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#100
by
Robotbeat
on 14 Mar, 2021 20:39
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It either isn't ITAR violating or it was *always* ITAR-violating as "adversaries" have easy access to better radio equipment than amateurs.
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#101
by
Comga
on 14 Mar, 2021 21:03
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...
Considering the assymetrical pooling, this is propable during the yeet-maneuver in which the stage is spinning head over heels, and thus not in 0g.
That would make sense, except you can see from the exterior shots (either those in which the Earth is visible, or those where you can see non-moving shadows on the Merlin) that it is not yet in its flat spin.
So I guess it must be surface tension, but I'm surprised there aren't some LOX globules floating about.
Perhaps the second stage is venting slightly off axis and generating a fraction of a milli-gee but not torque and rotation.
edit: venting as in ulage before a deorbit burn. It appears to be serving that purpose.
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#102
by
ulm_atms
on 14 Mar, 2021 22:53
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https://twitter.com/r2x0t/status/1371054115875348480
Freshly received #SpaceX #Falcon9 video, enjoy these incredible shots!
Thanks goes to @uhf_satcom for receiving this signal. We will be listening on 2nd orbit as well.
Wow....they don't leave much margin do they?
That's what...a few seconds from the depletion sensor being triggered? I've seen LOX tank pics but not with the bottom center baffle uncovered....
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#103
by
edkyle99
on 14 Mar, 2021 23:07
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https://twitter.com/r2x0t/status/1371054115875348480
Freshly received #SpaceX #Falcon9 video, enjoy these incredible shots!
Thanks goes to @uhf_satcom for receiving this signal. We will be listening on 2nd orbit as well.
Wow....they don't leave much margin do they? That's what...a few seconds from the depletion sensor being triggered? I've seen LOX tank pics but not with the bottom center baffle uncovered....
At this point in the life of the v1.2 Falcon 9, they don't need a lot of margin. They have a lot of flight data that builds confidence. They can cut residuals to the bone. They only need one second of Vacuum Merlin restart for Starlink, plus a bit for deorbit. They obviously cut it very close for deorbit because there have been a couple of stages that failed to deorbit as planned. At any rate, there's a sump that is full of LOX here probably, plus the piping, which itself holds quite a bit.
- Ed Kyle
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#104
by
FutureSpaceTourist
on 14 Mar, 2021 23:33
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#105
by
CorvusCorax
on 15 Mar, 2021 00:36
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#106
by
Jansen
on 15 Mar, 2021 00:44
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B1051-9 has been secured and OCISLY droneship is en-route to Port Canaveral, following this morning's launch. ETA Tue/Wed (Subject to change)
That’s really fast! Usually it takes a day to secure the booster and get underway.
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#107
by
FutureSpaceTourist
on 15 Mar, 2021 01:41
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It either isn't ITAR violating or it was *always* ITAR-violating as "adversaries" have easy access to better radio equipment than amateurs.
I think it must be the former, as SpaceX have shown live tank shots multiple times. If they hadn’t I wouldn’t have been comfortable posting it here.
(Contrary to appearances, I don’t post everything I see on-line!
)
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#108
by
su27k
on 15 Mar, 2021 02:06
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Unexpected 'parabola of light' over NC this morning was SpaceX satellite launchPeople across the Triangle were surprised by an unexpected phenomenon in the skies over NC on Sunday morning.
Phone calls, pictures and videos poured in from WRAL viewers, as people sent images of a large parabola of light moving across the skies around 6:10 a.m.
Some called it space debris. Others referred to it as a meteor. Still others reported "possible aliens."
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#109
by
Steven Pietrobon
on 15 Mar, 2021 07:51
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Here's a better screen grab of the LOX tank.
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#110
by
OneSpeed
on 15 Mar, 2021 09:51
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It would be interesting to see the difference between two flights of the same booster, perhaps L16 and L21 (both booster 1051).
It's a little hard to read with all the noise in the acceleration values, but here are the B1051 boost phase plots for L3, L16 and L21.
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#111
by
Citabria
on 15 Mar, 2021 15:56
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It's a little hard to read with all the noise in the acceleration values, but here are the B1051 boost phase plots for L3, L16 and L21.
Have you tried smoothing the acceleration values? Or differentiating over a longer delta-time to reduce noise?
I don't know how you are calculating acceleration but, for example, instead of An = (Vn - Vn-1) / (Tn - Tn-1) you could use (Vn+1 - Vn-1) / (Tn+1 - Tn-1) or (Vn+2 - Vn-2) / (Tn+2 - Tn-2) or such. There are even more sophisticated FIR differentiating filters which use various coefficients in summing Ci * Vn+i for several values of i.
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#112
by
FutureSpaceTourist
on 15 Mar, 2021 19:10
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#113
by
FutureSpaceTourist
on 15 Mar, 2021 22:34
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https://twitter.com/spacexfleet/status/1371604368701669380SpaceX recovery fleet status as of March 15th!
Expecting lots of arrivals tomorrow. GO Searcher/Navigator are due after 6:30am ET with the fairing.
OCISLY and B1051-9 are due after 11am ET (Likely mid-afternoon)
Support my work: ko-fi.com/spacexfleet
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#114
by
FutureSpaceTourist
on 16 Mar, 2021 10:49
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GO Searcher has returned one fairing half. There were some Fleetcam issues, so here’s a distant shot
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#115
by
Jansen
on 16 Mar, 2021 13:14
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#116
by
FutureSpaceTourist
on 16 Mar, 2021 19:08
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#117
by
Jansen
on 16 Mar, 2021 22:08
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#118
by
FutureSpaceTourist
on 17 Mar, 2021 00:17
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#119
by
FutureSpaceTourist
on 17 Mar, 2021 19:13
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twitter.com/gregscott_photo/status/1372243211608072192
A NEW RECORD: 2 boosters (1051-9 & 1058.6), 1 droneship OCISLY, 1 Fairing half, 2 practice Dragon Capsules, 2 fairing ships (Chief & Tree) & Go Quest all together for 1 port shot I got today from above. Its never happened before & maybe never happen again. #SpaceX #NASA @elonmusk
https://twitter.com/gregscott_photo/status/1372243657789739012 A few more pics from this mornings helicopter ride.
(with some floating drops)
That's what...a few seconds from the depletion sensor being triggered? I've seen LOX tank pics but not with the bottom center baffle uncovered....
(with some floating drops)
)