An analysis of the effect of a curved ramp on the take-off performance of catapult-launched airplanes (open access)

An analysis of the effect of a curved ramp on the take-off performance of catapult-launched airplanes

From Summary: "Results of flight-path computations are presented for launchings from a straight deck and the curved ramp under conditions of insufficient lift at the instant of take-off."
Date: November 5, 1952
Creator: Reed, Wilmer H., III
System: The UNT Digital Library
Some Low-Speed Studies of the Effects of Wing Location on Wing-Deformation-Body-Freedom Flutter (open access)

Some Low-Speed Studies of the Effects of Wing Location on Wing-Deformation-Body-Freedom Flutter

Report presenting an investigation of flutter of wings mounted on the after portion of a body free to pitch was made in the flutter research tunnel. Uniform wings of 0 and 45 degrees sweep were tested at various positions rearward of the pitch axis. A low-frequency flutter was observed on the unswept wing, but no flutter was obtained for the swept wings.
Date: November 5, 1952
Creator: Widmayer, E., Jr.
System: The UNT Digital Library
Analytical study of static and low-speed performance of thin propellers using two-speed gear ratios to obtain optimum rotational speeds (open access)

Analytical study of static and low-speed performance of thin propellers using two-speed gear ratios to obtain optimum rotational speeds

From Introduction: "The purpose of the present paper is to investigate the effect of two-speed gearing on the take-off efficiency under certain conditions. The present paper gives charts from which the efficiencies can be readily computed for optimum rotational speeds. Also included is a brief discussion of the static thrust of thin propellers, including the effect of camber on the static thrust."
Date: November 5, 1952
Creator: Gilman, Jean, Jr.
System: The UNT Digital Library
An Investigation of a 0.16-Scale Model of the Douglas X-3 Airplane to Determine Means of Improving the Low-Speed Longitudinal Stability and Control Characteristics (open access)

An Investigation of a 0.16-Scale Model of the Douglas X-3 Airplane to Determine Means of Improving the Low-Speed Longitudinal Stability and Control Characteristics

Report presenting an investigation of a model of the Douglas X-3 to determine some methods to improve the low-speed longitudinal stability and control characteristics. Some of the components tested included plain and slotted leading-edge flaps and plain, split, and slotted trailing-edge flaps. Results regarding the effect of various factors on longitudinal stability and flap characteristics are presented.
Date: November 5, 1952
Creator: McKee, John W. & Riebe, John M.
System: The UNT Digital Library
C pile slug rupture detection system (open access)

C pile slug rupture detection system

This memorandum discusses experimental determination which was made of the sensitivity and operational characteristics of the modified effluent water beta activity monitor system which is to be utilized at C pile for slug rupture detection. The optimum operating conditions for this system were also determined. A comparison of the performance of the C pile system with that of the existing Hanford type beta system was made to establish the degree of improvement realized through system redesign; this information being of assistance to the Pile Physics slug rupture detector development program. This report discusses the performance of both beta sensitive systems and the parameters upon which improved performance depends. A two ionization-chamber mockup of the C pile system was installed in the near effluent water sample room at H pile and utilized in these studies.
Date: November 5, 1952
Creator: Paul, R. S.
System: The UNT Digital Library
The Uranium-Titanium Alloy System (open access)

The Uranium-Titanium Alloy System

Abstract: "A uranium-titanium constitution diagram is presented. There is complete solid solubility between titanium and gamma uranium above about 2100 F. Only one compound exists in the system. It has a hexagonal structure based on U2Ti. It has a fairly wide range of stability, particularly on the titanium side. Beta-titanium solid solution decomposes eutectoidally into alpha titanium and compound at 1150 F. Eutectoid composition is about 72 atomic per cent titanium. Gamma-uranium solid solution decomposes eutectoidally at 1325 F into beta uranium and compound. Eutectoid composition is about 6 atomic per cent titanium. Beta uranium and compound react peritectoidally at 1233 F to give alpha uranium. Solubility of titanium in alpha and beta uranium is low as is the solubility or uranium in alpha titanium."
Date: November 5, 1952
Creator: Udy, Murray C. & Boulger, Francis W.
System: The UNT Digital Library