Decontamination of Redox Feed Solutions by Super Filtrol Scavenging (open access)

Decontamination of Redox Feed Solutions by Super Filtrol Scavenging

From introduction: "This report examines the hazard which would result in the extremely unlikely event that all of the safety devices failed to operate either by accident or sabotage."
Date: December 2, 1949
Creator: Roake, W. E. & Hick, H. G.
System: The UNT Digital Library
The Determination of Uranium by Potentiometric Titration with Ferric Sulfate (open access)

The Determination of Uranium by Potentiometric Titration with Ferric Sulfate

Abstract: "A method for the potentiometric titration of uranium with ferric sulfate is described. This method provides a rapid and accurate way of determining the element in solutions free from interfering ions. Application of the method to analysis of pure uranium compounds and to uranium recovered from contaminated solutions by suitable procedures is briefly discussed."
Date: November 2, 1949
Creator: Grimes, W. R.
System: The UNT Digital Library
Theoretical analysis of various thrust-augmentation cycles for turbojet engines (open access)

Theoretical analysis of various thrust-augmentation cycles for turbojet engines

"The results of analytical studies of tail-pipe-burning, water-injection, and bleedoff methods of thrust augmentation are presented that provide an insight into the operating characteristics of these augmentation methods and summarizes the performance that may be obtained when applied to a typical turbojet engine. A brief description of the principles of operation of each augmentation method is given, together with curves that illustrate the effects of the principal design and operating variables of the augmentation system on the thrust and the liquid consumption of the engine. The necessity of designing tail-pipe burners with a low burner-inlet velocity, a low burner drag, and a high diffuser efficiency in order to obtain a high thrust augmentation and to minimize the loss in engine performance during nonburning operation is illustrated" (p. 593).
Date: September 2, 1949
Creator: Lundin, Bruce T.
System: The UNT Digital Library
Altitude-Test-Chamber Investigation of McDonnell Afterburner on J34 Engine (open access)

Altitude-Test-Chamber Investigation of McDonnell Afterburner on J34 Engine

"An altitude-test-chamber investigation was conducted to determine the operational and performance characteristics of a McDonnell afterburner with a fixed-area exhaust nozzle on a J34 engine. At rated engine speed, the altitude limit, as determined by combustion blow-out, occurred as a band of unstable operation of about 6000-foot altitude in width with minimum altitude limits from 31,000 feet at a simulated flight Mach number of 0.40 to about 45,500 feet at a simulated flight Mach number of 1.00. Considerable difficulty was experienced in attempting to establish or maintain balanced-cycle engine operation at altitudes above 36,000 feet" (p. 1).
Date: June 2, 1949
Creator: Reller, John O. & Dowman, Harry W.
System: The UNT Digital Library
Investigation of the Effect of Tip Tanks on the Wing Loading of a Republic F-84 Airplane in the Ames 40- by 80-foot Wind Tunnel (open access)

Investigation of the Effect of Tip Tanks on the Wing Loading of a Republic F-84 Airplane in the Ames 40- by 80-foot Wind Tunnel

Wind-tunnel tests at low Mach number of a Republic F-84C airplane were conducted to determine by pressure-distribution measurements the air loads on wing-tip tanks and the change in wing load distribution due to the presence of tip tanks. Measurements of the aeroelastic twist of the wing were also obtained. Results are presented in the form of loading coefficient, center-of- pressure location, pitching-moment coefficient, aerodynamic-center location, and aeroelastic twist. The investigation revealed that the redistributions in loading brought about by either the tip tanks or elastic deformation of the wing were relatively small when compared with the chnnges in loading normally associated with the deflection of an aileron.
Date: February 2, 1949
Creator: Hunton, Lynn W.; Dew, Joseph K. & Salisbury, Ralph D.
System: The UNT Digital Library
Comparison of performance of AN-F-58 and AN-F-32 fuels in J33-A-23 turbojet engine (open access)

Comparison of performance of AN-F-58 and AN-F-32 fuels in J33-A-23 turbojet engine

Report presenting an investigation using a 4600 pound-thrust turbojet engine as part of a program to determine the comparative performance of fuels conforming to specifications AN-F-58 and AN-F-32. Results regarding the altitude performance, altitude low-speed blow-out limits, idling limits of fuel-metering control, altitude windmilling starts, carbon-deposition rates, and iron oxide contamination are provided.
Date: June 2, 1949
Creator: Wilsted, H. D. & Armstrong, J. C.
System: The UNT Digital Library
An Approximate Method for Estimating the Incompressible Laminar Boundary-Layer Characteristics on a Flat Plate in Slipping Flow (open access)

An Approximate Method for Estimating the Incompressible Laminar Boundary-Layer Characteristics on a Flat Plate in Slipping Flow

Memorandum presenting an approximate method for the estimation of the properties of the incompressible laminar boundary layer on a flat plate in the slip-flow region using Karman's momentum method. At equivalent stations, the total thickness and the skin friction of a slipping boundary layer are less than that of the normal boundary layer at the same Reynolds number.
Date: May 2, 1949
Creator: Donaldson, Coleman duP.
System: The UNT Digital Library
Flight Investigation of the Jettisonable-Nose Method of Pilot Escape Using Rocket-Propelled Models (open access)

Flight Investigation of the Jettisonable-Nose Method of Pilot Escape Using Rocket-Propelled Models

Report discussing testing using two rocket-propelled models to test the jettisonable-nose method of pilot escape. The nose was jettisoned successfully on the second attempt and the accelerations produced were found to be within human tolerance. The first test ended with a collision of the nose and wing, indicating that this is a possible risk during power-on flight.
Date: June 2, 1949
Creator: Lundstrom, Reginald R. & O'Kelly, Burke R.
System: The UNT Digital Library
Survey of two-dimensional data on pitching-moment changes near maximum lift caused by deflection of high-lift devices (open access)

Survey of two-dimensional data on pitching-moment changes near maximum lift caused by deflection of high-lift devices

Report presenting a survey of two-dimensional data on trim changes near maximum lift resulting from deflection of various types of leading-edge and trialing-edge high lift devices. Results regarding pitching-moment coefficients, pitching-moment increments, and maximum lift coefficients are provided.
Date: December 2, 1949
Creator: Bidwell, Jerold M. & Cahill, Jones F.
System: The UNT Digital Library
Altitude-wind-tunnel investigation of AN-F-58 fuel in experimental version of J47 turbojet engine (open access)

Altitude-wind-tunnel investigation of AN-F-58 fuel in experimental version of J47 turbojet engine

An altitude-wind-tunnel investigation of the performance of AN-F-58 and AN-F-32 fuels in an experimental turbojet engine was conducted over a range of simulated altitudes and flight Mach numbers. Combustion efficiencies obtained with AN-F-58 and AN-F-32 fuels were approximately equal. The minimum-speed altitude operational limit was essentially the same with either AN-F-58 or AN-F-32 fuel. Starting characteristics of the two fuels were approximately the same at low wind milling speeds. Visual observation showed no apparent differences in the carbon-deposition rates of AN-F-58 and AN-F-32 fuels.
Date: May 2, 1949
Creator: Meyer, Carl L.
System: The UNT Digital Library
Tests of Lifting Surfaces on Conical and Cylindrical Portions of a Body at Subsonic Mach Numbers and at a Mach Number of 1.2 (open access)

Tests of Lifting Surfaces on Conical and Cylindrical Portions of a Body at Subsonic Mach Numbers and at a Mach Number of 1.2

Report presenting testing of low-aspect-ratio triangular-plan-form lifting surfaces located on conical and cylindrical portions of a body have been determined at Mach number 1.2 and several subsonic speeds to determine if the aerodynamic characteristics of these surfaces at supersonic speeds could be improved by locating them in the subsonic conical-flow field. Results regarding lift and drag coefficients and lift-curve slopes are provided.
Date: September 2, 1949
Creator: Osborne, Robert S. & Wright, John B.
System: The UNT Digital Library