NTRS - NASA Technical Reports Server

Back to Results
A Method for Designing Conforming Folding PropellersAs the aviation vehicle design environment expands due to the in flux of new technologies, new methods of conceptual design and modeling are required in order to meet the customer's needs. In the case of distributed electric propulsion (DEP), the use of high-lift propellers upstream of the wing leading edge augments lift at low speeds enabling smaller wings with sufficient takeoff and landing performance. During cruise, however, these devices would normally contribute significant drag if left in a fixed or windmilling arrangement. Therefore, a design that stows the propeller blades is desirable. In this paper, we present a method for designing folding-blade configurations that conform to the nacelle surface when stowed. These folded designs maintain performance nearly identical to their straight, non-folding blade counterparts.
Document ID
Acquisition Source
Langley Research Center
Document Type
Conference Paper
Litherland, Brandon L.
(NASA Langley Research Center Hampton, VA, United States)
Patterson, Michael D.
(NASA Langley Research Center Hampton, VA, United States)
Derlaga, Joseph M.
(NASA Langley Research Center Hampton, VA, United States)
Borer, Nicholas K.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
July 11, 2017
Publication Date
June 5, 2017
Subject Category
Aircraft Design, Testing And Performance
Report/Patent Number
Meeting Information
Meeting: AIAA Aviation Technology, Integration, and Operations Conference (AVIATION 2017)
Location: Denver, CO
Country: United States
Start Date: June 5, 2017
End Date: June 9, 2017
Sponsors: American Inst. of Aeronautics and Astronautics
Funding Number(s)
WBS: WBS 107210.02.06.07
Distribution Limits
Work of the US Gov. Public Use Permitted.
No Preview Available