is stage. One continues. Nominal performance engines remain steady attitude first stage passing through the area of maximum dynamic pressure on the rocket 90 seconds into the light. This first stage burns for a little over three minutes. Three minutes 18 seconds until main engine cut off Music about 90 seconds to stage one burnout attitude nominal engine’s at 100 and steady t plus two minutes. All subsystems continue in nominal performance. Also, some sub systems are nominal uh we’ll, be ready to shift down to uh 80 on the engines at 170.. Startup slow throttle down throttling down at three minutes into the flight main engine cutoff coming soon throttle down to 55 percent main engine cutoff. We have miko and terry’s entering into a co stage. Fairing separation will occur about 30 seconds later, as we lose side of the vehicle now. Switching to animation some control, the firings on the inter stage of the rocket attitude nominal good separation, 20 seconds to stage two ignition all subsystems, nominal fairing separation, enter stage separation, confirm fairing separation and interstage stage. Two ignition stage, two ignition confirmed stage. Two is a solid rocket motor burns for about 2 minutes 44 seconds stage. Two will continue to burn for another, approximately two minutes: altitude: 138 kilometers uh mission time 300 seconds, velocity 4.8 kilometers per second altitude, 150 kilometers. All systems continue to perform nominally good calls. 5 minutes 15 seconds into today’s flight ht motor pressure, nominal attitude – nominal altitude is 170 kilometers, roughly one minute to stage two burnout all stage.

Two and gnc parameters continue to be nominal six minutes fifteen seconds into the flight uh coming up on stage two burnout of that solid rocket motor that’ll initiate a two minute coast period until uh second stage separation stage, two starting to tail off roughly 15 seconds to Burn out stage, two burnout attitude nominal stage: two burnout, good attitude: uh we’ll air we’re in a coast period now exposed after that uh fairing separation and will continue to carry the second stage with it. Until about nine minutes into the flight attitude. Nominal expected attitude control system, thruster firings received continuing on course, roughly one minute to payload separation, altitude, 185 kilometers velocity 7.5 kilometers per second. All systems continue to operate as expected, approximately 30 seconds to spacecraft separation attitude. Nominal systems continue to perform as expected attitude corrections, maintaining expectations. Lc gso, i just released red team to the pad that spacecraft separation confirmed nine minutes into today’s. Flight cygnus has separated from the second stage lc ace. That concludes our callouts copy, that ace okay, uh ng. 15 excellent job today let’s go ahead and wrap up through this post launch checklist and prop one can you report on status of pulse purging, pulse purging has just started copy that we’ll check 4 30. and gnc 1lc when you have uh the antarctic state factor to The cygnus poc email confirmed, give me a call back on step 431 copy and work from the wallops range control center in wallops island virginia some celebratory fist bumps as they successfully delivered cygnus into orbit a nine minute flight on top of antares from virginia space’s mid Atlantic regional spaceport into orbit cygnus now flying free, the ss katherine johnson in flight will make its uh one and a half day.

Uh journey uh just a little shy of two days uh to the international space station arriving in the wee hours uh early morning. On monday february 22nd, rotated and also disable your local launch enable button ops, one launch enable removed engine flight controllers in dulles, uh virginia northrop grumman’s mission operation center will take control of the cygnus and monitor its approach to the international space station over the next couple Of days, a solar array deployment coming in a couple of hours will uh be breaking before that, and we’ll provide a confirmation of that, via our blog and social media. Before we depart with you today for our coverage of the launch of northrop grumman’s, crs 15 mission to the international space station we’re, bringing on uh deputy manager of the international space station program, kenny todd on with us to provide some remarks kenny. Thank you for joining us today, hey gary good good morning, good to be with you kenny. This launch comes ahead of a crew rotation and, of course, in the near term, some evas from the perspective of the international space station program. What is the significance of this mission? Uh crs 15? Well, uh gary. I mean this uh. This particular mission, uh um has um about eight thousand pounds of of cargo coming to the space station and uh. You know roughly a third of it is going to be dedicated uh directly to utility utilization and science on board on board the station and so again that’s our that’s, our bread and butter that’s that’s.

What we’re up there to do is is uh really really do the utilization and science that that our commercial customers need the things that we need to learn in order to go further into our solar system, our human research and so we’ve uh we’ve got a lot Of this flight that’s dedicated uh to to that kind of activity, uh in addition to that, we’ve uh we’ve got a little over a third of it, that’s dedicated just to basic vehicle systems, maintenance hardware and some new, some new technology that we’re bringing on board. So again, as we as we look to go further further away from low earth orbit, the thing that we have to do is continue to learn. You know about the systems that we’re going to need and and the iss provides a great platform for that. So we are launching some some new hardware in the vehicle systems area that allow us to to uh demonstrate some of this technology. How were international space station operations? Your international space station operations for international space station operation um on the day that it arrives? Um we’ve got some some key science objectives that we want to get going in that first couple of days, um, so so the first two or three days after it gets there will will be heavily and and intensely focused on on the science that we need to Get up and running um then shortly after that, and merely you know, four or five days after that we’ll be heavy into doing a set of eva preps uh we’re.

At this point, planning on on going out to do an eva in the in you know, possibly as early as next weekend, uh we we’ve got a double double eda, planned, um and so uh we’ll we’ll get busy on that. As quick as we get, the cygnus uh let’s get science up and going that came up in cygnus and then we’ll we’ll be on on to doing evas a lot coming up here in the near term. Kenny todd. Thank you so much for uh joining us here. At the end of our launch coverage, thanks for having me gary, i appreciate it again. We had a successful launch of northrop grumman’s, crs 15 mission on time today, 12 36 and 49 seconds p.m. Eastern time you’re getting a live, look at the mission operations center in dulles virginia northrop grumman flight controllers, taking control of the vehicle and will monitor its approach to the international space station over the next near two days until it arrives in the early morning of february 22Nd monday morning, uh, robotic operators, suici and mike hopkins aboard the international space station will be poised at the controls of the canadarm2, the robotic arm of the station ready to capture it when it arrives monday morning, the uh cygnus is in orbit right now, but its Solar arrays are not deployed. We will be wrapping up our coverage and providing confirmation of that solar array deployment here in the next couple of hours, uh and that it is receiving power and well on its way to make that journey to the international space station.

Our coverage on monday morning will begin at 2 a.m. Central time, 3 a.m. Eastern uh to monitor the approach and capture of cygnus and the eight thousand pounds of cargo inside of the vehicle and we’ll also uh, be providing coverage of the installation process. Robotic operators on the ground will take control of the robotic arm and maneuver into position on the nadir side of the international space station. The unity module where it will remain for the next several months into may before it departs with trash and science on board. To be eventually burned up in the atmosphere from michigan control, houston and from all the teams that supported the launch that will wrap up our coverage of the crs 15 mission today, we’ll be with you again on monday morning.

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