Application of Regenerative Engines to Projected Air Force Missions

Payload and time-on-station performance of long endurance aircraft is shown for aircraft equipped with conventional and regenerative turboprop engines. Incorporation of laminar flow control on the airframe and addition of regeneration to helicopter engines is discussed; these two design considerations appreciably improve performance. Also, for helicopter missions in excess of approximately 2 hr duration, improvement in performance can be obtained by addition of regeneration process to the turboshaft engine cycle.