XCOR engineers have successfully and repeatedly pumped liquid oxygen (LOX) at flow rates required to supply the Lynx suborbital vehicle main engines.

Combined with earlier demonstrated kerosene pumps and fully characterised engines, XCOR is now poised for main propulsion integration into the Lynx flight weight fuselage.

XCOR’s family of rocket piston pumps and engines now includes and is suitable for: kerosene, LOX, liquid hydrogen (LH2), and liquid methane.

These piston pumps are a critical component for safe, cost-effective, sustainable, reliable and highly reusable rocket engines for XCOR’s Lynx and other launchers including upper stage liquid hydrogen engines suitable for the Atlas V, Delta IV, and the planned NASA Space Launch System (SLS).

“For propulsion from 50 to 75,000 lbf thrust, XCOR’s proprietary combined thermodynamic cycle for piston pumps is ideal,” said XCOR CEO Jeff Greason.

“Unlike a turbo pump used in traditional rocket engines, the development cost of a piston pump is much lower and the useful range of thrust is much higher without modification.”

said XCOR CEO Jeff Greason.

“Manufacturability is easier, and reliability is considerably higher. The maintenance cycle is closer to that of an automotive engine rather than ‘disassemble and inspect after every flight’ required with conventional turbo fed systems.”

XCOR chief engineer Dan DeLong said, “Our pumps are fabricated using readily available automotive manufacturing techniques developed over the past 120 years.”

“XCOR developed internally the pump that eventually went on the X-Racer which was the first designed and optimized for low manufacturing cost.”

“This latest generation is almost 20 times more powerful than the X-Racer pump, but it’s only twice the weight. After more than ten years work, I think we’re getting good at this.”

added XCOR chief engineer Dan DeLong.

Andrew Nelson, XCOR Chief Operating Officer, said, “The fielding of the LOX pump is a major milestone for XCOR, the Lynx, our wet lease customers and our engine customers.”

“I can’t wait to see it powering our engines later this summer!”