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Numerical Investigation of Multi-Rotor ConfigurationsThe development of a conservative, parallel blade-element rotor model and its implementation into an adaptive Cartesian method is briefly reviewed. The model is first validated and then applied in edgewise forward flight for a variety of configurations. Validation studies comparing torque required for an isolated rotor match XV-15 wind tunnel trends well. Simulations of a simple quadrotor in “×” and “+” configurations are performed, demonstrating how the trailing rotor(s) lose thrust because of unfavorable aerodynamic interactions with the forward rotor(s), while power required remains near constant. A modified “+1” configuration is also examined, where the lateral rotors are brought inboard by 25%. This configuration showed a further 2% performance improvement over the “+” arrangement. The final paper will also include validation of a tandem rotor configuration with wind tunnel data as well as results and analysis of unsteady quadcopter simulations. In addition, a 4th configuration (× will be analyzed.




Document ID
20190028754
Acquisition Source
Ames Research Center
Document Type
Conference Paper
Authors
Chiew, Jonathan J.
(Science and Technology Corp. Moffett Field, CA, United States)
Aftosmis, Michael J.
(NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 6, 2019
Publication Date
June 25, 2018
Subject Category
Aircraft Design, Testing And Performance
Numerical Analysis
Report/Patent Number
ARC-E-DAA-TN49672
Meeting Information
Meeting: AIAA Aviation 2018
Location: Atlanta, GA
Country: United States
Start Date: June 25, 2018
End Date: June 29, 2018
Sponsors: American Institute of Aeronautics and Astronautics (AIAA)
Funding Number(s)
CONTRACT_GRANT: NNA16BD60C
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
Multirotor
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