The Global Hypersonic Race

... riding a solid-fuel rocket booster, under development by Lockheed Martin and Raytheon, is planned as an equivalent to Russia’s Avangard. The Boeing Hypersonic Air-Breathing Weapon Concept (HAWC) will have a combined-cycle engine (the turbine will accelerate ... ... 2, after which the scramjet will further propel it to hypersonic speeds). According to some reports , the vehicle may be reusable. Northrop Grumman Corporation is working to design the combined-cycle Advanced Full Range Engine (AFRE) for HAWC under ...