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#100
by
docmordrid
on 03 Sep, 2020 12:50
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The host also reported laser link birds are in orbit and have been tested.
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#101
by
Steven Pietrobon
on 03 Sep, 2020 12:50
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Fairing separation.
T+4 minutes.
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#102
by
Steven Pietrobon
on 03 Sep, 2020 12:51
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T+5 minutes. Nominal trajectories.
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#103
by
Steven Pietrobon
on 03 Sep, 2020 12:52
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#104
by
Steven Pietrobon
on 03 Sep, 2020 12:53
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#105
by
Steven Pietrobon
on 03 Sep, 2020 12:54
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#106
by
Steven Pietrobon
on 03 Sep, 2020 12:55
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#107
by
Chris Bergin
on 03 Sep, 2020 12:56
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#108
by
Steven Pietrobon
on 03 Sep, 2020 12:56
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#109
by
Steven Pietrobon
on 03 Sep, 2020 12:58
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Upcoming event.
00:14:47 Starlink satellites deploy
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#110
by
Steven Pietrobon
on 03 Sep, 2020 13:00
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One minute to separation.
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#111
by
Steven Pietrobon
on 03 Sep, 2020 13:02
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#112
by
Steven Pietrobon
on 03 Sep, 2020 13:03
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End of webcast.
Congratulations to SpaceX for the successful launch of another 60 Starlink satellites!
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#113
by
FutureSpaceTourist
on 03 Sep, 2020 13:31
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#114
by
FutureSpaceTourist
on 03 Sep, 2020 13:32
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#115
by
OneSpeed
on 03 Sep, 2020 14:31
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Here is the Starlink V1.0 L11 telemetry. The L10 telemetry had a glitch at the end of the S2 burn, so I'm comparing with L7 instead.
There are a few differences:
1. The L11 throttle bucket is slightly earlier than previous missions.
2. Although an S2 throttle down was announced at T+08:00 on the mission webcast, there is no evidence of it in the data.
3. Both launches inserted at 215km altitude, but L11 was travelling 6m/s slower, at 7535m/s. Presumably the apogee will be slightly less.
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#116
by
FutureSpaceTourist
on 03 Sep, 2020 15:43
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SpaceX launch photo (I assume by Ben Cooper)
https://twitter.com/spacex/status/1301545239971127301Falcon 9 launches 60 Starlink satellites to orbit – Starlink will deliver high-speed broadband internet to locations where access has been unreliable, expensive, or completely unavailable → starlink.com
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#117
by
Dean47
on 03 Sep, 2020 16:10
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I was looking at the fantastic data plots provided by OneSpeed and had a question for the rocket scientists in the forum. This may have been discussed at another forum. If so, I apologize in advance. My question is: As I recall, during the manned Dragon II launch Bob and Doug mentioned that the second stage ride seemed much rougher than first stage. The acceleration data in OneSpeed's chart seem to show a gradual increase in "noise" starting about halfway through the second stage burn. The noise, or vibration, gets progressively worse toward the end of the burn and the data from the latest launch (L11) even shows signs of periodic acceleration spikes. Does this relate to the "rough ride" noted by the astronauts?
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#118
by
FutureSpaceTourist
on 03 Sep, 2020 16:55
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twitter.com/trevormahlmann/status/1301505172259123200
12th batch of Starlink: on their way to LEO🚀
📸for @ArsTechnica
⚙️/⬇️/🖼: tmahlmann.com/photos/Rockets…
https://twitter.com/trevormahlmann/status/1301508646216577025Nothing like starting a day off on the Space Coast with a rocket launch🚀
Liftoff of the 12th Starlink mission, reflected in the @NASAKennedy turn basin🛰
⚙️/⬇️/🖼: tmahlmann.com/photos/Rockets…
Edit to add:
https://twitter.com/rdanglephoto/status/1301560981961805825 The #SpaceX #Falcon9 launches 60 more #Starlink sats to orbit and landed the first stage on the droneship 'Of Course I Still You'. Pretty much non stop these days!
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#119
by
billh
on 03 Sep, 2020 17:35
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I was looking at the fantastic data plots provided by OneSpeed and had a question for the rocket scientists in the forum. This may have been discussed at another forum. If so, I apologize in advance. My question is: As I recall, during the manned Dragon II launch Bob and Doug mentioned that the second stage ride seemed much rougher than first stage. The acceleration data in OneSpeed's chart seem to show a gradual increase in "noise" starting about halfway through the second stage burn. The noise, or vibration, gets progressively worse toward the end of the burn and the data from the latest launch (L11) even shows signs of periodic acceleration spikes. Does this relate to the "rough ride" noted by the astronauts?
That's quite possible. Small fluctuations in thrust will product small fluctuations in acceleration. As the fuel is consumed, the mass of the vehicle decreases and the amplitude of the acceleration fluctuations increases.