Centaur – Spaceflight Now

Atlas 5 valve repair will delay Starliner’s first crewed mission to May 17 at the earliest

May 8, 2024 Will Robinson-Smith

United Launch Alliance (ULA) is set to roll its Atlas 5 rocket and the Starliner spacecraft back to the Vertical Integration Facility on Wednesday to begin working on the problematic valve. The new launch date is no earlier than Friday, May 17, at 6:16 p.m. EDT (2016 UTC).

ULA test-fires first Vulcan rocket at Cape Canaveral

June 7, 2023 Stephen Clark

United Launch Alliance’s first Vulcan Centaur rocket completed a critical test-firing of its Blue Origin-built BE-4 main engines Wednesday night, clearing one of two remaining technical hurdles before the launcher is cleared for its inaugural flight later this year.

ULA delays Vulcan test-firing to troubleshoot engine ignition system

May 26, 2023 Stephen Clark

United Launch Alliance called off a test-firing of the company’s first flight-rated Vulcan Centaur rocket at Cape Canaveral Thursday to troubleshoot a problem with the booster’s engine ignition system.

First Vulcan rocket rolls back to hangar for ‘adjustments’ prior to test-firing

May 16, 2023 Stephen Clark

United Launch Alliance’s first Vulcan rocket was filled with methane and liquid oxygen propellants at Cape Canaveral last week for a tanking test, but managers decided to move the rocket back inside a hangar for a few adjustments before proceeding with an engine test-firing.

Photos: ULA’s Atlas 5 rocket lifts off from Cape Canaveral

May 19, 2021 Stephen Clark

Carrying a sophisticated billion-dollar missile detection satellite for the U.S. military, a United Launch Alliance Atlas 5 rocket lifted off from Cape Canaveral on Tuesday with 1.6 million pounds of thrust from a Russian RD-180 main engine and twin solid rocket boosters.

Atlas 5 rocket launches infrared missile detection satellite for U.S. Space Force

May 18, 2021 Stephen Clark

An upgraded, cyber-hardened $1 billion satellite to support the U.S. military’s missile defense systems rode into orbit from Cape Canaveral Tuesday at the tip of a United Launch Alliance Atlas 5 rocket.

Problem during fueling preps forces Atlas 5 launch delay

May 17, 2021 Stephen Clark

United Launch Alliance called off a launch attempt Monday after hitting a snag during preparations to fill an Atlas 5 rocket with cryogenic propellants at Cape Canaveral, delaying the liftoff of a new U.S. Space Force infrared surveillance satellite until no earlier than Tuesday.

Live coverage: Atlas 5 launches with missile warning satellite for U.S. military

May 17, 2021 Stephen Clark

United Launch Alliance launched the U.S. military’s SBIRS GEO 5 early warning satellite into orbit aboard an Atlas 5 rocket from Cape Canaveral Space Force Station. A launch attempt Monday was scrubbed during fueling preps due to a faulty temperature sensor. Liftoff of ULA’s workhorse rocket, fitted with two strap-on solid-fueled boosters, occurred at 1:37 p.m. EDT (1737 GMT).

Atlas 5/SBIRS GEO 5 launch timeline

May 17, 2021 Stephen Clark

This is the launch timeline to be followed by the Atlas 5 rocket’s ascent into orbit from Cape Canaveral with the SBIRS GEO 5 satellite for U.S. military infrared reconnaissance.

Photos: Atlas 5 ready for liftoff with SBIRS GEO 5

May 16, 2021 Stephen Clark

These photos show a 194-foot-tall United Launch Alliance Atlas 5 rocket standing on pad 41 at Cape Canaveral Space Force Station in advance of a planned launch with the U.S. Space Force’s fifth SBIRS missile warning satellite.