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Greased Lightning (GL-10) Flight Testing CampaignGreased Lightning (GL-10) is an aircraft configuration that combines the characteristics of a cruise efficient airplane with the ability to perform vertical takeoff and landing (VTOL). This aircraft has been designed, fabricated and flight tested at the small unmanned aerial system (UAS) scale. This technical memorandum will document the procedures and findings of the flight test experiments. The GL-10 design utilized two key technologies to enable this unique aircraft design; namely, distributed electric propulsion (DEP) and inexpensive closed loop controllers. These technologies enabled the flight of this inherently unstable aircraft. Overall it has been determined thru flight test that a design that leverages these new technologies can yield a useful VTOL cruise efficient aircraft.
Document ID
Acquisition Source
Langley Research Center
Document Type
Technical Memorandum (TM)
Fredericks, William J.
(NASA Langley Research Center Hampton, VA, United States)
McSwain, Robert G.
(NASA Langley Research Center Hampton, VA, United States)
Beaton, Brian F.
(NASA Langley Research Center Hampton, VA, United States)
Klassman, David W.
(NASA Langley Research Center Hampton, VA, United States)
Theodore, Colin R.
(NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 1, 2017
Publication Date
July 1, 2017
Subject Category
Aircraft Design, Testing And Performance
Report/Patent Number
Funding Number(s)
WBS: WBS 533127.
Distribution Limits
Work of the US Gov. Public Use Permitted.
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