To: Ok2Launch who wrote (5150 ) 6/10/1999 10:19:00 AM From: Ira Player Respond to of 29987
Thursday, June 10, 1999 Update for 10:08 a.m. EDT T+plus 20 minutes. The Delta 2 rocket's second stage carrying the four Globalstar spacecraft continues its coast period. Officials report there are no problems. -------------------------------------------------------------------------------- Update for 10:00 a.m. EDT T+plus 11 minutes, 30 seconds. Second stage engine has shut down following its first planned firing. The stage with the four Globalstar satellites attached are now in a preliminary parking orbit and will coast for the next 50 minutes. The stage's engine will be restarted southwest of Australia as the vehicle reaches the apogee of the orbit. -------------------------------------------------------------------------------- Update for 9:56 a.m. EDT T+plus 8 minutes. A very smooth flight continues. The official Range liftoff time today was 9:48:43.446 a.m. EDT. -------------------------------------------------------------------------------- Update for 9:53 a.m. EDT T+plus 5 minutes. The Delta rocket's first stage has done its job during the first 4 1/2 minutes of flight this morning. Moments ago the first stage main engine cut off and the first and second stages separated. Also, the payload fairing was jettisoned. The second stage has ignited for the first of its four burns expected during this launch. The first two burns will deliver the Globalstar satellites into their planned orbits, the other two firings of the stage will be made to maneuver itself away from the satellites, then deplete the remaining onboard fuel. -------------------------------------------------------------------------------- Update for 9:50 a.m. EDT T+plus 2 minutes. The Delta 2 rocket continues its steady climb toward space this morning. No problems have been reported. Just over a minute into flight, the four solid rocket motors attached to the rocket's first stage burned out and were jettisoned. Delta is now being powered entirely on the liquid-fueled first stage main engine and the twin vernier steering jets. -------------------------------------------------------------------------------- Update for 9:48:43 a.m. EDT Liftoff. Liftoff of the Boeing Delta 2 rocket on a mission to complete the first half of the Globalstar satellite constellation. The vehicle has cleared the tower. -------------------------------------------------------------------------------- Update for 9:48:13 a.m. EDT T-minus 30 seconds. Hydraulics and electronics reported go. 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 four solid rocket motors then light at T-0 for liftoff. -------------------------------------------------------------------------------- Update for 9:47:43 a.m. EDT T-minus 1 minute. The Range has issued its final clearance to proceed with launch; second stage hydraulic pump pressures have been verified acceptable and the pump has gone to internal power. -------------------------------------------------------------------------------- Update for 9:47:13 a.m. EDT T-minus 1 minute, 30 seconds. The Boeing Delta 2 rocket is less than 90 seconds away from releasing 483,000 pounds of thrust to carry four Globalstar satellites into low-Earth orbit. Deployment of the spacecraft will occur in two steps. The two satellites mounted on the upper portion of the dispenser will separated 69 minutes, 10 seconds into flight. The lower pair will come off 73 minutes, 20 seconds after launch. In the countdown: Liquid oxygen topping to 100 percent; data charts going to high speed; second stage hydraulic pump to external power.