The first rocket engine BE-4 was created by the United Launch Alliance.

The United Launch Alliance announced on Twitter that he had received from the first Blue Origin rocket engine BE-4, designed to replace the Russian RD-180.

The Assembly is not serial, it will be used for testing together with a carrier, a spokesman for Blue Origin portal Space News.

The @blueorigin #BE4 engine for #VulcanCentaur arrived at our Decatur, AL factory. ULA’s next-gen rocket is on track for launch in 2021! #CountdowntoVulcan

— ULA (@ulalaunch) July 1, 2020

The company plans to put a second BE-4 to the end of July.

The Russian RD-180 engines be equipped with rockets family Atlas. To replace them creating media Vulcan, it is assumed that the power plant VE-4 will work on the first stage.

According to analysts, the Atlas is used for “mission-critical space launches carried out in the national security interests of the United States.

The magazine the National Interest wrote that the law obliges the U.S. air force to abandon the use of the RD-180.