Results 61 to 70 of about 3,036 (184)
AerospaceTiltrotors permit aircrafts to operate vertically with lift, yet convert to ordinary forward flight with thrust. The challenge is to design a tiltrotor blade yielding maximum lift and thrust that converts smoothly without losing integrity or efficiency ...
Zhiyuan Hu +5 more
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Dynamic thrust of the propeller in oblique flows in continuous conversion mode of tiltrotor
Advances in AerodynamicsTiltrotor exhibits a conversion mode with strong nonlinear aerodynamic characteristics. The thrust characteristics of propellers are one of the crucial factors determining the performance of tiltrotor with electric propulsion systems in the conversion ...
Mengtian Wang, Tai Jin, Yao Zheng
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Wind Tunnel Investigation of Transient Propeller Loads for Non-Axial Inflow Conditions
AerospaceRecent developments in electrical Vertical Take-off and Landing (eVTOL) vehicles show the need for a better understanding of transient aero-mechanical propeller loads for non-axial inflow conditions.
Catharina Moreira +2 more
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An Innovative Control Allocation Framework for a Novel Tiltrotor Aircraft
IEEE Access, 2020 Control allocation is still a challenge for tiltrotor aircraft due to effectors' redundancy, dramatic nonlinearities and cross-coupling. Besides this, the external disturbance caused by the unique configuration of tiltrotor such as larger wing area and ...
Yifan Xu, Qian Zhang, Zelong Yu
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Aerodynamic Shape Optimisation of a Proprotor and Its Validation by Means of CFD and Experiments [PDF]
, 2015 The aerodynamic shape design of a proprotor for a tiltrotor aircraft is a very complex and demanding task because it has to combine good hovering capabilities with high propeller efficiency.
Droandi, Giovanni, Gibertini, Giuseppe
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Aerodynamic Research on the Wing Design of a 3000 kg Hexa Tiltrotor eVTOL
Engineering ProceedingsThis paper describes a design method for 3000 kg hexa tiltrotor eVTOL wings. According to this design method, this paper designs and optimizes the wing area and incidence angle using CFD technology, provides the optimal wing design scheme, and estimates ...
Yafei Zheng, Wei Qiao, Xinlei Wang
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Civil tiltrotor missions and applications. Phase 2: The commercial passenger market [PDF]
The commercial passenger market for the civil tiltrotor was examined in phase 2. A market responsive commercial tiltrotor was found to be technically feasible, and a significant worldwide market potential was found to exist for such an aircraft ...
Alexander, H. +6 more
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Estimation Method for Basic Parameters of High-Speed Vertical Take-Off and Landing Aircraft
AerospaceThe research aims to propose a basic parameter estimation method for high-speed vertical take-off and landing (HSVTOL) aircraft, balancing rotor and fixed-wing mode requirements.
Yu Wang, Qihang Li, Pan Li
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CFD Study of an Annular-Ducted Fan Lift System for VTOL Aircraft
Aerospace, 2015 The present study aimed at assessing a novel annular-ducted fan lift system for VTOL aircraft through computational fluid dynamics (CFD) simulations. The power and lift efficiency of the lift fan system in hover mode, the lift and drag in transition mode,
Yun Jiang, Bo Zhang, Tao Huang
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Aircraft technology opportunities for the 21st Century [PDF]
New aircraft technologies are presented that have the potential to expand the air transportation system and reduce congestion through new operating capabilities, and at the same time provide greater levels of safety and environmental compatibility.
Albers, James A., Zuk, John
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