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An analytical and experimental study of the transient response of a pressure-regulating relief valve in a hydraulic circuit

Description: From Introduction: "This report presents an analysis of the response of the relief valve to sudden flow-demand changes. The analysis can be applied to the design of relief valves to satisfy given response specifications and to predict the stability of the valve in a specific hydraulic circuit. For this reason, derivatives of all the constants employed are included in the report."
Date: March 1954
Creator: Gold, Harold & Otto, Edward W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

NACA Mach Number Warning Device for Use in Flight

Description: Report presenting an instrument for warning the pilot of the approach of the airplane to critical speed conditions. The device closes a contact that completes the electrical circuit of a suitable warning indicators when a predetermined limiting Mach number is approached. It can be used to operate any electrical apparatus through the use of suitable relays.
Date: July 1944
Creator: Goodman, Jerry
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A Hot-Wire Circuit With Very Small Time Lag

Description: A circuit for a hot-wire anemometer for the measurement of fluctuating flow is presented in the present report. The principal elements of the circuit are a Wheatstone bridge, one branch of which is the hot wire; and an electronic amplifier and a current regulator for the brief current which in combination maintain the bridge balance constant. Hence the hot wire is kept at practically constant resistance and temperature, and the time lag caused by thermal inertia of the wire is thereby reduced. … more
Date: February 1943
Creator: Weske, John R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Charts for rapid analysis of 45 degree strain-rosette data

Description: From Summary: "Charts are presented for rapidly determining the principal strains and stresses, the maximum shear strain and stress, and the orientation of principal axes from data on 45 degree strain rosettes. The charts may be used for analyzing the conventional data consisting of strains measured along three gage lines 45 degrees apart, but their application is more direct if the rosette data are obtained by means of special circuits that require the use of four gages 45 degrees apart."
Date: May 1944
Creator: Manson, S. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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