Author: Steve Carl Jamieson Parker
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The Quantitative Analysis of Transonic Flows by Holographic Interferometry
Author: Steve Carl Jamieson Parker
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
A Holographic Interferometry Technique for Measuring Transonic Flow Near a Rotor Blade
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 28
Book Description
A technique that uses holographic interferometry to record the first interferograms of the flow near a hovering transonic rotor blade is presented. A pulsed ruby laser is used to record interferograms of a 2-ft-diam field of view near a rotor tip operating at a tip Mach number of 0.09. Several interferograms, recorded along planes perpendicular to the rotor's tip-path-plane at various azimuthal angles around the flow, are presented. These interferograms yield quantitative information about shock structure and location, flow separation, and radiated noise that will help helicopter researchers understand the complexities of the flow around high-speed rotor blades and thus improve performance and reduce noise. (Author).
Publisher:
ISBN:
Category :
Languages : en
Pages : 28
Book Description
A technique that uses holographic interferometry to record the first interferograms of the flow near a hovering transonic rotor blade is presented. A pulsed ruby laser is used to record interferograms of a 2-ft-diam field of view near a rotor tip operating at a tip Mach number of 0.09. Several interferograms, recorded along planes perpendicular to the rotor's tip-path-plane at various azimuthal angles around the flow, are presented. These interferograms yield quantitative information about shock structure and location, flow separation, and radiated noise that will help helicopter researchers understand the complexities of the flow around high-speed rotor blades and thus improve performance and reduce noise. (Author).
Beam-Modulation Methods in Quantitative and Flow-Visualization Holographic Interferometry
Author: Arthur J. Decker
Publisher:
ISBN:
Category :
Languages : en
Pages : 16
Book Description
This report discusses heterodyne holographic interferometry and time-average holography with a frequency shifted reference beam. Both methods will be used for the measurement and visualization of internal transonic flows, where the target facility is reviewed. Measurements using heterodyne holographic interferometry are presented. Performance of the laser required for time-average holography of time-varying transonic flow is discussed.
Publisher:
ISBN:
Category :
Languages : en
Pages : 16
Book Description
This report discusses heterodyne holographic interferometry and time-average holography with a frequency shifted reference beam. Both methods will be used for the measurement and visualization of internal transonic flows, where the target facility is reviewed. Measurements using heterodyne holographic interferometry are presented. Performance of the laser required for time-average holography of time-varying transonic flow is discussed.
A Holographic Interferometry Technique for Measuring Transonic Flow Near a Rotor Blade
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781723440182
Category :
Languages : en
Pages : 24
Book Description
A technique that uses holographic interferometry to record the first interferograms of the flow near a hovering transonic rotor blade is presented. A pulsed ruby laser is used to record interferograms of a 2 ft diam field of view near a rotor tip operating at a tip Mach number of 0.90. Several interferograms, recorded along planes perpendicular to the rotor's tip path plane at various azimuth angles around the flow, are presented. These interferograms yield quantitative information about shock structure and location, flow separation, and radiated noise that will help helicopter researchers understand the complexities of the flow around high speed rotor blades and thus improve performance and reduce noise. Kittleson, J. K. Ames Research Center NASA-TM-84405, A-9432, NAS 1.15:84405, USAAVRADCOM-TR-83-A-10, AD-A134040 RTOP 505-45-11
Publisher: Createspace Independent Publishing Platform
ISBN: 9781723440182
Category :
Languages : en
Pages : 24
Book Description
A technique that uses holographic interferometry to record the first interferograms of the flow near a hovering transonic rotor blade is presented. A pulsed ruby laser is used to record interferograms of a 2 ft diam field of view near a rotor tip operating at a tip Mach number of 0.90. Several interferograms, recorded along planes perpendicular to the rotor's tip path plane at various azimuth angles around the flow, are presented. These interferograms yield quantitative information about shock structure and location, flow separation, and radiated noise that will help helicopter researchers understand the complexities of the flow around high speed rotor blades and thus improve performance and reduce noise. Kittleson, J. K. Ames Research Center NASA-TM-84405, A-9432, NAS 1.15:84405, USAAVRADCOM-TR-83-A-10, AD-A134040 RTOP 505-45-11
Feasibility Study of Three-dimensional Holographic Interferometry for Aerodynamics
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 116
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 116
Book Description
Shock Waves - Proceedings Of The 20th International Symposium (In 2 Volumes)
Author: Hans G Hornung
Publisher: World Scientific
ISBN: 9814548022
Category :
Languages : en
Pages : 1740
Book Description
The symposia take place every two years. They are the forum at which scientists concerned with shock waves present their research. They USE shock waves for chemical kinetics studies, for materials studies, and smashing kidney stones; they STUDY the phenomena associated with flows involving shock waves, such as supersonic flow, explosions, detonations, volcanic eruptions, and, in this symposium, even such with-it topics as impact of Shoemaker-Levy on Jupiter and blast waves in the World Trade Center. They also discover new, bigger and better ways of generating flows at hypervelocity speeds and develop their technological tools further.The international exchange of information is documented in the proceedings volumes, which have become a storehouse of information on the subject, documenting the history of this peculiar branch of science that involves chemists, physicists, engineers, geophysicists, material scientists and biologists.
Publisher: World Scientific
ISBN: 9814548022
Category :
Languages : en
Pages : 1740
Book Description
The symposia take place every two years. They are the forum at which scientists concerned with shock waves present their research. They USE shock waves for chemical kinetics studies, for materials studies, and smashing kidney stones; they STUDY the phenomena associated with flows involving shock waves, such as supersonic flow, explosions, detonations, volcanic eruptions, and, in this symposium, even such with-it topics as impact of Shoemaker-Levy on Jupiter and blast waves in the World Trade Center. They also discover new, bigger and better ways of generating flows at hypervelocity speeds and develop their technological tools further.The international exchange of information is documented in the proceedings volumes, which have become a storehouse of information on the subject, documenting the history of this peculiar branch of science that involves chemists, physicists, engineers, geophysicists, material scientists and biologists.
Three-dimensional, Transonic Rotor Flow Field Reconstructed from Holographic Interferogram Data
Author: J. K. Kittleson
Publisher:
ISBN:
Category :
Languages : en
Pages : 26
Book Description
Holographic interferometry and computer-assisted tomography (CAT) are used to determine the transonic flow field of a model rotor blade in hover. A pulsed ruby laser recorded 40 interferograms with a 61 cm-diam view field near the model rotor-blade tip operating at a tipo Mach number of 0.90. After digitizing the interferograms and extracting fringe-order functions, the data are transferred to a CAT code. The CAT code then calculates pressure coefficients in several planes above the blade surface. The values from the holography-CAT method compare favorably with previously obtained numerical computations and laser velocimeter measurements at most locations near the blade tip. The results demonstrate the techniques's potential for three-dimensional transonic rotor flow studies. Keywords: Holographic interferometry; Computer assisted tomography; Helicopter aerodynamics; Transonic aerodynamics.
Publisher:
ISBN:
Category :
Languages : en
Pages : 26
Book Description
Holographic interferometry and computer-assisted tomography (CAT) are used to determine the transonic flow field of a model rotor blade in hover. A pulsed ruby laser recorded 40 interferograms with a 61 cm-diam view field near the model rotor-blade tip operating at a tipo Mach number of 0.90. After digitizing the interferograms and extracting fringe-order functions, the data are transferred to a CAT code. The CAT code then calculates pressure coefficients in several planes above the blade surface. The values from the holography-CAT method compare favorably with previously obtained numerical computations and laser velocimeter measurements at most locations near the blade tip. The results demonstrate the techniques's potential for three-dimensional transonic rotor flow studies. Keywords: Holographic interferometry; Computer assisted tomography; Helicopter aerodynamics; Transonic aerodynamics.
Application of Holographic Interferometry to Density Field Determination in Transonic Corner Flow
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
The successful application of holographic interferometry to the study of density fields around opaque bodies in wind tunnel experiments has been reported in the literature. The present report extends this technique to the study of the asymmetric flow fields encountered near the wing-fuselage junction of an aerodynamic model in the transonic flow regime. Finite fringe interferometry has been used to investigate the three dimensional density field about a partially transparent wing-body structure. The resulting asymmetric density field and shock wave structure are shown to be an accurate representation of the phenomena encountered in aerodynamic corner flow. (Author).
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
The successful application of holographic interferometry to the study of density fields around opaque bodies in wind tunnel experiments has been reported in the literature. The present report extends this technique to the study of the asymmetric flow fields encountered near the wing-fuselage junction of an aerodynamic model in the transonic flow regime. Finite fringe interferometry has been used to investigate the three dimensional density field about a partially transparent wing-body structure. The resulting asymmetric density field and shock wave structure are shown to be an accurate representation of the phenomena encountered in aerodynamic corner flow. (Author).
Application of Holographic Interferometry to Density Field Determination in Transonic Corner Flow
Author: Daniel Joseph Collins
Publisher:
ISBN:
Category : Holography
Languages : en
Pages : 126
Book Description
The successful application of holographic interferometry to the study of density fields around opaque bodies in wind tunnel experiments has been reported in the literature. The present report extends this technique to the study of the asymmetric flow fields encountered near the wing-fuselage junction of an aerodynamic model in the transonic flow regime. Finite fringe interferometry has been used to investigate the three dimensional density field about a partially transparent wing-body structure. The resulting asymmetric density field and shock wave structure are shown to be an accurate representation of the phenomena encountered in aerodynamic corner flow. (Author).
Publisher:
ISBN:
Category : Holography
Languages : en
Pages : 126
Book Description
The successful application of holographic interferometry to the study of density fields around opaque bodies in wind tunnel experiments has been reported in the literature. The present report extends this technique to the study of the asymmetric flow fields encountered near the wing-fuselage junction of an aerodynamic model in the transonic flow regime. Finite fringe interferometry has been used to investigate the three dimensional density field about a partially transparent wing-body structure. The resulting asymmetric density field and shock wave structure are shown to be an accurate representation of the phenomena encountered in aerodynamic corner flow. (Author).
Scientific and Technical Aerospace Reports
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1460
Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1460
Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.