Amazon a lancé les premiers satellites de sa constellation Kuiper, qui vise à proposer une connexion internet très haut débit depuis l'espace et concurrencer le géant Starlink

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00:003, we have ignition, 2, 1

00:03Ignition and full thrust, 5 good SRV

00:06And liftoff of the United Launch Alliance Atlas V rocket

00:10Carrying satellites for Amazon's Project Kuiper and Internet Constellation

00:14Marking the start of the new chapter and low earth orbit satellite connect

00:18VU is now on closed loop control

00:19Engaging first throttle segment

00:21And we've completed our pitch program

00:25Engine operating parameters continue to look good

00:30And we've successfully completed our roll program

00:34Hydraulics continue to operate nominally

00:37Mach 1, Atlas V is now supersonic

00:41Body rates continue to look good

00:45Engine continues to operate as expected

00:48Throttling back up

00:51You are hearing Sarah Bailey, Glasgow, providing launch vehicle ascent data

00:56We are now 7 miles in altitude, moving at 1700 miles an hour

01:02Now passing 1 minute into flight

01:04Vehicle continues to pass through the center of the rain track as expected

01:12SRBs continue to operate nominally

01:17Throttling down, engine continues to burn as expected

01:22Body rates continue to look good

01:27Vehicle is now one half of its liftoff weight

01:30Max Q passing through maximum dynamic pressure

01:34Coming up on SRB burnout

01:38And we have good indication of SRB burnout

01:4210 seconds from SRB jettison

01:43Throttling back up

01:45And we have good indication of jettison of all 5 SRBs

01:53Engine continues to burn normally

01:55We are now 32 miles in altitude, moving at 4000 miles an hour

02:01We just heard confirmation of the solid rocket booster jettison

02:04These additional motors augmented the thrust at liftoff to give Atlas rocket

02:08An extra boost to reach its circular low Earth orbit destination

02:11These SRBs are called GYM 63s which stand for graphite epoxy motor

02:15And are 63 inches in diameter

02:17The most obvious difference you'll see between Atlas and Vulcan SRBs is the nose cone shape

02:22Vulcan has a conical nose cone whereas Atlas has a duckbill or o-drive shape

02:26We're coming up here on our next mission event

02:29Jettison of the payload fairing

02:30Let's listen in to Sarah

02:31It continues to move down the center of the range track

02:34And is moving at 5,300 miles an hour

02:37Body rates continue to operate nominally

02:44And we are now holding acceleration at 2.5 G's in preparation for payload fairing jettison

02:50And we have activated the Centaur reaction control system

02:55And we have passed the Karman line

02:59We have exited Earth's atmosphere

03:00Vehicle is now one-fourth of its liftoff weight

03:04And we have good indication of payload fairing jettison

03:10And good indication of CFLR deck jettison

03:15Engine continues to operate as expected

03:17Flight commentator Sarah Bailey-Glasko just called out confirmation of payload fairing jettison

03:23The composite fairing protects the spacecraft as it pushes through the harshest parts of the atmosphere

03:28Next, we'll hear call-outs for cutoff of the Atlas first stage engine

03:31And separation of the booster stage

03:34Followed by ignition of ULA Centaur second stage

03:36These events occur when the first stage has escaped Earth's atmosphere

03:41Getting above the Karman line and into space

03:43The Centaur upper stage with the Kuiper satellites attached

03:46Then takes over on a trajectory to a precise location in space

03:49Let's listen in as we approach these milestones

03:52Body rates are smooth

03:54Hydraulics continue to look good

03:5630 seconds to Pico

03:59Space chill down in progress

04:02Temperatures are operating as expected

04:03You respond to open-loop control as expected

04:08Engine contains operate nominally

04:13And we've completed boost phase chill-down as expected

04:21And we have good indication of booster engine cutoff

04:29And we have good indication of Centaur separation

04:36Restart on fuel and locks, good staging

04:39Ignition and full thrust, Arlton is running nominally

04:47Steering has been enabled as expected

04:52Engine's are continuing to operate as expected

04:57End simend Benjamin

04:58Ahand

04:59Pico

04:59Liz

05:01Elizabeth

05:02Elizabeth

05:02Travel

05:02shots

05:03ли

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