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Falcon 9 Launch Timeline with SXM 8 – Spaceflight Now



SpaceX’s Falcon 9 rocket is set to take off from Cape Canaveral early Sunday. It headed east over the Atlantic Ocean to launch the SXM 8 radio satellite into orbit about 32 minutes later.

The 229-foot (70 m) rocket was ready for launch from Pad 40 at Cape Canaveral Space Force Station in Florida during an hour 59 minute launch at 12:26 a.m. EDT (0426 GMT) Sunday.

Atop the rocket is the SXM 8 radio broadcasting satellite, a spacecraft manufactured by Maxar Technologies in Palo Alto, Calif. and owned by SiriusXM.

After deploying from the top stage of the Falcon 9 rocket in an elliptical orbit, the SXM 8 spacecraft will use its onboard thrusters to propel itself into a spherical geostationary orbit more than 22,000 miles (nearly 36,000 kilometers) above the equator.

The SXM 8 from Maxar̵

7;s 1300 Series satellite bus will provide radio programming to SiriusXM subscribers across North America.

The Falcon 9’s first booster, set to load SXM 8, has two previous flights, both of which were Crew Dragon missions carrying astronauts to the International Space Station.

The timeline below shows the launch sequence for a Falcon 9 flight with SXM 8.

Source: SpaceX

T-0:00:00: Overhaul

After all nine of the rocket's Merlin engines passed automatic health checks,  The mounting clamp releases the Falcon 9 booster for lift from Complex 40.
After all nine of the rocket’s Merlin engines undergo automated health checks, A push-and-hold clamp releases the Falcon 9 booster for 39A liftoffs.

T+0:01:00 do 1

The Falcon 9 rocket reaches the speed of Mach 1, the speed of sound.
The Falcon 9 rocket reaches the speed of Mach 1, which is the speed of sound. Because nine Merlin 1D engines provide more than 1.7 million pounds of thrust.

T+0:01:12: Max Q

The Falcon 9 rocket reaches Max Q, the point where the aerodynamic pressure is maximum.
The Falcon 9 rocket reaches Max Q, the point where the aerodynamic pressure is maximum.

T+0:02:33: MECO

The Falcon 9's nine Merlin 1D engines shut down.
The Falcon 9’s nine Merlin 1D engines shut down.

T+0:02:36: Phase 1 Separation

The Falcon 9's first stage separates from the second after MECO.
The Falcon 9’s first stage separates from the second after MECO.

T+0:02:44: First stage second fire.

The second-stage Merlin 1D vacuum engine will ignite for approximately 6 minutes to allow the rocket and SES 9 to enter a preliminary parking orbit.
Merlin-Vacuum engine The second phase ignited five and a half minutes to bring the rocket and the Turksat 5A spacecraft into preliminary parking orbit.

T+0:03:23: Fairing Wharf

The fairing berth measures 5.2 meters (17.1 feet) in diameter as the Falcon 9 rocket rises into the dense atmosphere below. The 43-foot-tall fairing is made of two shell-like halves composed of carbon fiber with an aluminum honeycomb core.
The fairing berth measures 5.2 meters (17.1 feet) in diameter as the Falcon 9 rocket soars into the dense atmosphere below. The 43-foot-tall fairing is made of two shell-like parts. It consists of carbon fiber with a honeycomb aluminum core.

T+0:06:31: Stage 1 begins burning items.

A subsection of the first stage’s Merlin 1D engine starts burning items to slow down the landing. The final landing burn takes place before a touchdown.

T+0: 08: 12: SECO 1

The second stage of the Falcon 9 rocket shuts down after reaching an initial low-altitude orbit. The upper stage and SES 9 initiate the coastal phase, which is slated to take more than 18 minutes before Merlin's second stage vacuum engine ignites. fire
The second stage of the Falcon 9 rocket shuts down after reaching an initial low-altitude orbit. The upper stage and SXM 8 start off the coast, which is scheduled to take 18 minutes before the second stage of Merlin’s vacuum engine ignites.

T+0:08:40: Stage 1 landed.

Falcon 9’s First Booster Stage Experience SpaceX’s “Just Read the Instructions” Drone in the Atlantic Ocean

T+0:26:07: Second Stage Ignition

Falcon 9's second-stage Merlin engine restarts to propel the SES 9 communications satellite into a super-synchronous transfer orbit.
Falcon 9’s second-stage Merlin engine restarts to propel the SXM 8 communications satellite into an elliptical launch orbit.

T+0: 26: 51: SECO 2

The Merlin engine shut down after a short burn to keep the SES 10 satellite in orbit suitable for installation.
Merlin’s engines went off after a short burn to put the SXM 8 satellite in a proper elliptical orbit with an endpoint of approximately 12,000 miles (20,000 km).

T+0:31:42: SXM 8 Separation

The SES 9 satellite separates from the Falcon 9 rocket in orbit with a predicted peak of about 39,300 km (24,400 mi), a low of 290 km (180 mi) and an inclination of 28 degrees due to the decision to burn the stage. the second until almost all  So there is some uncertainty about the orbit parameters based on the exact performance of the launcher.
The SXM 8 satellite splits from the Falcon 9 rocket into an elliptical launch orbit. On the way to the perch in geostationary orbit

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