The calculation of drag for airfoil sections and bodies of revolution at subcritical speeds (open access)

The calculation of drag for airfoil sections and bodies of revolution at subcritical speeds

Report presenting a method for calculating the drag, in a real compressible fluid and at subcritical Mach numbers, of airfoil sections at arbitrary life coefficients and of bodies of revolution at zero angle of attack. The values of drag coefficient are compared with values obtained for the same configurations by other methods. The differences between the results are found to lie withint he limits of accuracy of current experimental techniques.
Date: April 23, 1947
Creator: Heaslet, Max A. & Nitzberg, Gerald E.
Object Type: Report
System: The UNT Digital Library
Flight-Test Measurements of Aileron Control Surface Behavior at Super Critical Mach Numbers (open access)

Flight-Test Measurements of Aileron Control Surface Behavior at Super Critical Mach Numbers

Report presenting measurements of the behavior at supercritical Mach numbers of ailerons on a jet-propelled fighter plane. Results regarding aileron upfloat and aileron oscillations are provided.
Date: April 23, 1947
Creator: Brown, Harvey H.; Rathert, George A., Jr. & Clousing, Lawrence A.
Object Type: Report
System: The UNT Digital Library
Tests of Submerged Duct Installation on the Ryan FR-1 Airplane in the Ames 40- by 80-Foot Wind Tunnel (open access)

Tests of Submerged Duct Installation on the Ryan FR-1 Airplane in the Ames 40- by 80-Foot Wind Tunnel

"An investigation of an NACA submerged intake installation on the Ryan FR-1 was conducted to determine the full-scale aerodynamic characteristics of this installation. In addition, tests were conducted on the submerged inlet with revised entrance lips and deflectors to determine the configuration which would result in the best dynamic pressure recovery measured at the inlet for this installation without a major rework of the entrance. Stalling of the air flow over the inner lip surface created excessive dynamic pressure losses with the original entrance. The revised entrance produced a 12-percent increase in dynamic pressure recovery at the design high-speed inlet-velocity ratio and resulted in an improvement of the critical-speed characteristics of the entrance lip" (p. 1).
Date: April 23, 1947
Creator: Martin, Norman J.
Object Type: Report
System: The UNT Digital Library
Texas Attorney General Opinion: V-161 (open access)

Texas Attorney General Opinion: V-161

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Price Daniel, regarding a legal question submitted for clarification: The constitutionality of H.B. 38, on appropriation to pay taxes on certain State Prison Farm lands.
Date: April 23, 1947
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History