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in creator/contributor: "Clevenson, Sherman A."  
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Some Wind-Tunnel Experiments on Single-Degree-of-Freedom Flutter of Ailerons in the High Subsonic Speed Range

Description: Report presenting the results of wind-tunnel tests of three wing models with various aileron configurations to determine information about single-degree-of-freedom flutter. Results regarding the effect of density on the onset of oscillation, buzz frequency and amplitude, and formation of shock waves are provided.
Date: June 1956
Creator: Clevenson, Sherman A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Some Recent Experimental Data on Three-Dimensional Oscillating Air Forces

Description: Report presenting the status of oscillating air forces, including forces, moments, and their respective phase angles for a 45 degree swept wing of aspect ratio 2 and for two bodies of revolution. Derivatives based on available analyses were also demonstrated for those three configurations.
Date: June 27, 1955
Creator: Leadbetter, Sumner A. & Clevenson, Sherman A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Experimental Investigation of the Oscillating Forces and Moments on a Two-Dimensional Wing Equipped With an Oscillating Circular-Arc Spoiler

Description: Report presenting an experimental investigation in the flutter research tunnel on the oscillating forces and moments on a two-dimensional wing equipped with an oscillating circular-arc spoiler.
Date: March 1957
Creator: Clevenson, Sherman A. & Tomassoni, John E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Measurements of Aerodynamic Forces and Moments at Subsonic Speeds on a Simplified T-Tail Oscillating in Yaw About the Fin Midchord

Description: Report presenting some experimental measurements of aerodynamic forces and moments on a simple T-tail configuration oscillating in yaw about an axis through the midchord of the vertical fin. Coefficients regarding the rolling moment of the horizontal stabilizer, rolling moment, yawing moment, and side force of the tail are provided.
Date: September 1958
Creator: Clevenson, Sherman A. & Leadbetter, Sumner A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Experimental Measurements of Forces and Moments on a Two-Dimensional Oscillating Wing at Subsonic Speeds

Description: "Experimental results of lifts and moments about the quarter chord of a two-dimensional wing at subsonic Mach numbers are presented. A comparison of the experimental magnitude of the lift vector with the theory as given by Dietze showed good agreement. Comparisons of the moments and the quadrature component of lift with theory indicated that some refinements in the testing technique are necessary for the experimental determination of these quantities in the transonic range" (p. 1).
Date: June 1956
Creator: Clevenson, Sherman A. & Widmayer, Edward, Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Some Measurements of Aerodynamic Forces and Moments at Subsonic Speeds on a Wing-Tank Configuration Oscillating in Pitch About the Wing Midchord

Description: Report presenting measurements of the aerodynamic forces and moments acting on a wing-tank configuration, with or without fins, oscillating in pitch about the wing-root midchord.
Date: December 1956
Creator: Clevenson, Sherman A. & Leadbetter, Sumner A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Aerodynamics of Oscillating Control Surfaces at Transonic Speeds

Description: Memorandum presenting a discussion of oscillating flap-type and all-movable controls with particular emphasis on the aerodynamic forces and moments at transonic speeds. Hinge-moment results from recent wind-tunnel and rocket-powered-model tests are summarized for trailing-edge flap-type controls to illustrate the effects of control hinge-line position and profile shape on one-degree-of-freedom flutter of this type of control.
Date: June 17, 1957
Creator: Thompson, Robert F. & Clevenson, Sherman A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Experimental Investigation of the Oscillating Forces and Moments on a Two-Dimensional Wing Equipped With an Oscillating Circular-Arc Spoiler

Description: Report presenting an investigation in the flutter research tunnel to determine the oscillating forces and moments on a two-dimensional wing equipped with an oscillating circular-arc spoiler. The study indicated that force and moment coefficients and their phase angles are affected by Reynolds number, Mach number, and reduced frequency.
Date: January 12, 1954
Creator: Clevenson, Sherman A. & Tomassoni, John E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Some Measurements of Aerodynamic Forces and Moments at Subsonic Speeds on a Rectangular Wing of Aspect Ratio 2 Oscillating About the Midchord

Description: Report presenting some measurements of the aerodynamic forces and moments on a rectangular wing of aspect ratio 2 which oscillated about the midchord. The measurements were made at four frequencies over a range of Mach and Reynolds numbers. Results regarding the calculated values of various theories and coefficients of lift and moment are provided.
Date: May 1958
Creator: Widmayer, Edward, Jr.; Clevenson, Sherman A. & Leadbetter, Sumner A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Analytical and Experimental Investigation of Aerodynamic Forces and Moments on Low-Aspect-Ratio Wings Undergoing Flapping Oscillations

Description: "Aerodynamic forces and moments associated with flapping oscillations of finite wings at low speeds are considered. A comparison of theoretical and experimental results is made for a rectangular wing of aspect ratio 2. Calculated results are also given for three tapered wings of aspect ratio 3 with varying amounts of sweepback" (p. 1).
Date: August 1958
Creator: Woolston, Donald S.; Clevenson, Sherman A. & Leadbetter, Sumner A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Flight Test of NACA FR-1-B, a Low-Acceleration Rocket-Propelled Vehicle for Transonic Flutter Research

Description: Report presenting testing of a low-acceleration transonic flutter test vehicle to obtain flutter data on two similar sweptback wings which indicated that wing flutter was symmetrical in mode. Results regarding flight and flutter characteristics for the FR-1-B are provided.
Date: July 20, 1948
Creator: Angle, Ellwyn E.; Clevenson, Sherman A. & Lundstrom, Reginald R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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