Name: スターリンクミッション (Starlink Mission)
Uploaded: 2021-01-14T10:24:07.000Z
Duration: 1 h 14 min 46 s
Description: VoiceTubeの動画で発音を聞きながら英語表現を覚えよう！学べる英語：

you are looking at a live view of the Falcon nine as it awaits its 9:19 p.m. Eastern time launch from Cape Canaveral Air Force Station in Florida.

Here it Space X headquarters in Hawthorne, California My name is Lauren Lions, and I'm an engineer on the StarLink team here at Space Six and welcome to the first space X launch of 2020.

Now, as many of you know, we just launched 60 Starling satellites back in November and today will be launching another 60.

That, combined with the additional 60 we launched back in May, bring our total count of Starling satellites launched over 180 with Starling Space X plans to bring high speed, low latent see brown bet broadband Internet to people across the globe, particularly to places where connectivity has been unreliable, too expensive or even completely unavailable.

Our goal is to start offering service in the northern United States and Canada later this year, expanding to a near global constellation after another 22 launches.

And of course, the more launches we have, the more opportunities we have to re use these boosters in fact, this one will be entering its fourth flight, the one that you see right there on the pat.

This first stage first flew the Telstar 18 Vantage mission in September 2018 followed by the Iridium Eight Mission in January 2019 and most recently, our first launch of 60 Starling satellites back in May 2019.

We're going to be attempting to recover this Falcon nine for stage for the fourth time on our drone ship.

Of course, I still love you, which is currently stationed about 339 nautical miles off off the east coast of Florida.

Way will also be attempting to recover a payload fairing that sorry AP lit for 1/2 using one of our fairly faring recovery vessels.

We're continuing countdown to liftoff right now, But if for some reason we have to call hold on, today's launch will have a backup opportunity.

Tomorrow, January 7th at 8:57 p.m. Eastern.

But at this time, all systems are go for an on time liftoff.

My name is Jesse Anderson, and I'm a lead manufacturing engineer here at Space six.

Right now we're looking at a live view of Falcon nine hour, 70 meter to stage liquid fueled launch vehicle.

Falcon nine rolled out to the pad with the payload and went vertical.

Early this morning, the chief engineer held a technical pull at T minus one hour and launch director held a propellant load and launch Go no go pole at T minus 38 minutes.

Falcon nine has been loading propellants since t minus 35 minutes, and currently our rocket grade kerosene or what we call our P one, is nearly fully loaded on the first stage, which is the bottom 2/3 of the vehicle that you see there on the screen.

The first stage is responsible for accelerating the vehicle through Earth's atmosphere to the edge of space with the help of nine Merlin engines.

Above that first stage is the second stage, which has a single Merlin vacuum, or EM back engine, which ignites after the first states separates.

The second stage is what will carry the starling satellites to an altitude of 290 kilometers above the earth's surface.

At this time, the second stage is fully loaded with fuel and liquid oxygen is loaded, is currently loading on both stages.

The stack of 60 satellites is safely enclosed inside of these 17 foot diameter payload faring, which is the pointed in closer on the very top of the rocket, and you could see that right there on your screen.

Once we reach the vacuum of space, we will deploy the faring as the second stage continues on its journey toe orbit.

As for whether looks like we have some mostly clear skies with some light winds overall looking good for an on time launch today in Cape Canaveral.

But we will continue to monitor this all the way down to T minus zero to ensure that weather remains good for launch.

The Air Force range is prepared to support today's mission.

Waters are clear of any ships and the range continues to ensure the safety of our launch.

With that, the vehicle satellites, weather and rains are all looking good for an on time lift off just a few minutes from now.

Now, if you've been following starlings development, you might know that most satellite Internet service is today come from geo stationary satellites.

These air single satellites that orbit the planet at about 35,000 kilometres covering a fix region above.

The starling, on the other hand, is a constellation of multiple satellites that orbit the planet at a much lower altitude at about 550 kilometres, and they cover the entire globe and because they're in a low orbit, the roundtrip data time between the user in the satellite, also known as Leighton See, it's much lower than with satellites in geo stationary orbit.

Service is like on line gaming but are usually not possible.

Another satellite broadband systems after the startling step satellites are deployed from Falcon nine at 290 kilometers above the earth.

They'll use their on board I am thrusters to raise themselves to their operational altitude of 550 kilometres.

As you may recall, these ion thrusters air powered by Krypton making starling first Krypton propelled spacecraft ever flown Now during orbit raise.

The satellites are closely clustered together and their solar arrays are positioned in a special low drag configuration, making the satellites appear visible from the ground just after deployment.

However, once the satellite's reach their operational altitude and began on station service, their orientation changes and the satellites become significantly less visible.

While it's really cool to catch a glimpse of those satellites from the ground, they can sometimes be a distraction.

StarLink is testing an experimental darkening treatment on one satellite in order to further reduce the light reflection on the satellites.

Way also make early satellite tracking data available to astronomer so they can better coordinate their observations with their satellites.

Thes measures, along with our work with leading astronomy groups, will enable Space X to bring Internet access toe underserved and unserved populations around the world without materially impacting views of the night Sky Way are currently about 5.5 minutes from liftoff.

Falcon nine is now moving into the final stages of the countdown.

This is where we allow a small amount of these super chilled liquid oxygen to flow into the Merlin engine.

Turbo pumps prior to the full flow of liquid oxygen into the vehicle to avoid any shocks to the system, liquid asked.

Oxygen is also what is creating the white puffs around Falcon Knight.

We continue to load super chilled liquid oxygen or locks into the stage until just before liftoff.

And when that super chilled liquid oxygen comes into contact with the ambient air around it, it creates the clouds that you will see around the vehicle on your screen right there and just a few moments ago are coming up in about 15 seconds, actually, at T minus 4.5 minutes.

The transporter Erector will retract away from the rocket slightly and provides in clearance of Falcon nine for lift off.

You should be able to see that on your screen.

The first and second stages are both nearly fully loaded with £1 million of kerosene fuel and liquid oxygen.

First stage should finish profit loading at T minus three minutes and second stage at T minus two minutes at T minus 60 seconds.

Fisher toe Listen in for the call out that Falcon nine is in startup.

This means that the Rockets autonomous internal flight computers have taken over the launch countdown.

Starling payloads continue to be healthy.

The Falcon nine team is tracking no issues on the rocket.

The range is green for lunch, so let's listen into the last few minutes of the countdown.

And we have just had lift off of our Falcon nine vehicle carrying our starling payload.

In just about 15 seconds from now, we will be passing through Max Q.

This is the largest aerodynamic pressure that the vehicle will see throughout a cent.

We've got an awesome view of lift off right now.

Vehicle is passing through maximum dynamic pressure.

And we just heard that call out for passing through Max Cube.

Now, coming up in about a minute will be a rapid succession of events Main engine cutoff for what we call Miko, followed immediately by stage separation and SCS one, which is second engine start.

Now, Miko is where we shut down that main engine on the first stage booster to allow the vehicle to slow down just enough to separate.

If you're just now joining us, we have an awesome onboard view of our vehicle, Falcon nine and in about 30 seconds will be those three events.

Mico main engine cut off stage separation and S.

And there is me, coz you saw those engines shut down.

Stage separation confirmed on there is separation and second engine start.

You could see that second engine on your right screen glowing bright red.

Now, in about 20 seconds, we will have faring deploy and we should be able to see this on our screen as well.

And on that left screen there you could see the grid fins.

It's it's a bit dark on the east Coast right now, so hard to see.

So, as Lauren mentioned earlier, we will be attempting to catch one of the fairing halves on a recovery vessel mystery.

But we will not be able to show this live.

So check in with our social media for updates.

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スターリンクミッション (Starlink Mission)

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