AFRL Gives Seal of Approval to British Air-breathing Engine Design

The U.S. Air Force Research Laboratory (AFRL) has answered with a qualified "yes" the question of whether a British company's revolutionary air-breathing rocket engine, designed for a vertical-takeoff vehicle climbing to orbit with a single stage, holds promise. The post AFRL Gives Seal of Approval to British Air-breathing Engine Design appeared first on SpaceNews.com.