We throttled the engines down in preparation for max q or maximum aerodynamic pressure on the engines, and that is coming up in just about 10 seconds here max q. We did just pass through max q and in a minute we will have three events happening in back to back in rapid succession and thats main engine, cutoff or miko stage, separation and second engine startup, one now, first main engine cutoff or miko. This is where all nine m1d engines will shut off to slow the vehicle down in preparation for stage separation, where the engine chill started, where the first and second stage will separate with the first stage, making its way back down to earth for landing. And the second stage continuing on its journey to the third event or second engine startup one – and this is where the mvac engine lights up and propels. The second stage, along with the sterling satellites to orbit, were about 30 seconds from main engine cutoff, and you can see that beautiful plume of the rocket as it is soaring in the sky me go. You can see the lights from the engine. The light from that. First stage, engine cut off and back ignition confirmed from main engine cutoff, you saw the successful stage separation and the second stage engine has started up from those live views on your right there that air separation confirmed merlin vacuum engine, and here we are waiting for fairing Separation, you can see that great view of the two fairing halves separating from the starling satellites todays flight marks the 24th time spacex has re flown the falcon fairing house since november of 2019 and again this was our second flight for one of the fairing halves and A third for the other half well be attempting to recover the haves again today using our recovery vessel nrc quest, which previously supported dragon recovery missions.
You can see stage two here with the mvac engine lit up and carrying our starlink payload to orbit and with the stage two headed towards its targeted drop off orbit stage, one will be executing two burns in order to make its way back down to earth. The first is the entry burn where three of the m1d engines will reignite, and this helps to slow the stage down as it re enters the upper part of the earths atmosphere. The second burn is the landing burn, and this is a single engine burn. That brings the vehicle speed down rapidly in order to land on the drone ship if youre just catching up with us, we had a successful launch of falcon 9 from vandenberg space force base, flick 4e and youre looking at a live view of falcon 9s second stage. As it delivers our starling payload to orbit, both vehicles are following nominal trajectories, both stage one and stage two are on nominal trajectories right now, with stage one is cruising back to our drone ship. Of course, i still love you in the atlantic ocean in the pacific ocean. Sorry as a reminder, todays mission marks the 10th flight for this particular booster, the second flight for one fairing half and the third flight for the other. Half reusability is critical to what we do at spacex. It allows us to re re fly the most expensive parts of the rocket which, in turn drives down the cost of space access.
Now the stage one entry burn should be coming up here in a little under a minute, and this will be a 20 second burn of that first stage. Some of you may know that falcon 9 is named after the millennium falcon from star wars, and the number nine indicates the number of merlin 1d engines on the first stage. The merlins on the first stage are optimized for sea level, and these achieve 190 000. Pounds of thrust during ascent and descent and the mvac engine from merlin vacuum engine that you see on your screen right now is optimized for two hundred and twenty thousand five hundred pounds of thrust in vacuum stage. One entry burn startup. What a cool view on your left of the stage one entry burn start up there. This is a 20 second burn of three of the merlin 1d engines of the first stage stage. One and she burned shut down. We did have vehicles continue to follow nominal trajectories. We did have fts it saved, we did have a successful stage, one entry burn and you can see those super cool live views from the stage one there as it is re entering the earths atmosphere. We cant quite make it out from those stage one views, but there is a lot of soot on that first stage of the booster, and that is because the rocket grade, kerosene or rp 1 that is used as a fuel in falcon 9, is carbon based and When it burns it generates, and then, as the booster approaches its landing site during descent, it does this long re entry burn, which we just saw, that slows it down, uh prior to re, entering the atmosphere and while it and when it re enters uh with its Engines first, the booster actually flies through its own plume, which deposits the sub on the rocket now stage.
One landing burn should be starting here very shortly stage. Two fts is safe stage. One landing burn has just started. That is our drone ship. Of course, i still love you in the pacific ocean uh, as you can see from that beautiful view, atlanta confirmed of stage one having landed on our drone ship for the tenth time. This marks our 90th overall successful recovery of a falcon 9 first stage and the one 24th successful launch of a falcon 9.. We just missed it, but we did have a successful second engine cut off one and a confirmation of a good orbit up. Next, we will have a coast phase, followed by the second burn of our second stage engine. These additional burns allows us to modify the orbits of our payloads more efficiently than launching directly into the final orbit, so today our second stage will coast for about 35 minutes until we reach apogee or the highest point of the orbit, where we will conduct that second Stage burn: you can follow the progress of the second stage with this animation showing where we are around the earth and well see you back here at t plus 44 minutes 30 seconds for our second engine start 2.