George Diller/GOES-P Launch Commentator: T minus 10
Nine
Eight
"go" for main engine start
Seven
Six
Five
Four
Three
Two
One
Zero
and liftoff of the Delta IV rocket with GOES-P, completing a new weather satellite
constellation, growing reliability for the weather forecaster.
Steve Agid/Launch Vehicle Telemetry Officer: Coming up 30 seconds,
mark 30 seconds into the flight.
Altitude now 2 nautical miles, velocity 1,834 feet per second,
downrange about a half a mile.
Chamber pressures beginning to decline.
Forty-seven seconds in, now passing Mach 1.
Vehicle's now going transonic. Passing 57 seconds, standing by for max Q.
One minute, one second into the flight, maximum dynamic pressure in the vehicle.
Chamber pressure continuing to hold good in the main engine.
Good engine control.