Re: Possible Falcon 9 explosion

From: kd6nrp@earthlink.net
Date: Tue Oct 01 2013 - 02:13:10 UTC

  • Next message: Greg Roberts: "Re : Falcon 9 event"

    The Falcon 9 pre-launch manifest that I researched several weeks ago had two CUsat payloads: CUsat 1 and CUsat 2.
    
    Did one CUsat not deploy?
    
    Regards,
    
    Brian Webb
    
    -----Original Message-----
    >From: Jonathan McDowell <planet4589@gmail.com>
    >Sent: Sep 30, 2013 6:07 PM
    >To: DAVID DICKINSON <ghedi_dave@yahoo.com>
    >Cc: Greg Roberts <grr@telkomsa.net>, "seesat-l@satobs.org" <seesat-l@satobs.org>
    >Subject: Re: Possible Falcon 9 explosion
    >
    >The clamshell fairings are suborbital and there is only one CUSAT
    >object. I have  Falcon 9 St 2, Cassiope, 5 small sats  (DANDE, CUSAT,
    >POPACS 1-3), 4 POPACS spacers, for total of 11
    >
    >
    >On 30 September 2013 21:01, DAVID DICKINSON <ghedi_dave@yahoo.com> wrote:
    >> Hi Gang,
    >>    We count 1x Falcon S2 booster, CASSIOPE, 2x clamshell fairings, 6x
    >> smaller sats, and 4 spacers in the POPACS payload for a grand total of 14
    >> objects, 6 short of the 20 being tracked. Did we miss anything?
    >>
    >> Thanks,
    >>
    >> Dave Dickinson
    >> Blog: www.astroguyz.com
    >> Twitter: http://twitter.com/Astroguyz
    >> Youtube: http://www.youtube.com/astroguyz
    >>
    >> ________________________________
    >> From: Jonathan McDowell <planet4589@gmail.com>
    >> To: Greg Roberts <grr@telkomsa.net>
    >> Cc: seesat-l@satobs.org
    >> Sent: Monday, September 30, 2013 7:03 PM
    >> Subject: Re: Possible Falcon 9 explosion
    >>
    >> Greg - My understanding is that SpX don't think they had an explosion.
    >> That doesn't mean they didn't get some small pieces
    >> flying off the vehicle. I agree we'll have to wait for more data and
    >> see what comes to light.
    >>
    >> My rough calculation is that the excess objects may have separated
    >> around 1640 UTC, while the venting that you saw
    >> (which I suspect was not a second burn, but a post abort propellant
    >> dump) was around 1700 UTC I believe?
    >>
    >>
    >>
    >> On 30 September 2013 18:23, Greg Roberts <grr@telkomsa.net> wrote:
    >>> Hi Jonathan ( and other readers)
    >>>
    >>> Evening - actually my morning now as past local midnight.  Ive just been
    >>> discussing on the  South African FACEBOOK pages (prior to just having now
    >>> read the SeeSat items about a possible 2nd stage exolosion) that have
    >>> covered the event - my page and that of the RSG group - about what appears
    >>> to be multiple objects in severalof the numerous photographs taken here in
    >>> South Africa of the event. In view of the comment by Elon Musk that an
    >>> attempt was made to restart the second stage engine  but the burn was
    >>> aborted "due to an anomaly"  the question now arises was the "anomaly" an
    >>> actual explosion of the second stage engine/rocket ?  This might also
    >>> explain the 20 odd pieces so far confirmed by SPACETRACK.  Having not seen
    >>> the event myself I have to rely on other peoples images/reports. The
    >>> satellite/satellites went into earths shadow soon after the "halo" so not
    >>> enough time to get any seperation. But it was only in shadow for a
    >>> relatively short time -- did observers north of the equator observe
    >>> multiple
    >>> objects close together. From what I understand the six satellites launched
    >>> are relatively small so not that bright...... of course this is mostly
    >>> guessing by me so we will have to see what becomes public knowledge - if
    >>> ever.
    >>>
    >>> Cheers
    >>> Greg
    >> _______________________________________________
    >> Seesat-l mailing list
    >> http://mailman.satobs.org/mailman/listinfo/seesat-l
    >>
    >>
    >_______________________________________________
    >Seesat-l mailing list
    >http://mailman.satobs.org/mailman/listinfo/seesat-l
    
    _______________________________________________
    Seesat-l mailing list
    http://mailman.satobs.org/mailman/listinfo/seesat-l
    



    This archive was generated by hypermail 2b29 : Tue Oct 01 2013 - 02:14:29 UTC