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The Stopped Rotor Concept - A New Look at an Old Idea

Gerald E. Brown, Aviation 360 LLC
Vivek Ahuja, Research in Flight

https://doi.org/10.4050/F-0079-2023-17960

Abstract:
This paper reviews and reassesses the Stopped Rotor Concept. It briefly describes a number of historical Stopped Rotor experiments, discusses the problems they encountered, the limitations imposed by old technologies, and why they were not successful. It sheds some light on the rationale, during that time, for not pursuing further research in those design concepts. While it has been well understood for decades that a low disc-loading rotor is the most efficient vertical take-off and landing (VTOL) element, and high aspect ratio wings are the most efficient cruise elements, those experiments demonstrated how difficult it has been to combine those two efficient elements in a single aircraft. A new design is presented which revisits the Stopped Rotor Concept and shows that with modern technologies, materials, and analysis tools it is now possible to design and build an aircraft that uses low disc-loading rotor blades not only for efficient VTOL but also for efficient cruise.


The Stopped Rotor Concept - A New Look at an Old Idea

  • Presented at Forum 79
  • 18 pages
  • SKU # : F-0079-2023-17960
  • Advanced Vertical Flight

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The Stopped Rotor Concept - A New Look at an Old Idea

Authors / Details:
Gerald E. Brown, Aviation 360 LLC
Vivek Ahuja, Research in Flight