Aerodynamics Of The Free And Forced Oscillation Of A Disk At Subsonic Speeds
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Author | : William W. Willmarth |
Publisher | : |
Total Pages | : 0 |
Release | : 1964 |
Genre | : Aerodynamics |
ISBN | : |
Download Aerodynamics of the Free and Forced Oscillation of a Disk at Subsonic Speeds Book in PDF, Epub and Kindle
Detailed studies were made of the free and forced oscillation of disks constrained to rotate about a fixed axis normal to the free-stream velocity. When the disk is free to rotate it oscillates about its axis at a definite frequency but with slowly varying amplitude and phase. Analog computer elements were used to make detailed measurements of the static restoring moment, dynamic restoring moment, average damping moment, statistical properties of the disk motion, and the power spectrum of the fluctuating turbulent moment acting on a fixed disk. The measurements show that the impressed forcing function that causes the oscillation originates in the turbulent fluctuations in the disk wake. Using the measurements and the theory for forced random oscillations of a linear system, good qualitative prediction was made of the oscillation frequency, in all cases, and the mean square oscillation amplitude, for one particular case with very low friction of the supporting pivot. (Author).
Author | : W.W. Willmarth N.E. Hawk |
Publisher | : |
Total Pages | : 56 |
Release | : 1964 |
Genre | : |
ISBN | : |
Download Aerodynamics of the Free and Forced Oscillation of a Disk at Subsonic Speeds Book in PDF, Epub and Kindle
Author | : United States. Air Force. Office of Aerospace Research |
Publisher | : |
Total Pages | : 550 |
Release | : 1963 |
Genre | : Aeronautics |
ISBN | : |
Download OAR Cumulative Index of Research Results Book in PDF, Epub and Kindle
Author | : |
Publisher | : |
Total Pages | : 90 |
Release | : |
Genre | : Aeronautics |
ISBN | : |
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Author | : |
Publisher | : |
Total Pages | : 286 |
Release | : |
Genre | : Aeronautics |
ISBN | : |
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Author | : Sumner A. Leadbetter |
Publisher | : |
Total Pages | : 34 |
Release | : 1958 |
Genre | : Aerodynamic load |
ISBN | : |
Download Some Measurements at Subsonic Speeds of the Aerodynamic Forces and Moments on Two Delta Wings of Aspect Ratios 2 and 4 Oscillating about the Midchord Book in PDF, Epub and Kindle
Author | : United States. Air Force. Office of Aerospace Research |
Publisher | : |
Total Pages | : 290 |
Release | : 1964 |
Genre | : Aeronautics, Military |
ISBN | : |
Download OAR Quarterly Index of Current Research Results Book in PDF, Epub and Kindle
Author | : Fred A. Demele |
Publisher | : |
Total Pages | : 52 |
Release | : 1961 |
Genre | : Aerodynamics |
ISBN | : |
Download Subsonic Aerodynamic Characteristics of Disk Re-entry Configurations with Elliptic Cross Sections and Thickness-diameter Ratios of 0.225 and 0.325 Book in PDF, Epub and Kindle
Author | : |
Publisher | : |
Total Pages | : 702 |
Release | : 1995 |
Genre | : Aeronautics |
ISBN | : |
Download Scientific and Technical Aerospace Reports Book in PDF, Epub and Kindle
Author | : Donald L. Lansing |
Publisher | : |
Total Pages | : 48 |
Release | : 1962 |
Genre | : Aerodynamics |
ISBN | : |
Download Velocity Potential and Forces on Oscillating Slender Bodies of Revolution in Supersonic Flow Expanded to the Fifth Power of the Frequency Book in PDF, Epub and Kindle