Results 101 to 110 of about 8,095 (215)

Aerodynamic Characteristics of the Ventilated Design for Flapping Wing Micro Air Vehicle

The Scientific World Journal, 2014
Inspired by superior flight performance of natural flight masters like birds and insects and based on the ventilating flaps that can be opened and closed by the changing air pressure around the wing, a new flapping wing type has been proposed.
G. Q. Zhang, S. C. M. Yu
doaj   +1 more source

Survey of Army/NASA rotorcraft aeroelastic stability research [PDF]

Theoretical and experimental developments in the aeroelastic and aeromechanical stability of helicopters and tilt-rotor aircraft are addressed. Included are the underlying nonlinear structural mechanics of slender rotating beams, necessary for accurate ...
Hodges, Dewey H., Ormiston, Robert A., Peters, David A., Warmbrodt, William G.   +3 more
core   +1 more source

Advances in understanding autogyro flight dynamics [PDF]

, 2008
A comprehensive flight dynamics study of the autogyro is presented in this paper. A state of the art generic simulation of the vehicle type was developed and validated against flight data.
Houston, S., Thomson, D.G.
core  

Helicopter mathematical models and control law development for handling qualities research [PDF]

Progress made in joint NASA/Army research concerning rotorcraft flight-dynamics modeling, design methodologies for rotorcraft flight-control laws, and rotorcraft parameter identification is reviewed.
Aiken, Edwin W., Chen, Robert T. N., Lebacqz, J. Victor, Tischler, Mark B.   +3 more
core   +1 more source

Modeling the Motion of a Flapping Wing Aerial Vehicle

MATEC Web of Conferences, 2017
The article discusses the vertical flight of a flapping wing aerial vehicle, which is also called an ornithopter. The robot is a chain of five links connected in series by active cylindrical hinges with the central link being the body and the remainder ...
Vorochaeva L.Y., Efimov S.V., Loktionova O.G., Lushnikov B.V., Jatsun S.F.   +4 more
doaj   +1 more source

The Influence of Feedback on the Aeroelastic Behavior of Tilt Proprotor Aircraft Including the Effects of Fuselage Motion [PDF]

The influence of single loop feedbacks to improve the stability of the system are considered. Reduced order dynamic models are employed where appropriate to promote physical insight. The influence of fuselage freedom on the aeroelastic stability, and the
Curtiss, H. C., Jr., Komatsuzaki, T., Traybar, J. J.   +2 more
core   +1 more source

PAC: A Novel Self-Adaptive Neuro-Fuzzy Controller for Micro Aerial Vehicles

, 2019
There exists an increasing demand for a flexible and computationally efficient controller for micro aerial vehicles (MAVs) due to a high degree of environmental perturbations.
Anavatti, Sreenatha G., Ferdaus, Md Meftahul, Garratt, Matthew A., Lughofer, Edwin, Pratama, Mahardhika   +4 more
core   +1 more source

Design of Corrugated Airfoil for a Flapping Wing Micro Air Vehicle

International Journal of Aerospace Engineering
The design of micro air vehicles (MAVs) presents unique challenges, particularly in achieving efficient aerodynamic performance and maneuverability within strict size and weight constraints.
Syed Hossein Raza Hamdani, Fatima Tuz Zehra, Muhammad Umer Sohail, Hassan Elahi, Muhammad Rizwan Mughal   +4 more
doaj   +1 more source

Variable sampling time discrete sliding mode control for a flapping wing micro air vehicle using flapping frequency as the control input

Nonlinear Engineering
In this article, two main assumptions commonly used in the reported literature are relaxed. First, instead of a continuous time controller, a discrete time controller is proposed.
Hill Joshua, Fahimi Farbod
doaj   +1 more source

Investigation of Corrugated Wing in Unsteady Motion

Journal of Applied Fluid Mechanics, 2017
Delayed stall is the most dominant lift enhancing factor in insect flapping motion. Micro air vehicle operates at Reynolds number 104-105; slightly higher than the insects’ Reynolds number (Re).
A. Shahzad, H. R. Hamdani, Ahmad Aizaz
doaj