Successfully run at Mach 5 temperatures, validating for the first time the capability of the novel heat exchanger design to operate at hypersonic flight conditions for atmospheric and space access applications.

Four contenders are each offering different configurations for the U.S. Army’s Future Attack Reconnaissance Aircraft program. A fifth remains under wraps.

Off-the-shelf contenders emerge as rivals to a nearly decade-old centerline engine development program for the Army’s high-speed replacement for the UH-60.

A naval version has appeared for the Avic Harbin helicopter, which appears to be longer than Sikorsky’s H-60.

The lesson of getting the U.S. Air Force’s Combat Rescue Helicopter effort back on track is a back-to-basics approach to program management.