Blue Origin's BE-4 rocket Engine exploded during testing, causing significant damage and potential delays to the company's rocket launches, including those for its customer United Launch Alliance (ULA). CNBC reports: During a firing on June 30 at a West Texas facility of Jeff Bezos' space company, a BE-4 engine detonated about 10 seconds into the test, according to several people familiar with the matter. Those people described having seen video of a dramatic explosion that destroyed the engine and heavily damaged the test stand infrastructure. The engine that exploded was expected to finish testing in July. It was then scheduled to ship to Blue Origin's customer United Launch Alliance for use on ULA's second Vulcan rocket launch, those people said. A Blue Origin spokesperson, in a statement to CNBC on Tuesday, confirmed the company "ran into an issue while testing Vulcan's Flight Engine 3." "No personnel were injured and we are currently assessing root cause," Blue Origin said, adding "we already have proximate cause and are working on remedial actions." The company noted it "immediately" made its customer ULA aware of the incident. ULA is the rocket-building joint venture of Boeing and Lockheed Martin, which competes primarily with Elon Musk's SpaceX, especially going head-to-head over the most lucrative military launch contracts. Blue Origin also said it will be able to "continue testing" engines in West Texas. The company previously built two stands for the tests. "We will be able to meet our engine delivery commitments this year and stay ahead of our customer's launch needs," Blue Origin added. BE-4âs test failure threatens to further push back the already-delayed first Vulcan launch -- which was recently rescheduled to the fourth quarter of this year -- while Blue Origin examines the cause of the problem. Each Vulcan rocket uses a pair of BE-4 engines to launch. ULA waited anxiously for years to receive delivery of the first set. A month ago, ULA completed a key milestone in preparation for the first Vulcan launch, known as Cert-1, with a short static fire test of the rocket using the first pair of BE-4 flight engines. [...] At the same time that Blue Origin needs to get BE-4 working well and humming off the production line for its main customer, the company also needs the engines for its own reusable New Glenn rocket that's in development. While Vulcan uses two BE-4 engines, each New Glenn rocket requires seven BE-4 engines, meaning Blue Origin needs to produce dozens a year to support both rockets.

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