Given your experience, the youth of TM's software and
hardware, and the prediction of supersonic flight by the
simulator, I'm willing to believe we may well have been
supersonic or at least transsonic on Saturday.  However, it
will be really hard to tell, I think.  We might be able to
cal some stuff from the external or internal video, but that
sounds like a ton of work to me.

        Bart

In message <4a24d3ae.8000...@twaves.org> you wrote:
> Well that's just it; I was at the road-station two miles away and I =
> 
> never heard the engine sound. All I heard were two cracks about ?15? =
> 
> seconds after launch. Would I have heard a chuff sound if I never heard =
> 
> the engine sound? Just curious.
> 
> Glenn
> 
> I wrote:
> >
> >
> >
> >> That was the motor chuffing, we think.
> >
> > Yeah, I don't think it's possible to hear a sonic boom if you can =
> 
> > already hear the engine (though the chuff sound was impressive). My =
> 
> > understanding is that a sonic 'boom' comes from the fact that you hear =
> 
> > no sound, then all of the sound at once when the shock arrives at your =
> 
> > location.
> >
> >
> >
> >> Glenn LeBrasseur wrote:
> >>> Is the speed measurement a little off? I am sure I heard a sonic boom.
> >>> In fact I thought I heard two cracks seperated by about 1/2 second?
> >>>
> >>> Glenn
> >>>
> >>> Glenn LeBrasseur,  KJ7SU
> >>> gle...@twaves.org
> >>>
> >>>
> >>>
> >>> Quoting Keith Packard <kei...@keithp.com>:
> >>>
> >>>> Here's the data I captured from the on-board telemetrum data log.
> >>>>
> >>>> The graph is a bit messy as it has so many lines.
> >>>>
> >>>> Here's some numbers too:
> >>>>
> >>>> Max height above ground: 3864m (baro)
> >>>> Max speed:                308m/s (baro) 286m/s (accel)
> >>>> Max accel:                120m/s=B2 (accel)
> >>>> Time to apogee:            28.2s
> >>>>
> >>>> -- =
> 
> >>>> keith.pack...@intel.com
> >>>>
> >>>
> >>>
> >>>
> >>> _______________________________________________
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> >>>
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> >>
> >> -- =
> 
> >> -------------------------------------------------------
> >> Andrew Greenberg
> >>
> >> Portland State Aerospace Society (http://psas.pdx.edu/)
> >> and...@psas.pdx.edu  P: 503.788.1343  C: 503.708.7711
> >> -------------------------------------------------------
> >>
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