The company tried to test the rocket's engine earlier in May, but it was pushed back due to an issue with the ignition system.
The company has had a bumpy ride in trying to see its rocket fly for the first time. The highly-anticipated debut of ULA’s Vulcan Centaur was originally. Two weeks before liftoff, however, a fiery explosion swept over the rocket’s test stand at NASA’s Marshall Space Flight Center in Alabama while engineers were pressurizing its upper stage.
Vulcan’s maiden flight had already been delayed several times, with ULA initially hoping to launch its rocket in 2020 and then again in 2022. The rocket’s first stage is powered by two BE-4 engines built by Blue Origin, which were deliveredThe fully expendable 202-foot-tall rocket is set to replace ULA’s Atlas V and Delta IV rockets, which have been in use for the past two decades. The Vulcan Centaur is designed to lift 27.2 metric tons to low Earth orbit and 6.
During its flight readiness test, the rocket won’t actually get off the ground. Instead, engineers will load up the Vulcan Centaur rocket with fuel and fire up its twin booster BE-4 engines. The point of the test is to go through launch countdown and procedures, sort of like a rehearsal for launch day to make sure everything goes according to plan.If it aces the test, Vulcan Centaur will be ready to fly for the first time.
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