The Army is seeking new engine concepts to support its proposed Future Vertical Lift (FVL) family of aircraft, which is intended to dramatically outstrip the speed and range of existing platforms. A special notice posted Feb. 18 on the Federal Business Opportunities website calls for "proposals for the conceptual design and benefits analysis of an Adaptive Vertical Lift Engine (AVLE)," which would enable future aircraft to shift between vertical lift or hover conditions to high-speed forward flight while improving upon...