Results 131 to 140 of about 168,131 (170)
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Redistributed Allocation for Flight Control Failure on a Coaxial Helicopter
Proceedings of the Vertical Flight Society 77th Annual Forum, 2021An elastic blade flight dynamics model for a coaxial helicopter based on the Sikorsky X2 Technology™ Demonstrator is presented and validated with steady trim and frequency response flight test data.
M. McKay +4 more
semanticscholar +1 more source
Flight Test of scaled MTEs for VTOL Certification using an Ultralight Coaxial Helicopter
Proceedings of the Vertical Flight Society 78th Annual Forum, 2022New methods are currently being investigated to perform certification of future electric Vertical Take-Off and Landing (VTOL) aircraft. Due to the expected mission requirements, classical certification methods do not lend themselves to this type of ...
T. Jusko, Michael Jones, B. Grebing
semanticscholar +1 more source
Inflight Measurements of the Empennage of an Ultralight Coaxial Helicopter
Proceedings of the Vertical Flight Society 81st Annual Forum and Technology DisplayThe empennage of a helicopter is largely responsible for its stability in forward flight. Its performance is mainly determined by its aerodynamics. In this paper, the empennage of a CoAX 2D ultralight research helicopter is analyzed in detail. For this
L. Rottmann +3 more
semanticscholar +1 more source
Research on the measurement method of the torsion angle of the blade root of the coaxial helicopter
2024 8th International Conference on Electrical, Mechanical and Computer Engineering (ICEMCE)Aiming at the problem that the traditional torsion angle calculation method does not consider the influence of non-coplanar marking points caused by blade waving during high-speed rotor rotation, which makes the measurement results have large errors, and
Yu Lei, Wen Xie
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Deep Neural Network for Parameter Optimization of Coaxial-Rotor Helicopter
International Conference on Mechanical and Aerospace EngineeringA coaxial contra-rotating rotor helicopter has a higher payload capacity and superior high-speed stability compared to a single-rotor helicopter. However, the aerodynamic interactions between the two rotors are highly complex, resulting in a strong ...
Rio Kinoshi, Kenji Uchiyama, Kai Masuda
semanticscholar +1 more source
IEEE Transactions on Aerospace and Electronic Systems
The control complexity of coaxial compound helicopters (CCH) increases pilot workload and safety risks during aggressive maneuvers, necessitating an envelope protection system for safer operations.
Jinxi Lang, Zhong Wang, Yan Li
semanticscholar +1 more source
The control complexity of coaxial compound helicopters (CCH) increases pilot workload and safety risks during aggressive maneuvers, necessitating an envelope protection system for safer operations.
Jinxi Lang, Zhong Wang, Yan Li
semanticscholar +1 more source
Flight Dynamics of a Coaxial Compound Helicopter with Rotor-on-Rotor Interactional Aerodynamics
Journal of the American Helicopter SocietyThis paper focuses on the integration of a generalized rotor-on-rotor interactional aerodynamics model in state-variable form within a flight dynamics simulation and on its subsequent linearization and linear model analysis.
Dogyu Jun +3 more
semanticscholar +1 more source
IEEE Aerospace Conference
The success of the Ingenuity program has shown that aerial vehicles are key enablers of future exploration on Mars. As a technology demonstration, Ingenuity had limited dedicated science capabilities, with internal flight sensors and just two cameras ...
Sara A. Langberg +5 more
semanticscholar +1 more source
The success of the Ingenuity program has shown that aerial vehicles are key enablers of future exploration on Mars. As a technology demonstration, Ingenuity had limited dedicated science capabilities, with internal flight sensors and just two cameras ...
Sara A. Langberg +5 more
semanticscholar +1 more source
Post-Failure Control Reconfiguration on a High-Speed Lift-Offset Coaxial Helicopter
Proceedings of the Vertical Flight Society 76th Annual Forum, 2020An elastic blade trim model of a coaxial-pusher helicopter with aerodynamic interference between the rotors is described and validated against existing experimental data for coaxial rotor systems and helicopters.
M. McKay, F. Gandhi, Praneet Vayalali
semanticscholar +1 more source
Robust Control and Flight Test of a Coaxial Helicopter UAV
AIAA SCITECH 2023 Forum, 2023Hoijo Jeaong, J. Suk, Seungkeun Kim
semanticscholar +1 more source