Falcon Heavy | Миссия Viasat-3 F3 | SpaceX

Hinzugefügt: 2026-05-08

[00:00:02]So, with that, Falcon Heavy is now fully loaded with nearly 3 million pounds of propellant.

[00:00:09]Coming up next in the launch countdown will be ground gas closeouts. It's about 20 seconds from now.

[00:00:15]Looking ahead a little bit, at the T-minus 1 minute mark, Falcon Heavy will enter startup and the onward flight computers will take over the launch countdown.

[00:00:35]Ground gas closeouts.

[00:00:40]You may be able to hear and certainly see an increase in white cloud venting.

[00:00:44]And this comes from venting down the TE liquid oxygen fill line.

[00:00:50]Now, we're heading towards that T-minus 1 minute mark, at which point Falcon Heavy will enter startup.

[00:01:06]Falcon Heavy is in startup.

[00:01:09]Stages 1 and 2 will now begin to pressurize for launch.

[00:01:20]Launch director, go for launch.

[00:01:23]At T-minus 40 seconds, all systems are go for launch. Let's listen in to the final seconds of the countdown.

[00:01:34]T-minus 30 seconds.

[00:01:48]T-minus 15 seconds.

[00:01:54]T-minus 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, ignition, and liftoff. Go, Falcon Heavy. Go, ViaSat.

[00:02:14]M1D chamber pressures are nominal.

[00:02:16]Vehicle is pitching down range.

[00:02:34]At T plus 30 seconds into flight, Falcon Heavy has successfully lifted off from launch complex 39A at Kennedy Space Center. We're now throttling down the engines to prepare for max Q, which is the point of maximum aerodynamic pressure during ascent. Max Q occurs when the combination of speed >> are nominal.

[00:02:52]speed and air pressure puts the greatest stress on the vehicle.

[00:03:01]Falcon Heavy is supersonic.

[00:03:03]Now, we just heard the callout that the vehicle is now traveling faster than the speed of sound.

[00:03:08]Max Q coming up in a few seconds.

[00:03:14]Max Q.

[00:03:16]Now, we've passed the moment of peak mechanical stress on the rocket and M1D engines are throttling back up.

[00:03:23]Now, we have several events coming up in a few more than we're accustomed to with Falcon 9 missions, so let's get into it.

[00:03:29]First will be BECO, or booster engine cutoff, when the engines on the two side boosters shut down.

[00:03:35]After that, the side boosters will separate from the center core and perform a flip maneuver using their small thrusters to head back towards Earth.

[00:03:42]Next, the side boosters will initiate boost back burn to send the vehicles towards landing zones 2 and 40.

[00:03:48]After that is main engine cutoff, or MECO, when all the engines on the core shut down. And that will be followed by stage separation, where the center core and second stage are pushed apart. Few seconds later, we'll see that second stage Mvac ignite to continue to carry the payload to orbit. And finally, once in space, the fairings will be deployed from stage 2.

[00:04:10]And we're about 15 seconds away from the start of that sequence of events.

[00:04:15]First again, we're looking out for BECO, side booster separation, booster flip, and boost back burn startup.

[00:04:29]Booster engine cutoff. Side booster separation confirmed.

[00:04:37]>> [applause] >> Mvac chill.

[00:04:45]NY and PY boost back startup.

[00:04:49]Great news. At this point, both Falcon Heavy side boosters are performing the boost back burn. And this is the first of three burns that each side booster will undergo on the way back to Cape Canaveral Space Force Station.

[00:05:00]The primary objective of this burn, the boost back, is to quickly reorient the side boosters onto the required return trajectories. And that's particularly important in the event of a return to launch site like today, as opposed to a drone ship ocean recovery.

[00:05:14]These boosters are heading towards landing zones 2 and 40.

[00:05:18]Meanwhile, on the center core, the nine M1D engines are continuing to power Falcon Heavy on its nominal trajectory and throttled back up following booster separation.

[00:05:27]We're about 20 seconds away from boost back burn shutdown, at which point the boosters will continue to coast until they restart for entry burn.

[00:05:36]Coming up next, we're standing by for the boost back burn shutdown, which will be followed by main engine cutoff on the center core, stage separation, and second engine start one of the Mvac engine.

[00:05:55]NY and PY boost back shutdown.

[00:05:59]Main engine cutoff.

[00:06:01]Stage separation confirmed.

[00:06:04]>> [applause] >> Mvac chill. Stage two for the burn.

[00:06:14]Fantastic news and a great view there on your screen following stage separation, and we're now looking out for fairing separation.

[00:06:24]All vehicles are following a nominal trajectory.

[00:06:28]Fairing separation confirmed.

[00:06:35]>> [applause] >> Great view there of the fairing in the background. And after this action-packed few minutes, we had two side boosters separate, perform their flip maneuvers after engine shutdown, followed by a complete boost back burn. The center core had its own engine cutoff right before