You limited your search to:

  Partner: UNT Libraries Government Documents Department
 Collection: Technical Report Archive and Image Library
Respiratory Protective Devices Approved by the Bureau of Mines as of December 31, 1968: A Revision of Information Circular 8281

Respiratory Protective Devices Approved by the Bureau of Mines as of December 31, 1968: A Revision of Information Circular 8281

Date: 1969
Creator: Schutz, R. H. & Kloos, E. J.
Description: Report issued by the U.S. Bureau of Mines discussing a revision on the breathing devices approved for use in mines and mineral industries. As stated in the abstract, "this publication lists the respiratory protective devices approved by the Bureau of mines as of December 31, 1968, and the names and addresses of their manufacturers" (p. 1). This report includes tables.
Contributing Partner: UNT Libraries Government Documents Department
Response of a helicopter rotor to oscillatory pitch and throttle movements

Response of a helicopter rotor to oscillatory pitch and throttle movements

Date: June 1, 1949
Creator: Carpenter, Paul J & Peitzer, Herbert E
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Response of a Rotating Propeller to Aerodynamic Excitation

Response of a Rotating Propeller to Aerodynamic Excitation

Date: January 21, 1949
Creator: Arnoldi, Walter E.
Description: The flexural vibration of a rotating propeller blade with clamped shank is analyzed with the object of presenting, in matrix form, equations for the elastic bending moments in forced vibration resulting from aerodynamic forces applied at a fixed multiple of rotational speed. Matrix equations are also derived which define the critical speeds end mode shapes for any excitation order and the relation between critical speed and blade angle. Reference is given to standard works on the numerical solution of matrix equations of the forms derived. The use of a segmented blade as an approximation to a continuous blade provides a simple means for obtaining the matrix solution from the integral equation of equilibrium, so that, in the numerical application of the method presented, the several matrix arrays of the basic physical characteristics of the propeller blade are of simple form, end their simplicity is preserved until, with the solution in sight, numerical manipulations well-known in matrix algebra yield the desired critical speeds and mode shapes frame which the vibration at any operating condition may be synthesized. A close correspondence between the familiar Stodola method and the matrix method is pointed out, indicating that any features of novelty are characteristic not ...
Contributing Partner: UNT Libraries Government Documents Department
The response of an airplane to random atmospheric disturbances

The response of an airplane to random atmospheric disturbances

Date: January 1, 1958
Creator: Diederich, Franklin W
Description: The statistical approach to the gust-load problem, which consists in considering flight through turbulent air to be a stationary random process, is extended by including the effect of lateral variation of the instantaneous gust intensity on the aerodynamic forces. The forces obtained in this manner are used in dynamic analyses of rigid and flexible airplanes free to move vertically, in pitch, and in roll. The effect of the interaction of longitudinal, normal, and lateral gusts on the wind stresses is also considered.
Contributing Partner: UNT Libraries Government Documents Department
The response of an airplane to random atmospheric disturbances

The response of an airplane to random atmospheric disturbances

Date: April 1, 1957
Creator: Diederich, Franklin W
Description: The statistical approach to the gust-load problem which consists in considering flight through turbulent air to be a stationary random process is extended by including the effect of lateral variation of the instantaneous gust intensity on the aerodynamic forces. The forces obtained in this manner are used in dynamic analyses of rigid and flexible airplanes free to move vertically, in pitch, and in roll. The effect of the interaction of longitudinal, vertical, and lateral gusts on the wing stresses is also considered.
Contributing Partner: UNT Libraries Government Documents Department
Response of Deep Two-Way-Reinforced and Unreinforced Concrete Slabs to Static and Dynamic Loading, Report 3: Static Tests of Deep Slabs Having a Span-to-Thickness Ratio of 4.12

Response of Deep Two-Way-Reinforced and Unreinforced Concrete Slabs to Static and Dynamic Loading, Report 3: Static Tests of Deep Slabs Having a Span-to-Thickness Ratio of 4.12

Date: November 1969
Creator: Cole, K. M.; Albritton, Gayle E. & Beavers, James E.
Description: Partial abstract: "The objective of the investigation reported herein was to obtain laboratory response data for deep, two-way-reinforced and plain concrete slabs subjected to static overpressures in order to determine the response analysis necessary to analyze the target vulnerability of such structures under both active and passive defense situations" (p. 4).
Contributing Partner: UNT Libraries Government Documents Department
Response of Dual-Purpose Reinforced-Concrete Mass Shelter

Response of Dual-Purpose Reinforced-Concrete Mass Shelter

Date: September 15, 1962
Creator: Cohen, Edward; Laing, E. & Bottenhofer, A.
Description: ...
Contributing Partner: UNT Libraries Government Documents Department
Response of helicopter rotors to periodic forces

Response of helicopter rotors to periodic forces

Date: March 1, 1945
Creator: Kelley, Bartram
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Response of homogeneous and two-material laminated cylinders to sinusoidal environmental temperature change, with applications to hot-wire anemometry and thermocouple pyrometry

Response of homogeneous and two-material laminated cylinders to sinusoidal environmental temperature change, with applications to hot-wire anemometry and thermocouple pyrometry

Date: September 1, 1955
Creator: Lowell, Herman H & Patton, Norman
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The response of pressure measuring systems to oscillating pressures

The response of pressure measuring systems to oscillating pressures

Date: February 1, 1949
Creator: Taback, Israel
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Response of Protective Vaults to Blast Loading

Response of Protective Vaults to Blast Loading

Date: May 28, 1962
Creator: Cohen, Edward; Laing, E. & Bottenhofer, A.
Description: ...
Contributing Partner: UNT Libraries Government Documents Department
Response to Secondary Antigenic Stimulus After Whole Body X-Irradiation in the Beagle

Response to Secondary Antigenic Stimulus After Whole Body X-Irradiation in the Beagle

Date: September 1964
Creator: Pindak, F. F.; Stara, J. F.; Clapper, W. E. & Clapper, W. E.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Restraint Provided a Flat Rectangular Plate by a Sturdy Stiffener Along an Edge of the Plate

Restraint Provided a Flat Rectangular Plate by a Sturdy Stiffener Along an Edge of the Plate

Date: January 1, 1942
Creator: Lundquist, Eugene E & Stowell, Elbridge Z.
Description: A sturdy stiffener is defined as a stiffener of such proportions that it does not suffer cross-sectional distortion when moments are applied to some part of the cross section. When such a stiffener is attached to one edge of a plate, it will resist rotation of that edge of the plate by means of its torsional properties. A formula is given for the restraint coefficient provided the plate by such a stiffener. This coefficient is required for the calculation of the critical compressive stress of the plate.
Contributing Partner: UNT Libraries Government Documents Department
Restraint Provided a Flat Rectangular Plate by a Sturdy Stiffener Along an Edge of the Plate, Special Report

Restraint Provided a Flat Rectangular Plate by a Sturdy Stiffener Along an Edge of the Plate, Special Report

Date: May 1, 1941
Creator: Lundquist, Eugene E. & Stowell, Elbridge Z.
Description: A sturdy stiffener is defined as a stiffener of such proportions that it does not suffer cross-sectional distortion when moments are applied to some part of the cross section. When such a stiffener is attached to one edge of a plate, it will resist rotation of that edge of the plate by means of its torsional properties. A formula is given for the restraint coefficient provided the plate by such a stiffener. This coefficient is required for the calculation of the critical compressive stress of the plate.
Contributing Partner: UNT Libraries Government Documents Department
A restricted list of aircraft materials research projects

A restricted list of aircraft materials research projects

Date: May 4, 1948
Creator: unknown
Description: This report contains a selected list of Government sponsored research projects on related aircraft materials in effect during the calendar year 1947. Information is contained on titles, description, sponsoring and conducting agencies.
Contributing Partner: UNT Libraries Government Documents Department
Results obtained during accelerated transonic tests of the Bell XS-1 airplane in flights to a Mach number of 0.92

Results obtained during accelerated transonic tests of the Bell XS-1 airplane in flights to a Mach number of 0.92

Date: April 19, 1948
Creator: Drake, Hubert M; Mclaughlin, Milton D & Goodman, Harold R
Description: Results are presented of tests up to a Mach number of 0.92 at altitudes around 30,000 feet. The data obtained show that the airplane can be flown to this Mach number above 30,000 feet. Longitudinal trim changes have been experienced but the forces involved have been small. The elevator effectiveness decreased about one-half with increase of Mach number from 0.70 to 0.87. Buffeting has been experienced in level flight but it has been mild and the associated tail loads have been small. No aileron buzz or other flutter phenomena have been noted.
Contributing Partner: UNT Libraries Government Documents Department
Results obtained during extension of U.S. Air Force transonic-flight tests of XS-1 airplane

Results obtained during extension of U.S. Air Force transonic-flight tests of XS-1 airplane

Date: November 16, 1948
Creator: Goodman, Harold R & Drake, Hubert M
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Results obtained during flights 1 to 6 of the Northrop X-4 airplane (A.F. no. 46-677)

Results obtained during flights 1 to 6 of the Northrop X-4 airplane (A.F. no. 46-677)

Date: January 12, 1950
Creator: Matthews, James T , Jr
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Results obtained from second flight of X-4 airplane (A.F. no. 46-676)

Results obtained from second flight of X-4 airplane (A.F. no. 46-676)

Date: July 18, 1949
Creator: Williams, Walter C
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Results Obtained from Third Flight of Northrop X-4 Airplane (A.F. No. 46-676)

Results Obtained from Third Flight of Northrop X-4 Airplane (A.F. No. 46-676)

Date: September 9, 1949
Creator: Williams, Walter C
Description: NACA instrumentation has been installed in the Northrop X-4 airplane to obtain stability and control data during the Northrop conducted acceptance tests. The results o. the third flight of the X- ll. number 1 airplane are presented in this paper. The results of this flight showed that the directional stability as measured in steadily increasing sideslips was positive and high and that the lateral stability was positive.
Contributing Partner: UNT Libraries Government Documents Department
Results of a Biological Reconnaissance of the Yukon River Region

Results of a Biological Reconnaissance of the Yukon River Region

Date: October 6, 1900
Creator: Osgood, Wilfred H. & Bishop, Louis B.
Description: Brief summary of the Yukon River region, including itinerary of expedition, faunal districts, new species identified, and mammals and birds present.
Contributing Partner: UNT Libraries Government Documents Department
Results of a Biological Reconnoissance of South-Central Idaho

Results of a Biological Reconnoissance of South-Central Idaho

Date: July 30, 1891
Creator: Merriam, C. Hart & Stejneger, Leonhard
Description: Brief summary of south-central Idaho, including descriptions of subregions, mammals, birds, and reptiles.
Contributing Partner: UNT Libraries Government Documents Department
Results of a Biological Survey of Mount Shasta California

Results of a Biological Survey of Mount Shasta California

Date: October 28, 1899
Creator: Merriam, C. Hart
Description: From introduction: "Biological survey of northern California from the Madeline Plains to the Pacific Ocean and from the Oregon boundary to Lassen Butte and parts of the Sierra, with Mount Shasta occupying a nearly central position."
Contributing Partner: UNT Libraries Government Documents Department
Results of a Biological Survey of the San Francisco Mountain Region and Desert of the Little Colorado, Arizona

Results of a Biological Survey of the San Francisco Mountain Region and Desert of the Little Colorado, Arizona

Date: September 11, 1890
Creator: Merriam, C. Hart & Stejneger, Leonhard
Description: Brief summary of a biological survey of the Painted Desert, specifically the San Francisco Mountain region, and the Grand Canyon (Cañon).
Contributing Partner: UNT Libraries Government Documents Department