TUESDAY, APRIL 10, 2007

Eleven years to the day since the Russian Proton rocket began flying under the marketing banner of International Launch Services, the heavy-duty booster overnight successfully heaved a 10,200-pound Canadian telecommunications satellite into Earth orbit.

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0850 GMT (4:50 a.m. EDT Mon.)

SUCCESS. ILS has announced that the Anik F3 has been deployed from the upper stage at the end of the successfully launch.

0330 GMT (11:30 p.m. EDT Mon.)

The Breeze M has carried out its the third and fourth firings of the night. In between the two burns, the emptied Additional Propellant Tank was jettisoned. This donut-shaped tank was shed to reduce the mass of the rocket for the remaining portion of the flight.

At present, the vehicle is in a highly inclined, highly elliptical orbit with an apogee at geosynchronous altitude around 22,000 miles. The forthcoming fifth and final final burn by the Breeze M about nine hours into flight will radically reduce the inclination to just 11 degrees north and south of the equator while also raising the orbit's low point to roughly 3,400 miles.

0105 GMT (9:05 p.m. EDT Mon.)

The second burn by the upper stage were performed as planned. The engine firing, lasting nearly 17 minutes, was designed to boost the rocket out of its initial parking orbit and into a higher intermediate orbit.

MONDAY, APRIL 9, 2007
2318 GMT (7:18 p.m. EDT)

T+plus 24 minutes, 45 seconds. The Breeze M motor's first burn was completed, officials now say. The vehicle has entered a coast period before the next firing occurs. The upper stage will perform a total of five burns to deploy Anik F3 into geosynchronous transfer orbit. Separation of the satellite to complete the launch is expected at T+plus 9 hours and 11 minutes, or 4:05 a.m. EDT (0805 GMT).

2309 GMT (7:09 p.m. EDT)

T+plus 15 minutes. ILS now confirms that the third stage engine cutoff occurred and the spent stage separated. The Breeze M upper stage and attached Anik F3 spacecraft were placed on a suborbital trajectory in preparation for the first of five planned firings by the upper stage to reach geosynchronous transfer orbit over the next nine hours.

The first Breeze M firing has begun.

2301 GMT (7:01 p.m. EDT)

T+plus 7 minutes. The second stage has been jettisoned, the Proton third stage ignited and the payload fairing enclosing the spacecraft atop the rocket separated.

2259 GMT (6:59 p.m. EDT)

T+plus 5 minutes. Coming up on burnout and separation of the second stage.

2257 GMT (6:57 p.m. EDT)

T+plus 3 minutes. Proton's second stage engines continue to fire. The rocket is 73 km in altitude and 160 km downrange from the launch pad.

2256 GMT (6:56 p.m. EDT)

T+plus 2 minutes, 15 seconds. The first stage engines have shut down and the spent stage has separated. The four second stage engines have ignited to continue boosting the vehicle to space.

2255 GMT (6:55 p.m. EDT)

T+plus 60 seconds. Now approaching the period of maximum dynamic pressure during the Proton's climb through the atmosphere.

2254 GMT (6:54 p.m. EDT)

T+plus 30 seconds. The vehicle has maneuvered to the proper heading. All six main engines are firing at full power.

2254 GMT (6:54 p.m. EDT)

LIFTOFF! Liftoff of the Proton rocket and Canadian Anik F3 spacecraft!

2253 GMT (6:53 p.m. EDT)

T-minus 1 minute.

2252 GMT (6:52 p.m. EDT)

T-minus 2 minutes. The countdown is being run by a master computer sequencer.

2249 GMT (6:49 p.m. EDT)

T-minus 5 minutes. The launch readiness of the Proton core vehicle and Breeze M upper stage is verified over the last minutes in the countdown.

2244 GMT (6:44 p.m. EDT)

T-minus 10 minutes. Weather conditions at Baikonur are acceptable for launch. The temperature is 45 degrees F with light and variable winds.

2242 GMT (6:42 p.m. EDT)

T-minus 12 minutes. This will be the 325th Proton rocket launch and the 40th under the management of International Launch Services.

2239 GMT (6:39 p.m. EDT)

T-minus 15 minutes. ILS is not reporting any problems in the countdown.

2233 GMT (6:33 p.m. EDT)

T-minus 21 minutes and counting down to the launch of the Canadian Anik F3 spacecraft aboard the year's first Proton rocket flight.

MONDAY, APRIL 9, 2007

The countdown is underway for today's flight of the Proton rocket carrying the Canadian Anik F3 communications satellite from the Baikonur Cosmodrome. Liftoff is scheduled for 2254 GMT (6:54 p.m. EDT).

The Proton first stage's six RD-275 engines will ignite at liftoff to push the 19-story rocket away from Earth on two million pounds of thrust. After first stage separation two minutes into flight, four engines aboard the second stage fire for three-and-a-half minutes before shutting down and jettisoning. The Proton's third stage then comes to life for its four-minute job, during which time the protective payload fairing shielding Anik will separate.

The Breeze M upper stage then takes over for a series of maneuvers lasting nine hours to reach geosynchronous transfer orbit. The 10,200-pound satellite will be delivered in an elliptical orbit stretching 22,200 miles at its highest point, 3,400 miles at its lowest and an inclination of 11 degrees to the equator.

The Anik F3 spacecraft, built by EADS Astrium, boosts itself into a circular geostationary orbit where Telesat Canada of Ottawa will operate the satellite. Equipped with a payload to provide C-, Ka- and Ku-band services over North America, the craft will be parked in an orbital slot at 118.7 degrees West longitude. Its planned service life is 15 years.

Today's liftoff is under the management by International Launch Services, the commercial marketing firm for Russian Proton rocket. It comes 11 years to the day since the first ILS Proton launch.

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