for its intended purpose as a Lunar vehicle descent stage main propulsion system as it offers greater control for soft landings. The engine uses hydrogen and oxygen propellants in a dual-expander combustion cycle, similar to the more typical expander cycle used by the RL-10 and others, which in theory offers better performance and allows each pump to run at independent flow rates. Blue Origin plans to use additive manufacturing technology to produce the combustion chamber of the engine, which would allow them to more cheaply construct the complex cooling channels required to keep the engine from melting and to produce the hot gasses that will power the pumps. Pusher Escape Motor Blue Origin partnered with Aerojet Rocketdyne to develop a pusher launch escape system for the New Shepard suborbital Crew Capsule. Aerojet Rocketdyne provides the Crew Capsule Escape Solid Rocket Motor (CCE SRM) while the thrust vector control system that steers the capsule during an abort is designed and manufactured by Blue Origin. In late 2012, Blue Origin performed a pad abort test of the escape system on a full-scale suborbital capsule. Four years later in 2016, the escape system was successfully tested in-flight at the point of highest dynamic pressure as the vehicle reached transonic velocity. In September of 2022, The abort system was triggered for real after the BE-3 engine on the booster failed during the NS-23 mission, leading to a launch abort. The system worked flawlessly. Facilities Blue Origin has a development facility near Seattle, Washington, a facility in Reston, Virginia and a privately owned spaceport in West Texas. Blue Origin's Reston office hosts the company's “Center of Excellence” in addition to their “Advanced Development Program, New Glenn launch system, new space infrastructure product development, and the company’s Enterprise Technology team”. Blue Origin has continued to expand its Seattle-area office and rocket production facilities in 2016 – purchasing an adjacent -building – and 2017, with permits filed to build a new warehouse complex and an additional of office space. The company's established a new headquarters and R&D facility, dubbed the O’Neill Building, in Kent, Washington, on June 6, 2020. Blue Origin manufactures rocket engines, launch vehicles, and space capsules in Washington. Its largest engineBE-4will be produced at a new manufacturing facility in Huntsville, Alabama, which was first announced in 2017 and opened in February 2020. In 2017, Blue Origin established a manufacturing facility for launch vehicles in