Looking more and more like a failure at the point of the battery hot-swap. As in, they didn't.
I plotted the last few seconds of telemetry to show the acceleration over time, there's a couple of seconds where the thrust drops by about 20% before the thrust drops to zero.pic.twitter.com/k7ysC335Zh
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The callout right after the video was lost was that battery discharge was nominal and that hot-swap was in 30 seconds.
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Old batteries running out of juice?
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it is heavily dependent on that with their pump system
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Tämä twiitti ei ole saatavilla.
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Could be drag, also could be numerical error if Scott just took the numbers from the livestream
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As soon as the OCR data is up on Launch Dashboard, I can Flight-Club-sim it to see exactly what happened to the thrust profile
Kiitos. Käytämme tätä aikajanasi parantamiseen. KumoaKumoa
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If acceleration is still positive in that red section, doesn't that mean there's still thrust that's just continuing to decay? No thrust should mean a constant negative acceleration due to gravity.
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No, they were partially orbital. Remember, on the way to orbital velocity, some of the gravitational constant is slipping over the horizon.
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Seems like the battery swap failed and the decaying thrust is the depleated batteries hitting their exponential drop off as you reach depletion. So they wouldn’t have had a sudden cut of in thrust, but a quick draw down as the main batteries die out.
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This is also in line of them losing video feed while still having other telemetry due to weak signal. If the voltage was low, RF signal amplifier would have been affected as well.
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