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A limit pressure coefficient and an estimation of limit forces on airfoils at supersonic speeds

Description: Report presenting the results of an estimation of the limit forces on airfoils at supersonic speeds. The limit pressure coefficient attainable on an airfoil is shown to be about 70 percent of the pressure coefficient for a vacuum over a wide range of Mach numbers.
Date: August 23, 1948
Creator: Mayer, John P.
Partner: UNT Libraries Government Documents Department

Estimation of lift and drag of airfoils at near sonic speeds and in the presence of detached shock waves

Description: Report presenting a semiempirical method of estimating the forces on airfoil at near sonic speeds and in the presence of detached shock waves. The calculated values were found to be in good agreement with wind-tunnel testing of the forces on sharp-nose airfoils and two-dimensional wings.
Date: February 23, 1949
Creator: Mayer, John P.
Partner: UNT Libraries Government Documents Department

Flight measurements with the Douglas D-558-II (BuAero No. 37974) research airplane: measurements of the buffet boundary and peak airplane normal-force coefficients at Mach numbers up to 0.90

Description: Report presenting measurements of the buffet boundary and peak normal-force coefficients for the Douglas D-558-II airplane up to a Mach number of 0.90. Results regarding airplane lift curves and a comparison between the maximum normal-force coefficients and buffet boundaries for this particular aircraft and the Bell X-1 airplane are also provided.
Date: August 28, 1950
Creator: Mayer, John P. & Valentine, George M.
Partner: UNT Libraries Government Documents Department

Flight measurements with the Douglas D-558-II (BuAero No. 37974) research airplane: measurements of the distribution of the aerodynamic load among the wing, fuselage, and horizontal tail at Mach numbers up to 0.87

Description: From Summary: "Flight measurements of the aerodynamic wing and tail loads have been made on the Douglas D-558-II airplane from which the distribution of the aerodynamic load among the wing, fuselage, and horizontal tail has been determined at Mach numbers up to 0.87. These measurements indicate that, for normal-force coefficients less than 0.7, the distribution of air load among the airplane components does not change appreciably with Mach number at Mach number up to 0.87. The measurements also indicate that, for all flight configurations, the increase in airplane normal-force coefficient above the angle of attack at which the wing reaches its maximum normal-force coefficient is due principally to the contribution of the fuselage to the airplane normal-force coefficient."
Date: January 19, 1951
Creator: Mayer, John P. & Valentine, George M.
Partner: UNT Libraries Government Documents Department

The frequency content of the control input and airplane response obtained during service operations of fighter airplanes

Description: The frequency content of the control input and resulting airplane motions is presented as power spectral densities for one operational flight of the fighter airplane (Republic F-84G). The frequency content, which is described by the shape of the spectrum, may be useful in providing inputs for the design of power control systems. For normal load factors, the results presented for the operational flight considered are in general agreement with the results of more complete data on three fighter airplanes (Republic F-84G, Republic F-84F, and North American F-86A) . The frequency content for the three control positions was similar and the frequency content for the three angular velocities was also similar when normalized by dividing the mean-square value.
Date: July 12, 1957
Creator: Mayer, John P. & Hamer, Harold A.
Partner: UNT Libraries Government Documents Department

Applications of power spectral analysis methods to maneuver loads obtained on jet fighter airplanes during service operations

Description: Report presenting power spectral densities of normal load factor obtained for two service operational training flights of a Republic F-84G airplane and three service operational training flights of a North American F-86A airplane in order to indicate the load-factor frequency content and possible uses of power spectral methods in analyzing maneuver load data. Results regarding the spectra of the two different planes, an analytical representation of maneuver load spectrum, and probability distributions are provided.
Date: January 15, 1957
Creator: Mayer, John P. & Hamer, Harold A.
Partner: UNT Libraries Government Documents Department

Measurements of the wing and tail loads during the acceptance tests of Bell XS-1 research airplane

Description: Report presenting flight measurements obtained during acceptance tests conducted by the Bell Aircraft Corporation on the XS-1 research airplane. The primary focus was on the aerodynamic loads, handling qualities, maximum lift, and buffet boundaries of the airplane.
Date: April 13, 1948
Creator: Beeler, De E. & Mayer, John P.
Partner: UNT Libraries Government Documents Department

A study of service-imposed maneuvers of four jet fighter airplanes in relation to their handling qualities and calculated dynamic characteristics

Description: Report presenting results from a flight program conducted to obtain information on the airplane response and actual rates and amounts of control motion used by service pilots to perform squadron operational training missions, which are correlated with the airplane handling qualities and calculated maximum dynamic response. Results regarding longitudinal characteristics, rolling characteristics, and sideslip characteristics are provided.
Date: August 15, 1955
Creator: Mayer, John P. & Hamer, Harold A.
Partner: UNT Libraries Government Documents Department

Analysis of V-G records from ten types of Navy airplanes in squadron operations during the period 1949 to 1953

Description: From Introduction: "The purpose of this paper is to present an analysis of the data for the remaining airplanes where the data were sufficient to warrant analysis. The data analyzed represent totals of 351 to 5660 hours of operations with ten types of Navy airplanes and were recorded during the period 1949 to 1953."
Date: March 25, 1955
Creator: Mayer, John P. & Harris, Agnes E.
Partner: UNT Libraries Government Documents Department

Flight measurements with the Douglas D-558-II (BuAero No. 37974) research airplane: measurements of wing loads at Mach numbers up to 0.87

Description: Report presenting flight measurements of the aerodynamic wing normal force, bending moment, and pitching moment using strain gains on the D-558-II airplane at Mach numbers up to 0.87 and angles of attack up to 38 degrees. Results regarding Mach number effects and normal-force-coefficient effects are provided.
Date: December 26, 1950
Creator: Mayer, John P.; Valentine, George M. & Swanson, Beverly J.
Partner: UNT Libraries Government Documents Department

Preliminary results from a limited investigation of the use of controls during service operational training with fighter airplanes

Description: Report presenting results from a limited investigation of the use of controls during service operational training with four fighter airplanes. The service pilots utilized the positive V-n envelope in performing their training missions but rarely approached the negative V-n envelope. Results regarding the operational V-n diagram for the F-86A, F-84G, F2H-2, and F-84G, design curves, maximum elevator rates, maximum aileron rates, rolling velocities, and control surface angles are provided.
Date: June 16, 1953
Creator: Mayer, John P.; Huss, Carl R. & Hamer, Harold A.
Partner: UNT Libraries Government Documents Department

Notes on a large-scale statistical program for the establishment of maneuver-loads design criteria for military airplanes

Description: Report presenting an outline of a proposed statistical program to collect data for the establishment of more realistic maneuver-loads design criteria. Some sample experimental data are also included to indicate possible methods of statistical analysis and the potential sample size needed for the program.
Date: July 17, 1957
Creator: Mayer, John P.; Stone, Ralph W., Jr. & Hamer, Harold A.
Partner: UNT Libraries Government Documents Department

Comparison of normal load factors experienced with jet fighter airplanes during combat operations with those of flight tests conducted by the NACA during operational training

Description: Report presenting a comparison of normal load factors measured during combat operations with those measured during an NACA flight program conducted with fully instrumented service airplanes in operational training. Results indicated that for an equal number of maneuvers, normal load factors obtained from the NACA program are greater than those obtained during combat when based on the service-limit load factor.
Date: July 7, 1954
Creator: Hamer, Harold A.; Huss, Carl R. & Mayer, John P.
Partner: UNT Libraries Government Documents Department

Flight measurements with the Douglas D-558-II (BuAero No. 37974) research airplane : determination of the aerodynamic center and zero-lift pitching-moment coefficient of the wing-fuselage combination by means of tail-load measurements in the Mach num

Description: Report presenting flight measurements of aerodynamic tail loads made on the Douglas D-558-II from which the variation with Mach number of the wing-fuselage aerodynamic center, static-longitudinal-stability parameter, the tail load per g, and the zero-lift wing-fuselage pitching-moment coefficient determined up to Mach number 0.87.
Date: July 11, 1950
Creator: Mayer, John P.; Valentine, George M. & Mayer, Geraldine C.
Partner: UNT Libraries Government Documents Department

A study of the use of controls and the resulting airplane response during service training operations of four jet fighter airplanes

Description: Report presenting results from a limited flight program to obtain information on airplane response and actual rates and amounts of control motion used by service pilot in performance of squadron operational training. Results regarding control deflection, control rates, airplane angular velocities, airplane angular accelerations, angle of attack and angle of sideslip, airplane load factors, and airspeed and altitude are provided.
Date: June 22, 1954
Creator: Mayer, John P.; Hamer, Harold A. & Huss, Carl R.
Partner: UNT Libraries Government Documents Department

Time-history data of maneuvers performed by a Republic F-84F airplane during squadron operational training

Description: Report presenting a control-motion study program with a Republic F-84F using a cross section of tactical maneuvers performed during squadron operational training. Time-history figures, airspeed and Mach number envelopes, and other aerodynamic characteristics are provided.
Date: July 22, 1957
Creator: Hamer, Harold A.; Mayer, John P. & Case, Donald B.
Partner: UNT Libraries Government Documents Department