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 Collection: National Advisory Committee for Aeronautics Collection
A statistical study of wing lift at ground contact for four transport airplanes

A statistical study of wing lift at ground contact for four transport airplanes

Date: April 1, 1955
Creator: Lindquist, Dean C
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Application of a high-temperature static strain gage to the measurement of thermal stresses in a turbine stator vane

Application of a high-temperature static strain gage to the measurement of thermal stresses in a turbine stator vane

Date: March 1, 1958
Creator: Kemp, R H; Morse, C R & Hirschberg, M H
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Investigation of lateral control near the stall flight investigation with a light high-wing monoplane tested with various amounts of washout and various lengths of leading-edge slot

Investigation of lateral control near the stall flight investigation with a light high-wing monoplane tested with various amounts of washout and various lengths of leading-edge slot

Date: May 1, 1953
Creator: Weick, Fred E; Sevelson, Maurice S; Mcclure, James G & Flanagan, Marion D
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Abnormal grain growth in M-252 and S-816 alloys

Abnormal grain growth in M-252 and S-816 alloys

Date: November 1, 1957
Creator: Decker, R F; Rush, A I; Dano, A G & Freeman, J W
Description: An experimental investigation was carried out on air- and vacuum-melted M-252 and S-816 alloys to find conditions of heating and hot-working which resulted in abnormal grain growth. The experiments were mainly limited to normal conditions of heating for hot-working and heat treatment and normal temperatures of solution treatment were used to allow grain growth after susceptibility to abnormal grain growth was developed by various experimental conditions. Results indicated that small reductions of essentially strain-free metal were the basic cause of such grain growth.
Contributing Partner: UNT Libraries Government Documents Department
Intergranular corrosion of high-purity aluminum in hydrochloric acid II : grain-boundary segregation of impurity atoms

Intergranular corrosion of high-purity aluminum in hydrochloric acid II : grain-boundary segregation of impurity atoms

Date: April 1, 1955
Creator: Metzger, M & Intrater, J
Description: None
Contributing Partner: UNT Libraries Government Documents Department
An analytical method of estimating turbine performance

An analytical method of estimating turbine performance

Date: December 29, 1948
Creator: Kochendorfer, Fred D & Nettles, J Cary
Description: A method is developed by which the performance of a turbine over a range of operating conditions can be analytically estimated from the blade angles and flow areas. In order to use the method, certain coefficients that determine the weight flow and friction losses must be approximated. The method is used to calculate the performance of the single-stage turbine of a commercial aircraft gas-turbine engine and the calculated performance is compared with the performance indicated by experimental data. For the turbine of the typical example, the assumed pressure losses and turning angles give a calculated performance that represents the trends of the experimental performance with reasonable accuracy. The exact agreement between analytical performance and experimental performance is contingent upon the proper selection of the blading-loss parameter. A variation of blading-loss parameter from 0.3 to 0.5 includes most of the experimental data from the turbine investigated.
Contributing Partner: UNT Libraries Government Documents Department
The subsonic aerodynamic characteristics of two double-wedge airfoil sections suitable for supersonic flight

The subsonic aerodynamic characteristics of two double-wedge airfoil sections suitable for supersonic flight

Date: May 12, 1947
Creator: Solomon, Joseph & Henney, Floyd W
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Effect of airfoil profile of symmetrical sections on the low-speed static-stability and yawing derivatives of 45 degrees sweptback wing models of aspect ratio 2.61

Effect of airfoil profile of symmetrical sections on the low-speed static-stability and yawing derivatives of 45 degrees sweptback wing models of aspect ratio 2.61

Date: November 9, 1948
Creator: Letko, William & Jaquet, Byron M
Description: None
Contributing Partner: UNT Libraries Government Documents Department
: The linear perturbation theory of axially symmetric compressible flow with application to the effect of compressibility on the pressure coefficient at the surface of a body of revolution

: The linear perturbation theory of axially symmetric compressible flow with application to the effect of compressibility on the pressure coefficient at the surface of a body of revolution

Date: July 18, 1947
Creator: Herriot, John G
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Aerodynamic characteristics of flying-boat hulls having length-beam ratios of 20 and 30

Aerodynamic characteristics of flying-boat hulls having length-beam ratios of 20 and 30

Date: November 10, 1948
Creator: Riebe, John M
Description: None
Contributing Partner: UNT Libraries Government Documents Department