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The Northrop Grumman XRQ-73 SHEPARD (Series Hybrid Electric Propulsion AiRcraft Demonstration) is an hybrid-electric Group 3 unmanned aerial vehicle (weighting about 1,250 lb (570 kg)) developed by Northrop Grumman. [1] [2]
Northrop Grumman XRQ-73 SHEPARD; S. Sea Ferret This page was last edited on 22 October 2017, at 10:57 (UTC). ...
Data from FAA Type Certificate, The Incomplete Guide to Airfoil Usage, Pilot's Operating Handbook and Pilot Friend General characteristics Crew: one Capacity: three passengers Length: 28 ft 8 in (8.74 m) Wingspan: 36 ft 10 in (11.23 m) Height: 10 ft 4 in (3.15 m) Wing area: 184 sq ft (17.1 m 2) Airfoil: NACA 63A415 Empty weight: 2,569 lb (1,165 kg) Gross weight: 3,800 lb (1,724 kg) Powerplant ...
Northrop Grumman XRQ-73 SHEPARD; Northrop Grumman Switchblade; T. Northrop Grumman Tern; X. Northrop Grumman X-47A Pegasus; Northrop Grumman X-47B
where is propulsive efficiency (typically 0.65 for wooden propellers, 0.75 metal fixed pitch and up to 0.85 for constant-speed propellers), hp is the engine's shaft horsepower, and is true airspeed in feet per second, weight is in lbs.
The Boeing Truss-Braced Wing subsonic concept was planned with hybrid electric propulsion. [1] The Diamond DA36 E-Star first flew on 8 June 2011, the first flight of a series hybrid powertrain, reducing fuel consumption and emissions by up to 25%, a technology scalable to a 100-seater airliner. [2]
Northrop Grumman DARPA, USN 2003 Unmanned combat air vehicle (UCAV) [60] Naval use. X-47B: Northrop Grumman DARPA, USN 2011 UCAV Naval use. X-47C: Northrop Grumman USAF Manned bomber Proposal for a new-generation strategic bomber. Design only. X-48: Boeing NASA 2007 Blended Wing Body (BWB) [61] X-49 SpeedHawk: Piasecki: US Army 2007
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