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The Mission




Rocket: Titan 4B (B-26)
Payload: Classified
Date: October 19, 2005
Period: 9 a.m. - 1 p.m. PDT (12-4 p.m. EDT; 1600-2000 GMT)
Site: SLC-4E, Vandenberg Air Force Base, Calif.
Broadcast: Intelsat Americas 6, Transponder 5, C-Band, 93° West

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Titan 4B launch timeline
SPACEFLIGHT NOW
Posted: October 16, 2005

T+0:00 Liftoff
The twin Solid Rocket Motor Upgrade (SRMU) boosters are ignited and the Titan 4B rocket launches from Space Launch Complex-4 East at Vandenberg Air Force Base, California.
T+2:13 Stage 1 Ignition
The Titan 4B rocket's core vehicle stage 1 engine -- the Aerojet LR87-AJ-11 -- is ignited. The liquid-propellant powerplant burns Aerozine-50 fuel and nitrogen tetroxide oxidizer.
T+2:28 SRMU Separation
Having consumed all their solid-propellant, the two Alliant Techsystems-built solid rocket boosters are jettisoned to fall into the Pacific Ocean.
T+3:30 Jettison Payload Fairing
The payload fairing buit by Boeing that protected the NRO spacecraft during atmospheric ascent is separated once it is no longer needed.
T+5:26 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+9:18 Stage 2 Shutdown
The liquid-fueled second stage engine completes its firing after reaching the desired altitude in space for deployment of the payload.
T+9:30 Spacecraft Separation
The classified National Reconnaissance Office satellite cargo is released into space from the second stage to complete the Titan 4B rocket's launch.

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