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Proceedings of the Vertical Flight Society 80th Annual Forum
A blade-tip-propeller driven rotor consists of small electric motors and propellers attached to the rotor blade tip to spin the main rotor. This study address a propeller driven shortcoming that was identified in previous research: a high required ...
Robert Brown, Inderjit Chopra
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A blade-tip-propeller driven rotor consists of small electric motors and propellers attached to the rotor blade tip to spin the main rotor. This study address a propeller driven shortcoming that was identified in previous research: a high required ...
Robert Brown, Inderjit Chopra
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Aerodynamics of a Spinning Sphere
The Journal of the Royal Aeronautical Society, 1928The full equations of motion for the flow of a viscous fluid have proved too complicated for any general solution to be obtained. It is to be doubted if, in. the near future, the problem of fluid motion will be solved in a general manner, although solutions for a few special cases may be found.
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, 2011
A computational study performed for a canard guided spin stabilized projectile using finite volume TVD schemes is described in this paper. Computational Fluid Dynamics (CFD) modeling and analysis of the spinning projectile with fixed canard are conducted
X. Ji, Hai Wang, S. Zeng, C. Jia
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A computational study performed for a canard guided spin stabilized projectile using finite volume TVD schemes is described in this paper. Computational Fluid Dynamics (CFD) modeling and analysis of the spinning projectile with fixed canard are conducted
X. Ji, Hai Wang, S. Zeng, C. Jia
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Frequency Topology Optimization of Fan Blade Considering Stress Stiffening and Spin Softening
Volume 12D: Turbomachinery — Multidisciplinary Design Approaches, Optimization, and Uncertainty Quantification; Radial Turbomachinery Aerodynamics; Unsteady Flows in TurbomachineryFan blades are prone to failures due to dynamic loads and their optimal design ensures the stability of aircraft engines. Compared with the shape and parameter optimization, topology optimization design has a larger design space and frequency ...
Shenli Xu +3 more
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Effect of transition on the aerodynamic characteristics of a spinning cone
Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, 2017In order to study the effect of transition on the aerodynamic characteristics of a pointed cone at small angles of attack in supersonic flows, the [Formula: see text] transition model, γ transition model, and a trip wire applied with [Formula: see text] transition model coupled with the Reynolds-averaged Navier–Stokes equations were used to simulate ...
Jintao Yin +3 more
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Effect of a soccer ball’s surface texture on its aerodynamics and trajectory
Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology, 2018The effect of a soccer ball’s surface texture on its aerodynamics and flight trajectory is not definitively known. For this study, five soccer balls were used, each having 32 panels with different surface textures.
Sungchan Hong, J. Goff, T. Asai
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IET Control Theory & Applications
To recover steady, straight‐level flight of a high‐angle‐of‐attack aircraft from its oscillatory spin, a MIMO super‐twisting sliding control approach is proposed in this study.
Ahmad Bagheri, Mohammad Danesh
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To recover steady, straight‐level flight of a high‐angle‐of‐attack aircraft from its oscillatory spin, a MIMO super‐twisting sliding control approach is proposed in this study.
Ahmad Bagheri, Mohammad Danesh
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Aeronautical Journal, 2019
This paper describes the extensive numerical investigation carried out on a 203-mm spin-stabilised projectile to study the effects of Magnus force at high angles of attack on the stability and flight-trajectory parameters, for further validation and ...
F. A. Chughtai, J. Masud, S. Akhtar
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This paper describes the extensive numerical investigation carried out on a 203-mm spin-stabilised projectile to study the effects of Magnus force at high angles of attack on the stability and flight-trajectory parameters, for further validation and ...
F. A. Chughtai, J. Masud, S. Akhtar
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Aerodynamic characteristics of a spinning projectile with elastic deformation
Aerospace Science and Technology, 2016Abstract The elastic deformation of a spinning projectile with a large slenderness ratio influences its flight stability and maneuverability. Unsteady time-accurate simulation based on a dual-time stepping method and the dynamic mesh method were used to solve the unsteady Reynolds-averaged Navier–Stokes (URANS) equations and obtain the aerodynamic ...
Juanmian Lei +3 more
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IEEE Conference on Decision and Control, 2018
This article proposes a methodology for estimating the velocity (w.r.t the air) of a high-velocity flying shell from low-cost embedded sensors. The novelty is to exploit aerodynamics models in combination with a frequency detection approach, through a ...
Aurélien Fiot +3 more
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This article proposes a methodology for estimating the velocity (w.r.t the air) of a high-velocity flying shell from low-cost embedded sensors. The novelty is to exploit aerodynamics models in combination with a frequency detection approach, through a ...
Aurélien Fiot +3 more
semanticscholar +1 more source