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
05:01Elizabeth
05:01Elizabeth
05:02Elizabeth
05:02Elizabeth
05:02Travel
05:02shots
05:03ли