SpaceX Launched And Landed Indonesian Communications Satellite
A SpaceX Falcon 9 rocket launched the Indonesian SATRIA-1 communications satellite from Cape Canaveral Space Force Station in Florida.
Credit: SpaceX
Credit: SpaceX
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TechTranscript
00:00 T-minus 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, ignition, and liftoff.
00:14 Go Falcon, go PSF.
00:16 Stage 1 propulsion is nominal.
00:21 Vehicle is pitching downrange.
00:24 [engine noise]
00:43 That incredible view means that Falcon 9 has successfully lifted off from pad 40.
00:48 And right now we are throttling down to prepare for max Q in about 30 seconds.
00:53 As you may have heard us explain before, this is the period of highest aerodynamic pressure on the vehicle.
00:59 Power and telemetry nominal.
01:00 That's because at this point we are seeing the greatest difference in dynamic pressure,
01:04 which is increasing with the rocket's speed,
01:06 and ambient static pressure, which is decreasing as we move up through the Earth's atmosphere.
01:11 Vehicle is supersonic.
01:12 With that call out, we know that Falcon 9 is moving faster than the speed of sound.
01:16 [engine noise]
01:27 Max Q.
01:28 With confirmation that we've passed through max Q, we have three events coming up in quick succession,
01:34 starting with main engine cutoff, stage separation, SES 1, or second engine start 1.
01:40 Main engine cutoff, or MECO for short, is where all nine Merlin 1D engines will shut off
01:46 to slow down the vehicle in preparation for the next event, stage separation, or stage--
01:51 And ventula started.
01:52 Stage SEP for short.
01:53 That's where the first stage booster will separate from the second stage.
01:56 Right after stage SEP, the first stage will start its journey back to Earth,
02:00 targeting a landing on our drone ship, a shortfall of Gravitas,
02:04 which is currently stationed in the Atlantic Ocean, about 680 kilometers downrange.
02:09 Now, during that time, stage 2 will continue on its journey to space with the third event,
02:14 second engine start 1, or SES 1, on the nets, and this is where the single MVAC engine will ignite
02:20 to propel the second stage along with the PSN Cetrea payload to orbit.
02:26 In addition to these three major events, the fairing halves will also separate less than a minute after SES 1,
02:32 so keep an eye out for all of those coming up in about 10 seconds.
02:36 [ Silence ]
02:51 Main engine cutoff.
02:52 Stage separation confirmed.
02:54 [ Silence ]
03:00 MVAC startup.
03:02 So you heard the callouts there, and you can see on your screen in this great dual view that we have
03:07 that the MVAC engine on our second stage has ignited.
03:11 Now, this is the first of two second stage burns that we're tracking for this mission,
03:15 and the first stage on the left-hand side of your screen is coming back to land on our drone ship,
03:20 a shortfall of Gravitas.
03:23 Now, we are also expecting fairing deployment.
03:25 Both vehicles are on nominal trajectories.
03:27 With that, we know that both vehicles are headed in the right direction,
03:30 and as I was describing earlier, we are expecting fairing separation in just about five seconds.
03:35 [ Silence ]
03:40 Fairing separation confirmed.
03:43 As Somya mentioned earlier, reusability is part of our secret sauce here at SpaceX,
03:48 so with that confirmation of fairing separation, we know that both of those are coming home again.
03:53 The first -- or one of them is flying --
03:54 Acquisition of signal Bermuda.
03:56 One for its seventh time and the other for its ninth.
04:00 [ Silence ]
04:06 It's now T-plus three minutes and 55 seconds into today's mission,
04:11 and we have a great view of stage one on the left and stage two on the right.
04:15 In order to complete today's landing, the first stage has two more burns left.
04:19 Next up will be the entry burn where three of the Merlin engines on the first stage will reignite,
04:24 and this will help slow down the F9 first stage as it reenters the upper part of the Earth's atmosphere.
04:29 That entry burn should start in about two-ish minutes from now and will last about 20 seconds.
04:35 [ Silence ]
04:48 As we can see, two of the four hypersonic grid fins that are on the --
04:54 that are positioned near the base of the interstage on the booster,
04:58 and stage one is currently using nothing but the grid fins for steering as it's returning back to Earth.
05:04 [ Silence ]
05:13 Those little puffs of gas, those are nitrogen gas bursts for attitude control,
05:18 and they also help orient the rocket on its way back down.
05:21 [ Silence ]
05:42 And some really awesome views of planet Earth behind stage two.
05:50 And again, that entry burn on the first stage coming up in about a minute.
05:55 [ Silence ]
06:04 Both vehicles are on nominal trajectories.
06:07 [ Silence ]
06:21 Like I promised, we have great views of Earth behind MVAC and behind the first stage
06:27 as it's coming back down to Earth.
06:34 [ Silence ]
06:47 Stage one entry burn startup.
06:50 You can see that three of those engines have now relit engines one, five, and nine for the entry burn.
06:58 It's about 20 seconds for this burn.
07:01 [ Silence ]
07:07 Stage one entry burn shutdown.
07:10 Now with confirmation of entry burn shutdown, we have one last burn before the first stage attempts to land on our drone ship, and that is --
07:16 Stage one FTS has saved.
07:17 And that is the landing burn.
07:19 During the first stage landing burn, a single Merlin engine, E9, will relight and slow the vehicle down for its landing attempt on our drone ship, a shortfall of Gravitas.
07:29 As a reminder, the booster supporting today's mission has now flown for its 12th time, having previously supported CRS-22, Crew 3 and Crew 4,
07:38 and will be flying for its 12th time.
08:02 Stage one transonic.
08:09 Stage two FTS has saved.
08:16 You can see that EMBAC continuing to glow bright orange.
08:20 And Chelsea, go one.
08:30 Gravitas insertion.
08:32 EMBAC shutdown.
08:34 Great call-outs for SICO-1 and nominal orbital insertion.
08:38 Stage one landing burn.
08:46 Expected loss of signal, Cape Canaveral.
08:50 There's that view of landing burn.
08:52 Stage one landing leg deploy.
09:02 And a great view of landing.
09:05 This landing marks the 12th successful landing for this particular booster,
09:09 and marks our 201st overall successful recovery
09:12 of an orbital-class rocket.