Skylon's SABRE engine concept passes US Air Force feasibilty test [feedly]

http://www.gizmag.com/sabre-engine-afrl-feasibility-study/37092/

Reaction Engines' Skylon reusable spaceplane project has been given a boost, with analysis by the United States Air Force Research Laboratory (AFRL) confirming the feasibility of the SABRE engine cycle concept that lies at its heart. .. Continue Reading SABRE engine concept passes US Air Force feasibilty test