SpaceX, Falcon 9, Rocket 's 21st 60-satellite Starlink launch, rocket landing too!

This is the largest structural load that the vehicle sees on ascent. Music we’ve got an awesome supersonic awesome view of first stage of falcon 9 there on your screen, maxq there’s that callout that we’ve passed through max q now in about a minute we’ll have three events happening within seconds of each other. The first will be main engine cut off or what we call miko, followed by stage separation and ses one or second engine start. One now miko is where we shut down all nine of the m1d engines on the first stage to slow the vehicle down in preparation for in preparation for stage separation and stage separation is where the first stage separates from the second stage. Vehicle is following a nominal trajectory good call outs. There first stage will then make its way back to earth and attempt to land on our drone ship. Just read the instructions, while stage two continues its journey with the third event being. Second, engine start one and that’s, where we light up that mvac engine and it will propel the second stage with our starlink satellites to orbit now we’re, just about 10 seconds or so away from those three events that is miko stage, separation and ses one. We go stage, separation, confirmed and recognition, and there we just had miko and stage separation on your right hand, screen you’re looking at that mvac engine on the second stage confirming scs 1 and a good call out that stage 2 is nominal, continue to follow nominal trajectories.

Both vehicles are nominated and there you can see on your screen. The fairing halves have been deployed. They are now making their way back to earth and, as a reminder, we will be attempting to recover the fairing house today with our recovery ships go searcher and go navigator all right as stage two heads towards its targeted drop off orbit stage. One will execute two burns in order to make its way back to earth. The first is the entry burn where three of the merlin 1d engines will reignite, and this helps slow the stage down as it re enters the upper part of the earth’s 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 about t plus four minutes into flight and if you’re just catching up with us, we had a successful launch Of falcon 9 from cape canaveral, a space launch complex 40., if you’re looking at a live view of the falcon 9 stage 2 as it delivers our starlink payload to orbit stage 1 is cruising back to our drone ship. Just read the instructions in the atlantic ocean. Now we’ll continue to watch stage two here on a nominal ascent for a few minutes. As a reminder, the merlins on the first stage are optimized for sea level, and these achieve around 190 000 pounds of thrust during a scent and descent.

The mvac engine is optimized for vacuum and achieves about 220 500 pounds of thrust on the single engine. The starling constellation is in low earth orbit or leo at around 550 kilometers. Now most geostationary, satellites uh are at a thousand kilometers altitude, and these are the general satellites that we see uh in most other systems when satellites are farther from earth. The round trip data time between the user and the satellite, also known as latency, is much higher, resulting in poor performance for activities like video calls and gaming we’re about 30 seconds out here from entry burn. As a reminder, falcon 9 is equipped with four hypersonic grid fins positioned near the top of the first stage on stage one using nothing, but uh excuse me that guided back during its reentry to the ground stage, one entry, barn startup and there we go. We have entry burn, start stage, one entry burn shutdown, beautiful and entry burn cut off stage. One is going to continue its descent to our drone ship. Just read the instructions as stage one continues to descend. It uses occasional bursts of nitrogen gas for attitude control, and sometimes you can see this, although in the darkness tonight we may not be able to to land the falcon 9 first stage is also equipped with four landing legs made of state of the art, carbon fiber And aluminum honeycomb these are placed symmetrically around the base of the rocket and deployed just prior to landing after first stage landing stage.

Two has a coast phase, then a short burn and then another coast phase. Before deploying the satellites we’re about 30 seconds out from landing burn stage. One landing burn ten seconds out. We may see a video cut out here stage. One landing leg deploy Music all right and there you can see. We’Ve landed first stage on our drone ship, just read the instructions.

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Written by freotech


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