Results 51 to 60 of about 150,010 (213)

Suppression of flutter [PDF]

open access: yes, 1973
An active aerodynamic control system to control flutter over a large range of oscillatory frequencies is described. The system is not affected by mass, stiffness, elastic axis, or center of gravity location of the system, mode of vibration, or Mach ...
Nissim, E.
core   +1 more source

Critical review of the trailing edge condition in steady and unsteady flow. Blade flutter in compressors and fans: Numerical simulation of the aerodynamic loading [PDF]

open access: yes
Existing interpretations of the trailing edge condition, addressing both theoretical and experimental works in steady, as well as unsteady flows are critically reviewed.
Johnson, S. H.   +2 more
core   +1 more source

Self-noise produced by an airfoil with nonflat plate trailing-edge serrations [PDF]

open access: yes, 2013
This paper represents the results of an experimental study aimed at reducing the airfoil self-noise by the trailing edge serration of four different sawtooth geometries (defined in the serration angle and length).
Chong, TP   +3 more
core   +1 more source

Aircraft wing trailing-edge noise [PDF]

open access: yes
The mechanism and sound pressure level of the trailing-edge noise for two-dimensional turbulent boundary layer flow was examined. Experiment is compared with current theory.
Hodgson, T. H., Underwood, R. L.
core   +1 more source

Short-scale effects on model boundary-layer spots [PDF]

open access: yes, 1995
This theoretical work, on the spot in an otherwise laminar boundary layer, concerns the initial-value problem for three-dimensional inviscid disturbances covering a wide range of scales. The study asks whether or not comparatively short scales can have a
Bowles, RGA, Smith, FT
core   +1 more source

Effect of trailing edge geometry and thickness on the performance of certain turbine stator blading [PDF]

open access: yes
The experimental and analytical investigation included solid blades with five different trailing-edge thicknesses and four different trailing-edge geometries.
Helon, R. M., Prust, H. W., Jr.
core   +1 more source

Adaptive belt precision grinding for the weak rigidity deformation of blisk leading and trailing edge

open access: yesAdvances in Mechanical Engineering, 2017
Blisk is an important component for the aero-engine, whose surface quality plays a significant role in its performance. So it is necessary to develop a novel and viable method to improve the blisk leading and trailing edge profile shape precision and ...
Guijian Xiao, Yun Huang
doaj   +1 more source

Mechanical properties of honeycomb structure with zero Poisson’s ratio for flexible trailing edge

open access: yesJournal of Aeronautical Materials
To provide technical support for the design of new seamless flexible trailing edge structures,a comparative study of the elastic properties of four novel zero Poisson’s ratio honeycomb structures(sinusoidal-type,V-type,segmented sinusoidal-type and ...
ZHOU Yue, LI Bo, XU Weiwei, WEN Youyi
doaj   +1 more source

Cold-air study of the effect on turbine stator blade aerodynamic performance of coolant ejection from various trailing-edge slot geometries. 1: Experimental results [PDF]

open access: yes
Trailing-edge slot configurations were investigated in a two-dimensional cascade of turbine stator blades. The trailing-edge slots were incorporated into blades with round trailing edges.
Bartlett, W. M., Prust, H. W., Jr.
core   +1 more source

Estimation of deviation angle for axial-flow compressor blade sections using inviscid-flow solutions [PDF]

open access: yes
Development of a method of estimating deviation angles by analytical procedures was begun. Solutions for inviscid, irrotational flow in the blade-to-blade plane were obtained with a finite-difference calculation method.
Miller, M. J.
core   +1 more source

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