| T+0:00:00 |
Liftoff |
| The twin Solid Rocket Motor Upgrade (SRMU) boosters are ignited and the Titan 4B rocket launches from Complex 40 at Cape Canaveral Air Force Station, Florida. |
|
| T+0:00:07 |
Roll Program |
| Rocket beings a roll maneuver to the flight azimuth of 93 degrees for the travel downrange from launch site. |
|
| T+0:02:11 |
Stage 1 Ignition |
| The Titan 4B rocket's core vehicle stage 1 engine package -- the Aerojet LR87-AJ-11 -- is ignited. The liquid-propellant powerplant burns Aerozine-50 fuel and nitrogen tetroxide oxidizer. |
|
| T+0:02:27 |
SRMU Separation |
| Having consumed all their solid-propellant, the two Alliant Techsystems-built solid rocket boosters are jettisoned to fall into the Atlantic Ocean. |
|
| T+0:03:36 |
Jettison Payload Fairing |
| The tri-sector payload fairing buit by Boeing that protected the Milstar satellite during launch is separated once heating levels drop to predetermined limits. |
|
| T+0:05:25 |
Staging of Titan Core |
| The first stage engine shuts down and the second stage Aerojet LR91-AJ-11 engine is ignited. The spent first stage is jettisoned from the rest of the space-bound Titan 4B rocket one second after the second stage is started. |
|
| T+0:09:15 |
Stage 2 Shutdown |
| The liquid-fueled second stage engine completes its firing and begins a momentary coast period before deployment of the upper stage and Milstar payload. |
|
| T+0:09:23 |
Stage 2/Centaur Separation |
| The Lockheed Martin-built Centaur upper stage is released from the Titan rocket's core vehicle, which has completed its role in the launch. |
|
| T+0:09:44 |
Centaur Burn 1 |
| The liquid-fueled Centaur stage is ignited for the first of three firings needed to deliver the Milstar satellite into the desired geostationary orbit. |
|
| T+0:11:44 |
Centaur Cutoff 1 |
| The Centaur completes its first burn to achieve a stable low-Earth orbit with the attached Milstar satellite. |
|
| T+1:05:02 |
Centaur Burn 2 |
| After quiet coast period through space, the Centaur stage is restarted in the first of a two-step process to propel Milstar in geostationary orbit. |
|
| T+1:10:16 |
Centaur Cutoff 2 |
| The Centaur engines are shut down following the firing that should raise one side of the orbit to geostationary altitude of 22,300 miles. |
|
| T+6:23:05 |
Centaur Burn 3 |
| Following a lengthy coast to the high point of its orbit -- around geostationary altitude -- the Centaur engines are again reignited to circularize the orbit by raising the low end of the orbit. This will deliver Milstar into a geostationary orbit 22,300 miles above the planet. |
|
| T+6:25:17 |
Centaur Cutoff 3 |
| Shut down of the Centaur engines occur to complete the powered phase of this launch. The stage now prepares to release the Milstar satellite. Centaur will later perform a collision avoidance maneuver, propellant blowdown and hydrazine depletion after spacecraft separation. |
|
| T+6:35:30 |
Spacecraft Separation |
| The Milstar 2-F3 secure military communications satellite is deployed into space from the Centaur upper stage to complete the Titan B-38 launch. |
