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m. Eastern time launch from cape canaveral space force station in florida, my name is andy tran and i’m. A production supervisor here at spacex welcome to the webcast for spacex’s transporter one mission it’s our first dedicated small, set rideshare program, launch and third launch of 2021. onboard. This mission are 133 commercial and government spacecraft. In addition to 10 starlink satellites, the most spacecraft ever deployed on a single mission, this count includes cubesats microsats and two orbital transfer vehicles, sometimes called space tugs which would deploy their spacecraft. After after separating from falcon 9. spacex created the smallsat rideshare program to provide small site operators with competitive pricing, increased flight opportunities, flexibility and, most importantly, a ride to space on spacex’s falcon 9 falcon heavy as well as starship in the not too distant future. For more details on our rideshare program or to reserve your spot head over to our website at spacex.com, rideshare, now let’s take a look at falcon 9 out on the pad at the cape you’re. Looking at a live view of falcon 9, our 70 meter two stage liquid field launch vehicle today’s mission is the fifth flight for this particular booster. Its first four flights were all in 2020 and included our crew dragon demo 2 mission for nasa in may the anasys 2 mission in july, a starlink mission in october and most recently crs 21 in december. You can tell by the re entry soon at the bottom of the vehicle that this booster has flown before that bottom, two thirds of the vehicle is the first stage.

Its objective is to accelerate the vehicle through the earth’s atmosphere into space and then separate from the rest of the rocket from there. It will make its way back to earth and target a landing on a recovery vessel. Of course, i still love you, which is our drone ship in the atlantic ocean there it is on screen. On top of the first stage, is the black carbon fiber interstage. This is a composite material and it houses the larger nozzle of the second stage engine. Then, on top of that is the payload, then, on top of the interstage, is the falcon 9 second stage, which takes the payload to its eventual destination in orbit after the first stage separates about two and a half minutes into flight. The second stage will then carry the 143 spacecraft to orbit and in order to get the intended orbit today, we’ll need to light our second stage twice before deploying all of our payloads at the very top of the rocket you’ll notice, a large nose cone. This is called the fairing it’s a composite structure and protects the rocket from the forces of the scent and houses the payloads once the vehicle is outside of the earth’s atmosphere. The fairing separates to expose the satellites to space for today’s mission. Our fairing is brand new. A recovery vessel mischief there it is on screen will be attempting to recover the fairing halves from the water following landing. And, finally, the large truss structure next to falcon 9 is called the transporter erector.

We also refer to it as the te its job is to roll falcon 9 out to the launch pad, raise it to a vertical launch position and also route power, fluids and communication to both the rocket and the satellite. It will retract away from the rocket slightly at around the t: minus a four and a half minute mark providing clearance for falcon 9 to lift off the chief engineer held a technical pole at t minus one hour mark and the launch director held a propellant load And launch: go no go poll at the t minus 38 minute mark. If we do have a call to hold today’s launch, we do have a backup opportunity tomorrow at 10 a.m. Eastern we are currently red on weather for surface electrical fields. We’Ll keep a close eye on that as we count down, but weather is looking a little dicey for our current liftoff time. Falcon 9 has been loading propellants since the t minus the 35 minute mark the vehicle uses a refined form of kerosene, called rp1 for its fuel and super chilled liquid oxygen or lox as its oxidizer. Currently, rp1 is fully loaded on the second stage and nearly fully loaded on the first stage liquid auction is loading is currently underway as well. Helium load also began before the webcast went, live and will continue to top off until a minute and a half before launch. We use this helium to pressurize the tanks, as the propellant is pulled out by the engine pumps at in about a minute.

At the t, minus seven minute mark engine chilling will begin. This is where we allow a small amount of super chilled liquid auction to flow into the merlin engine, turbo pumps prior to the full flow of locks, to avoid any thermal shocks to the system and then a few minutes from now. Checkouts of the second stage thrust vector, control, actuators will be underway. This is also known as the engine wiggle test. We move the thrust chamber slightly to make sure that the guidance hardware is a go for flight. This happens on the first stage engines as well, and those happens just seconds before ignition. The vehicle is healthy and we are currently working no issues. The range is standing by to support again, the weather is red, but we’ll continue to monitor that all the way. Until t zero to see if we can get a chance for liftoff today, all systems continue to go for a liftoff at 9 40 a.m. Eastern time, Applause, eight just getting word from the team, so it’s official, we are scrubbing today for weather for surface electrical fields. We do have a backup opportunity tomorrow at 10 a.m.

https://www.youtube.com/watch?v=m04cf9PtxDg