Spaceflight Now Home





The Mission




Rocket: Atlas 5 (AV-022)
Payload: SBIRS GEO-1
Date: May 7, 2011
Window: 2:10-2:50 p.m. EDT (1810-1850 GMT)
Site: SLC-41, Cape Canaveral, Florida
Feed: AMC 3, C-band, Transponder 16, 87° West

Mission Status Center

Photos: Launch gallery

Photos: Beach view

Photos: Press site view

Photos: On the pad

Photos: Rocket rollout

Photos: Satellite preps

Rocket configuration

Ascent events timeline

Ground track map

Our Atlas archive



NewsAlert



Sign up for our NewsAlert service and have the latest news in astronomy and space e-mailed direct to your desktop.

Enter your e-mail address:

Privacy note: your e-mail address will not be used for any other purpose.



Atlas/SBIRS launch timeline
SPACEFLIGHT NOW
Posted: May 3, 2011

T-00:02.7 Engine Start
The Russian-designed RD-180 main engine is ignited and undergoes checkout prior to launch.
T+00:01.1 Liftoff
The United Launch Alliance Atlas 5 vehicle, designated AV-022, lifts off and begins a vertical rise away from Complex 41 at Cape Canaveral Air Force Station, Florida.
T+01:30.6 Mach 1 and Max Q
The Atlas rocket achieves Mach 1 some 81 seconds into the flight, then passes through the region of maximum dynamic pressure at 91 seconds.
T+04:03.0 Main Engine Cutoff
The RD-180 main engine completes its firing after consuming its kerosene and liquid oxygen fuel supply in the Atlas first stage.
T+04:09.0 Stage Separation
The Common Core Booster first stage of the Atlas 5 rocket separates from the Centaur upper stage. Over the next few seconds, the Centaur engine liquid hydrogen and liquid oxygen systems are readied for ignition.
T+04:19.0 Centaur Ignition 1
The Centaur RL10 engine ignites for the longer of the two upper stage firings. This burn will inject the Centaur stage and SBIRS GEO 1 spacecraft into a parking orbit.
T+04:27.0 Nose Cone Jettison
The two-piece payload fairing that protected the SBIRS GEO 1 craft during the atmospheric ascent is separated to reveal the satellite to space.
T+15:31.9 Centaur Cutoff 1
The Centaur engine shuts down after arriving in a planned parking orbit. The vehicle enters a brief coast period lasting nearly 9 minutes before arriving at the required location in space for the second burn.
T+24:17.0 Centaur Ignition 2
The Centaur re-ignites over the equatorial Atlantic to accelerate the payload into geosynchronous transfer orbit from the parking achieved earlier in the launch sequence.
T+28:09.5 Centaur Cutoff 2
At the conclusion of its second firing, the Centaur will have delivered the SBIRS GEO 1 spacecraft into the targeted orbit with an apogee of 22,236 statute miles, perigee of 115 statute miles and inclination of 21.64 degrees.
T+43:19.5 Spacecraft Separation
The U.S. military's first Space Based Infrared System Geosynchronous spacecraft, or SBIRS GEO-1, is released into orbit from the Centaur upper stage to complete the AV-022 launch.

Data source: United Launch Alliance.

Final Shuttle Mission Patch

Free shipping to U.S. addresses!

The crew emblem for the final space shuttle mission is now available in our store. Get this piece of history!
 U.S. STORE
 WORLDWIDE STORE

STS-134 Patch

Free shipping to U.S. addresses!

The final planned flight of space shuttle Endeavour is symbolized in the official embroidered crew patch for STS-134. Available in our store!
 U.S. STORE
 WORLDWIDE STORE

Ares 1-X Patch
The official embroidered patch for the Ares 1-X rocket test flight, is available for purchase.
 U.S. STORE
 WORLDWIDE STORE

Apollo Collage
This beautiful one piece set features the Apollo program emblem surrounded by the individual mission logos.
 U.S. STORE
 WORLDWIDE STORE

Project Orion
The Orion crew exploration vehicle is NASA's first new human spacecraft developed since the space shuttle a quarter-century earlier. The capsule is one of the key elements of returning astronauts to the Moon.
 U.S. STORE


Fallen Heroes Patch Collection
The official patches from Apollo 1, the shuttle Challenger and Columbia crews are available in the store.
 U.S. STORE
 WORLDWIDE STORE


MISSION STATUS CENTER

INDEX | PLUS | NEWS ARCHIVE | LAUNCH SCHEDULE
ASTRONOMY NOW | STORE

ADVERTISE

© 2014 Spaceflight Now Inc.