Results 261 to 270 of about 8,919,752 (327)
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Coaxial-Compound Helicopter Flight Control Design and High-Speed Handling Qualities Assessment
Journal of the American Helicopter Society, 2022To provide the government with independent control-system design, handling qualities analysis, and simulation research capabilities in support of Future Vertical Lift, the U.S.
T. Berger +4 more
semanticscholar +1 more source
Handling qualities of fixed-pitch, variable-speed multicopters for urban air mobility
Aeronautical Journal, 2021Optimisation-based control design techniques are applied to multicopters with variable-RPM rotors. The handling qualities and motor current requirements of a quadcopter, hexacopter and octocopter with equal gross weights (5,360N) and total disk areas ...
M. Bahr, M. McKay, R. Niemiec, F. Gandhi
semanticscholar +1 more source
Proceedings of the Vertical Flight Society 76th Annual Forum, 2020
Modern system identification techniques were used to identify a linear model based on a nonlinear simulation of a concept Urban Air Mobility quadcopter, and compared to a perturbation-based model.
R. Niemiec +3 more
semanticscholar +1 more source
Modern system identification techniques were used to identify a linear model based on a nonlinear simulation of a concept Urban Air Mobility quadcopter, and compared to a perturbation-based model.
R. Niemiec +3 more
semanticscholar +1 more source
AIAA AVIATION 2020 FORUM, 2020
The combination of modern advances in electric propulsion, fly-by-wire controls, autonomy, and increasing demand for short range air taxi operations, is currently producing an outburst of vehicle designs more diverse than ever before.
S. Schuet +6 more
semanticscholar +1 more source
The combination of modern advances in electric propulsion, fly-by-wire controls, autonomy, and increasing demand for short range air taxi operations, is currently producing an outburst of vehicle designs more diverse than ever before.
S. Schuet +6 more
semanticscholar +1 more source
Hover Handling Qualities of Fixed-Pitch, Variable-RPM Quadcopters with Increasing Rotor Diameter
Proceedings of the Vertical Flight Society 76th Annual Forum, 2020The handling qualities of quadcopters with fixed-pitch, variable-RPM rotors of several diameters are examined. Three aircraft sizes are considered, with rotor diameters of 1.2, 1.8, and 2.4 meters and gross weights of 136, 308, and 544 kg respectively.
Ariel Walter +4 more
semanticscholar +1 more source
Handling Qualities Assessment of Large Variable-RPM Multi-Rotor Aircraft for Urban Air Mobility
Proceedings of the Vertical Flight Society 76th Annual Forum, 2020Optimization-based control design techniques are applied to multicopters with variable-RPM rotors. The handling qualities and motor current requirements of a quadcopter, hexacopter, and octocopter with equal gross weights (1200 lb) and total disk areas
M. Bahr, F. Gandhi, M. McKay, R. Niemiec
semanticscholar +1 more source
Mission Task Element Development Process: An Approach to FAA Handling Qualities Certification
AIAA AVIATION 2020 FORUM, 2020Development of new air vehicles (e.g., personal air vehicles, urban taxis, etc.) have led to a proliferation of Vertical Takeoff and Landing (VTOL) vehicle concepts including electric vehicles, many of which are well funded and are in various stages of ...
D. Klyde +5 more
semanticscholar +1 more source
Development and Flight Validation of Proposed Unmanned Aerial System Handling Qualities Requirements
Journal of the American Helicopter Society, 2020Unmanned aerial systems, commonly known as drones, present new opportunities to perform autonomous tasks. Handling qualities requirements for manned vertical lift aircraft have been well defined and documented.
Christina M. Ivler +7 more
semanticscholar +1 more source
Handling-Qualities Perspective on Rotorcraft Load Alleviation Control
, 2020The objective of this research effort is to assess the impact of load alleviation control on the quantitative handling-qualities specifications (also known as predicted handling qualities) of both ...
Umberto Saetti +3 more
semanticscholar +1 more source
Handling Qualities Based Assessment of Scalability for Variable-RPM Electric Multi-Rotor Aircraft
Proceedings of the Vertical Flight Society 75th Annual Forum, 2019An examination is conducted into the effects of increasing rotor diameter on the handling qualities of a quadcopter with fixed-pitch, variable-RPM rotors. Five aircraft are simulated, with rotors ranging from 1 to 8 feet in diameter.
Ariel Walter +4 more
semanticscholar +1 more source