Candrea Thomas/NASA Launch Commentator: Twelve... ten?.
Kennedy Launch Control:
BOS is "go" for main engine start.
Candrea Thomas/NASA Launch Commentator:
Six?five...four?three?two? one?and booster ignition. Liftoff of
space shuttle Discovery, taking the space station to full power for
full science.
Houston Launch Control:
This is Mission Control Houston.
Kennedy Launch Control:
Discovery roll program.
Lee Archambault/STS-119 Commander:
Roger roll Discovery.
Houston Launch Control:
Discovery's roll maneuver is complete. It is now in a heads-down
position on track for its flight to the International Space Station.
Discovery flying 365 mph, 1 1/2 miles in altitude, seven miles
downrange from the Kennedy Space Center. Discovery's engines
are throttling down as the orbiter passes through the area of
maximum pressure on the vehicle.
Kennedy Launch Control
Discovery go at throttle up.
Lee Archambault/STS-119 Commander
Discovery go at throttle up.
Houston Launch Control
Three main engines on board are throttling back up. Now one
minute, 12 seconds into the flight, Discovery flying at 1,800 mph,
10 miles in altitude and 11 1/2 miles downrange from the Kennedy
Space Center. At liftoff the fully fueled shuttle boosters and
external tank weighed 4 1/2 million pounds. The total thrust at
launch was 6,425,000 pounds. All systems continue to function
well. Three good main engines, three good power-generating fuel
cells and three good auxiliary power units for the hydraulic system.
We will now standby for burnout and separation of the solid rocket
boosters. Combined, the twin boosters provide 5.3 million pounds
of thrust to propel the orbiter toward space. Discovery now flying
3,600 mph, 32 miles in altitude, 43 miles downrange from the
Kennedy Space Center.