Centaur

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

A United Launch Alliance (ULA) Atlas 5 N22 rocket with Boeing’s Starliner spacecraft on top as seen the day before its planned May 6 launch. A problematic valve in the Centaur upper stage of the rocket caused the mission to scrub two hours before liftoff. Image: Michael Cain/Spaceflight Now Boeing’s Starliner spacecraft is going to …

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Test-firing of ULA’s first Vulcan rocket on tap today

Watch our live coverage of the Flight Readiness Firing for United Launch Alliance’s first Vulcan Centaur rocket at Cape Canaveral Space Force Station. Follow us on Twitter. SFN Live United Launch Alliance’s first Vulcan Centaur rocket is back on its launch pad at Cape Canaveral for a critical test-firing of its Blue Origin-built BE-4 main engines …

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

United Launch Alliance’s Vulcan rocket rolls out to Space Launch Complex 41 at Cape Canaveral on May 11. Credit: United Launch Alliance 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 …

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

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. The 194-foot-tall (59-meter) Atlas 5 rocket lifted off at 1:37 p.m. EDT (1737 …

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

A United Launch Alliance Atlas 5 rocket blasts off with the U.S. military’s SBIRS GEO 5 satellite. Credit: Alex Polimeni / Spaceflight Now 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. …

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Problem during fueling preps forces Atlas 5 launch delay

The payload shroud of ULA’s Atlas 5 rocket, containing the SBIRS GEO 5 missile warning satellite. Credit: Stephen Clark/Spaceflight Now 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 …

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Photos: Atlas 5 ready for liftoff with SBIRS GEO 5

These photos show a 194-foot-tall (59-meter) 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. The Atlas 5 rocket is set for launch during a 40-minute window opening at 1:35 p.m. EDT …

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U.S. military warning sentinel attached to Atlas 5 rocket at Cape Canaveral

The U.S. Space Force’s fifth SBIRS GEO early warning satellite — encapsulated inside the Atlas 5 rocket’s payload shroud — arrives at the Vertical Integration Facility on May 7. Credit: United Launch Alliance United Launch Alliance crews at Cape Canaveral have topped off an Atlas 5 rocket for liftoff Monday with the U.S. military’s next …

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