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Showing 1 to 12 of 12 for “"Trailing Edge Flap"”.
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Helicopter rotor smoothing with a continuous trailing - edge flap
… rotor smoothing process with a continuous trailing-edge flap (CTEF). The CTEF is a monolithic active blade control design with no mechanical linkages compared to the conventional discrete trailing-edge flap (DTEF). In this design, micro fiber composite (MFC) layers are embedded inside the …
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Developement of Piezo-Hydraulic Actuation Systems Technology for use on a Helicopter Trailing Edge Flap
… requirements necessary for actuation of a trailing edge flap for a helicopter main rotor blade. Due to extremely small displacements produced by piezoelectric actuators, their output is amplified several times in order to produce the required displacement for this device. The amplification …
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Finite-State Airloads for Deformable Airfoils on Fixed and Rotating Wings
… all generalized forces of a deformable airfoil. Trailing-edge flap deflections are included implicitly as a special case of the general deformations. The theory allows for a thin airfoil performing small arbitrary motions with respect to a reference frame that can perform arbitrarily large …
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Actuator-Work Concepts Applied to Morphing and Conventional Aerodynamic Control Devices
… cases, it is found that a quadratic (morphing) trailing edge flap requires less practical work than a linear flap of the same size. As the angle of attack at which the change in lift occurs increases, the benefit of the quadratic flap becomes greater. For multiple control surface cases, it is …
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Approximations for Singular Integral Equations
… degree of freedom structure, an airfoil with trailing edge flap, in a two dimensional unsteady flow. The flap can be viewed as an active control surface to dampen vibrations that contribute to flutter. The goal of this work is to provide accurate approximations for weakly singular neutral …
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Unsteady Aerodynamic/Hydrodynamic Analysis of Bio-inspired Flapping Elements at Low Reynolds Number
… flow control mechanisms generated by unsteady flapping body motion. Understanding and characterizing the aerodynamic phenomena associated with the unsteady motion is vital to predict the unsteady fluid loads generated, to implement control methodologies, and to assess the dynamic stability and …
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Aircraft stability and departure prediction using Eigenvalue Sensitivity analysis
… control system to drive an automatic leading and trailing edge flap schedule, demonstrating the accuracy and versatility of the program.
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The development of a reversible and finitely variable camber windsurf fin
… camber lifting surfaces utilise leading and trailing edge flap technologies to vary the geometry (camber) of the cross-section. However, this method for generating variable camber is not considered to be suitable or practical for the windsurf fin, primarily due to the increases in drag …
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Numerical investigation of slat noise attenuation using acoustic liners
… airfoil comprising a main element, a leading edge slat and trailing edge flap geometry is employed in the investigation. Numerical simulations are performed to investigate the generation and far field propagation of the slat noise. A numerical approach is developed that combines near field …
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Boundary Layer Separation Control on a Salient Back-facing Ramp
… the serration flow control devices on a salient edge where the laminar boundary layer separation is two-dimensional. Three geometries of serrations: a sharp delta, a double delta and a divergent delta are examined on 15° and 30° deflected, backward-facing ramps. Parameterizing the device spacing …