return from a
reflector on the JEM module. The reflector in question is not one which
Dragon is supposed to be "looking at".

Sounds like a classic "integration problem" which cropped up
unexpectedly.


Someone should go out and put some black tape over the bloody thing ;-)


That would be a good hardware solution, but a software solution should
be faster to implement. ;-)


The next Dragon should have a paint-gun g.

More seriously, rather than relying on reflectors, include modulated
light sources on the target - essentially laser pointers, modulated to
be unmistakable, with beam-spreaders, and the reflectors around them.
Or even give the sources IFF circuitry - Dragon pulsed "Numbers?" and
they reply "One", "Two", etc., as the case may be.


--
(c) John Stockton, nr London, UK. Turnpike v6.05.
Website http://www.merlyn.demon.co.uk/ - w. FAQish topics, links, acronyms
PAS EXE etc. : http://www.merlyn.demon.co.uk/programs/ - see in 00index.htm
Dates - miscdate.htm estrdate.htm js-dates.htm pas-time.htm critdate.htm etc.
  #23  
Old May 28th 12, 01:05 PM posted to sci.space.policy,sci.space.station
Alan Erskine[_3_]
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Posts: 1,026
Default Liftoff! Falcon at T-9

On 25/05/2012 1:10 AM, Snidely wrote:
Snidely was thinking very hard :
Snidely explained on 5/22/2012 :
Auto launch sequencer running at T-10.

Dragon on internal power at T-8.


Nominal through 50 kilometers ... approaching MECO1.

MECO2

Separation and 2nd stage ignition.


Saw this shot on a newspaper front page at a news stand.
http://www.sfgate.com/cgi-bin/article.cgi?f=/n/a/2012/05/21/national/a084100D72.DTL

http://imgs.sfgate.com/c/pictures/2012/05/22/ba-spacex22_WRE0111180557_part6.jpg

AP's Craig Rubadoux picked a great place to watch the launch.

/dps


All we need now is Buzz Lightyear saying "TO INFINITY AND BEYOND!" ;-)
Great shot.
  #24  
Old May 29th 12, 02:13 PM posted to sci.space.policy,sci.space.station
Jeff Findley[_2_]
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Posts: 1,388
Default Liftoff! Falcon at T-9

In article id,
lid says...

In sci.space.policy message -
september.org, Fri, 25 May 2012 08:58:01, Jeff Findley
posted:

In article ,
says...

Jeff Findley writes:

The live audio says that the LIDAR picked up a "stray" return from a
reflector on the JEM module. The reflector in question is not one which
Dragon is supposed to be "looking at".

Sounds like a classic "integration problem" which cropped up
unexpectedly.

Someone should go out and put some black tape over the bloody thing ;-)


That would be a good hardware solution, but a software solution should
be faster to implement. ;-)


The next Dragon should have a paint-gun g.

More seriously, rather than relying on reflectors, include modulated
light sources on the target - essentially laser pointers, modulated to
be unmistakable, with beam-spreaders, and the reflectors around them.
Or even give the sources IFF circuitry - Dragon pulsed "Numbers?" and
they reply "One", "Two", etc., as the case may be.


The laser range finders worked fine, once they were tweaked a bit to
prevent them from seeing "stray" reflections from the Japanese module.
Tweaking is to be expected on initial test flights. If it weren't, we'd
just skip the test flights and go straight to "operational" status.

Jeff
--
" Ares 1 is a prime example of the fact that NASA just can't get it
up anymore... and when they can, it doesn't stay up long. "
- tinker
 




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