* Astronomy

Blobrana · L

RE: NAVSTAR launch

Blobrana · L

T minus 30 seconds.
The launch ignition sequence will begin at T-minus 2 seconds when a Boeing engineer triggers the engine start switch. The process begins with ignition of the two vernier engines and first stage main engine start. The three ground-lit solid rocket motors then light at T-0 for lift-off.

Blobrana · L

T minus 1 minutes
LOX topping to 100 percent is underway.

Blobrana · L

At T minus 1 minute, 45 seconds. The launch pad water suppression system will be activated.

Blobrana · L

T-minus 4 minutes and counting!

Blobrana · L

T minus 5 minutes
No problems were reported.

Blobrana · L

T minus 7 minutes
At T minus 2 minutes. The first stage liquid oxygen vents will be closed so the LOX tank can be pressurized for launch.

Blobrana · L

T minus 10 minutes
All systems remain "go."

"The launch team is ready to enter Terminal Count"

The Delta 2 rocket's second stage hydraulic pump has gone to internal power after its pressures were verified acceptable.
At T minus 2 minutes, 45 seconds the launch vehicle ordnance will be armed.

Blobrana · L

All systems remain "go."
The countdown has entered the final planned hold point for today's launch.

At T-minus 3 minutes, 45 seconds. The Delta 2 rocket's systems will transfer to internal power for launch. And the launch pad water system will be enabled.

Blobrana · L

T minus 10 minutes
The satellite has successfully transitioned to internal battery power for launch.