Blastoff! SpaceX launches 5 giant BlueBird smartphone satellites, nails Florida landing

Published: Sep 11, 2024 Duration: 00:08:54 Category: Science & Technology

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vehicle is pitching down range stage one propulsion is nominal copy your alarms at t+ 33 seconds and counting Falcon 9 has successfully lifted off from slick 40 after clearing the tower we tilt or gimbal the engines to initiate a roll maneuver which you may notice in the stage one camera view this enables the vehicle antennas to stay in the best position for communicating with the ground and in just a few seconds we'll be throttling down the engines in preparation for Max Q or maximum aerodynamic pressure vehicle is supersonic Max q and there's Max q and from this point on while Falcon 9 is still accelerating to an orbital speed of about 17,500 mph aerodynamic pressure on Falcon decreases as we approach the vacuum of space and back chill started now we have six events coming up in quick succession and we should hear all of these called out by Mission Control starting with moo then stage separation stage one flip second engine start one or SCS one and the first and the first stage boost back burn and lastly fairing separation after stage one shuts down its engines and separates from the second stage the booster turns itself around in a flip maneuver to make its way back to land near the launch site the Boost back burn is a controlled engine burn that both slows the booster's forward velocity and then propels it towards its Landing site after boost back stage stage one will continue to coast in micro gravity to the highest point of its flight called the apy it will then begin to descend cut off there we just heard Mo stage separation confirmed stage separation and back ignition and sces one start great call outs there and a great view of that mvac engine lighting up so after boost back it will then begin to descend under the acceleration of gravity until it's time to relight the engines for entry burn fairing separation confirmed great call out there for fairing separation we will be attempting to retrieve these fairing halves once they fall back to Earth with our recovery vessel go Cosmos coming up next we will have Boost back shutdown right on time both vehicles are nominal trajectory so we're now about t plus 3 minutes and 48 seconds into today's Mission and our next major mission Milestone will be the first stage entry burn which will take place just past the t+ 6 Minute Mark to start the entry burn we will relight three of the m1d engines which is really similar to pumping the brakes to slow down the vehicle as it passes back into the Earth's atmosphere the entry bur helps reduce the heat generator from the friction of the of the atmosphere and reduces the aerodynamic forces acting on Falcon which helps maintain controlled flight and prepare for the landing burn we are about 1 minute and 15 seconds away from the first stage entry burn the Merlins on the first stage are optimized for sea level and these achieve about 190,000 lbs of thrust each during ascent and descent and at liftoff Falcon 99's first stage has thrust that's greater than five 747 airplanes at full power and the enac engine that you see burning on your screen has a a much wider nozzle and that one is optimized to 22,500 pounds of thrust in vacuum that entry burn coming up in about 30 seconds where Falcon 9 will decelerate by firing its Merlin engines stage one entry burn you can great call out there and you can see the entry burn just completed but you can see that uh that the stage one is still continuing to move really really fast even though it is slowing down during entry burn the vehicle is flying through Merlin's exhaust gases or or its plume which deposits a layer on the vehicle surface and that soot comes from the carbon based fuel that Falcon 9 uses and with each flight the soot builds up a little bit more on the outside of the vehicle we have Landing burn coming up in about 30 seconds from now stage one Landing burn great call for landing burn Landing leg deploy St landing and that was the 13th launch and Landing for this first stage this Landing marks spacex's 347th recovery of an orbital class rocket including first stage Landings for Falcon 9 and Falcon heavy stage two is in terminal GS we have seo1 coming up in about stage two FTS 15 seconds from now and back shut down great call out we just had seo1 and we aren't expecting to have ground station coverage for the first three deployments today so we'll be returning around t+

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