Using Pressure Sensitive Paint to Measure Aerodynamic Forces on a Rotor Blade in Hover
Author : Anthony Neal Watkins
Publisher :
Page : 52 pages
File Size : 46,2 MB
Release : 2018
Category :
ISBN :
Author : Anthony Neal Watkins
Publisher :
Page : 52 pages
File Size : 46,2 MB
Release : 2018
Category :
ISBN :
Author :
Publisher :
Page : 25 pages
File Size : 50,19 MB
Release : 2000
Category :
ISBN :
The laboratory investigations of the characteristics of fast PSP are continued. In the first stage it was already investigated the spectra of emission and excitation, the calibration characteristics and the time response. In addition the spatial homogeneity of the covering is investigated. The scheme of experiment in T-105 wind tunnel using the helicopter devices MVP-5 and MVP-8 is developed and the supporting optical system is designed. The developed units and blocks to optical system are manufactured. The algorithms and programs of processing of the PSP images was enhanced to binary-type images. An units and techniques have been tested in TsAGI's T-125 wind tunnel at investigations of airfoil model with chord 100 mm, approximately equal to chord of model of the helicopter blade model under test.
Author : Frank A. DuWaldt
Publisher :
Page : 326 pages
File Size : 39,29 MB
Release : 1959
Category : Flutter (Aerodynamics)
ISBN :
Author :
Publisher :
Page : 704 pages
File Size : 17,75 MB
Release : 1995
Category : Aeronautics
ISBN :
Author : W. P. Jones
Publisher :
Page : 42 pages
File Size : 49,10 MB
Release : 1968
Category :
ISBN :
A theory is developed and used for determining the influence of compressibility on the aerodynamic forces acting on helicopter rotor blades when oscillating in hovering flight. The usual two-dimensional mathematical model of the flow is adopted in which a section of the reference rotor blade and its helical wake is replaced by an airfoil with a straight wake and a system of regularly spaced infinite wakes below, the amount of spacing depending on the downward flow induced by the rotor and the number of blades. (Author).
Author :
Publisher :
Page : 920 pages
File Size : 29,17 MB
Release : 1998
Category : Aeronautics
ISBN :
Author : B. M. Rao
Publisher :
Page : 56 pages
File Size : 13,50 MB
Release : 1969
Category :
ISBN :
A theory was developed for determining the influence of compressibility on the aerodynamic forces acting on helicopter rotor blades when oscillating in hovering flight. In this theory, the usual two-dimensional mathematical model of the flow was adopted in which a section of the reference rotor balde and its helical wake are replaced by an airfoil with a straight wake and a system of regularly spaced infinite wakes below, the amount of spacing depending on the downward flow induced by the rotor and the number of blades. In this report, the same theory is used to compute the aerodynamic derivative coefficients referred to the quarter-chord point on the airfoil. The results obtained are tabulated for single and two-bladed rotors for a range of values of the parameters involved. (Author).
Author :
Publisher :
Page : 712 pages
File Size : 19,46 MB
Release : 1993
Category : Aeronautics
ISBN :
A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International aerospace abstracts (IAA)
Author : Donald Robert Mendoza
Publisher :
Page : 82 pages
File Size : 37,62 MB
Release : 1995
Category :
ISBN :
Author : W. Z. Stepniewski
Publisher : Courier Corporation
Page : 640 pages
File Size : 38,13 MB
Release : 2013-04-22
Category : Technology & Engineering
ISBN : 0486318516
DIVClear, concise text covers aerodynamic phenomena of the rotor and offers guidelines for helicopter performance evaluation. Originally prepared for NASA. Prefaces. New Indexes. 10 black-and-white photos. 537 figures. /div