Properties of Low-Carbon N-155 Alloy Bar Stock From 1200 to 1800 Degrees Fahrenheit (open access)

Properties of Low-Carbon N-155 Alloy Bar Stock From 1200 to 1800 Degrees Fahrenheit

Memorandum presenting the results of an investigation to establish rupture and total-deformation strengths at 1200 and 1800 degrees Fahrenheit for typical commercial treatments of low-carbon N-155 alloy. The results show that there were large differences in strength between the heats of bar stock at temperatures above 1200 degrees Fahrenheit except when a 2200 degree Fahrenheit solution treatment was used.
Date: May 3, 1951
Creator: Freeman, J. W. & White, A. E.
System: The UNT Digital Library
Preliminary investigation of cone-type diffusers designed for minimum spillage at inlet (open access)

Preliminary investigation of cone-type diffusers designed for minimum spillage at inlet

Report presenting a preliminary investigation of cone-type diffusers designed for minimum spillage at the inlet during operation in the supersonic tunnel at Mach number 1.85. Pressure recoveries of a series of stationary cones with included angles from 20 degrees to 60 degrees were investigated. Results regarding the pressure recovery with stationary cones and pressure recovery of movable-cone configurations are provided.
Date: May 3, 1948
Creator: Luidens, Roger W. & Hunczak, Henry
System: The UNT Digital Library
Preliminary investigation of constant-geometry, variable Mach number, supersonic tunnel with porous walls (open access)

Preliminary investigation of constant-geometry, variable Mach number, supersonic tunnel with porous walls

Report presenting a method of generating variable Mach number supersonic flow in a channel of fixed geometry by the removal of air through uniform porous walls. Calculated porosity distributions are presented for several minimum-length nozzles designed to operate at Mach numbers up to 2.0. Experimental and analytical data is presented.
Date: May 3, 1950
Creator: Nelson, William J. & Klevatt, Paul L.
System: The UNT Digital Library
A Comparison of Two Techniques Utilizing Rocket-Propelled Vehicles for the Determination of the Damping-in-Roll Derivative (open access)

A Comparison of Two Techniques Utilizing Rocket-Propelled Vehicles for the Determination of the Damping-in-Roll Derivative

Report presenting rocket-powered flight investigations for the purpose of comparing damping-in-roll results obtained from a torque-nozzle technique. Results regarding basic aerodynamic quantities, data from the torque-nozzle technique, wing-dropping phenomenon, and comparison of the values of the two techniques are provided.
Date: May 3, 1951
Creator: Stone, David G. & Sandahl, Carl A.
System: The UNT Digital Library