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185
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119
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36
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22
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The Brady Handgun Control Act: Constitutional Issues
The Brady Handgun Control Act established a five-day waiting period for handgun purchases, during which local law enforcement can make reasonable efforts to conduct background checks in available records and block and sales to convicted felons and other disqualified persons. This report reviews the background of federal gun control legislation, analyzes the conflict in the courts over the constitutionality under the Tenth Amendment of the duties placed on local law enforcement, and considers the implications of the decisions for Brady Act enforcement.
Date:
October 25, 1995
Creator:
Schrader, Dorothy
System:
The UNT Digital Library
Iraq-Kuwait: United Nations Security Council Resolutions Test and Votes -- 1991
This report lists the 12 adopted United Nations Security Council resolutions relating to the Iraq-Kuwait situation through October 1991. The texts of these resolutions, along with the votes by members of the Council, are included in this report.
Date:
October 25, 1991
Creator:
Browne, Marjorie Ann
System:
The UNT Digital Library
Agricultural Disaster Assistance
This report has two sections. The first provides an overview of the current U.S. Department of Agriculture (USDA) disaster assistance programs: federal crop insurance, NAP payments, emergency disaster loans, the new Supplemental Revenue Assistance Payments Program (SURE), and four other smaller disaster programs authorized in the 2008 farm bill. The second section reviews the recent history of emergency supplemental farm disaster assistance.
Date:
October 25, 2010
Creator:
Shields, Dennis A. & Chite, Ralph M.
System:
The UNT Digital Library
Presidential Appointments to Full-Time Positions on Regulatory and Other Collegial Boards and Commissions, 110th Congress
This report specifies, for the 110th Congress, all presidential nominations to full-time positions on 34 regulatory and other collegial boards and commissions. Profiles of each board and commission provide information on their organizational structures, membership as of the end of the 110th Congress, and appointment activity during that Congress. The report also includes tables summarizing the collective appointment activity for all 34 bodies, and identifying Senate recesses during the 110th Congress.
Date:
October 25, 2010
Creator:
Hogue, Henry B. & Bearden, Maureen
System:
The UNT Digital Library
Conventional Prompt Global Strike and Long-Range Ballistic Missiles: Background and Issues
Prompt global strike (PGS) would allow the United States to strike targets anywhere on earth with conventional weapons in as little as an hour. This report provides an overview of the rationale for the PGS mission and the possible deployment of conventional warheads on long-range ballistic missiles in support of this mission. It then reviews the Air Force and Navy efforts to develop these systems. It summarizes congressional reaction to these proposals, then provides a more detailed account of the issues raised by these concepts and programs.
Date:
October 25, 2010
Creator:
Woolf, Amy F.
System:
The UNT Digital Library
Wind-Tunnel Investigation of Mutual Interference Loads on a Supersonic Bomber Configuration and Store During Separation at Mach Numbers of 1.57, 1.77, and 2.01
Report discussing an investigation into the mutual interference loads on a supersonic bomber configuration and store during separation of the store. Tests were performed at several airplane angles of attack, store angles of attack, and airplane sidestep angles. The aerodynamic characteristics of the various components and coefficients of forces are provided in tables.
Date:
October 25, 1957
Creator:
Morris, Owen G. & Turner, Kenneth L.
System:
The UNT Digital Library
The Subsonic Lateral and Longitudinal Static Stability Characteristics Up to Large Angles of Sideslip for a Triangular-Wing Airplane Model Having a Ventral Fin
"Wind-tunnel tests were conducted to determine the effects of a ventral fin on the static characteristics of a triangular-wing airplane model. Data were obtained for angles of sideslip up to 18 degrees at angles of attack of 0, 6, 12, and 18 degrees at Mach numbers from 0.25 to 0.94. The results of the tests indicated that the ventral fin did not produce as much yawing moment per unit of exposed area at any angle of sideslp as the vertical tail" (p. 1).
Date:
October 25, 1956
Creator:
Buell, Donald A. & Tinling, Bruce E.
System:
The UNT Digital Library
Wind-Tunnel Tests of a Series of Practice Bombs
Report discussing zero-lift drag data for several bomb configurations at various Mach numbers. Seven configurations were tested with different combinations of interchangeable noses and tail cones with fins, some with different surface conditions. Surface conditions were not found to affect the drag, but the thickness of the tail fins and shape of the noses did change the shape of the drag curve.
Date:
October 25, 1957
Creator:
Ward, Donald H.
System:
The UNT Digital Library
Investigation of a Two-Step Nozzle in an 11-Inch Hypersonic Tunnel
Report discussing flow surveys made of several nozzles using two 2-dimensional steps at Mach number 6.98. Results regarding wall-pressure surveys, disturbance patterns in expansion, total-pressure survey, temperature recovery, and general nozzle characteristics are provided.
Date:
October 25, 1949
Creator:
McLellan, Charles H.; Williams, Thomas W. & Bertram, Mitchel H.
System:
The UNT Digital Library
Comparison of large scale flight measurements of zero lift drag at Mach numbers from 0.9 to 1.7 of two wing-body combinations having similar 60 degree triangular wings with NACA 65A003 sections
Report presenting an investigation of zero-lift drag of a fin-stabilized wing-body combination made at high-subsonic and supersonic speeds in a range of Reynolds numbers. The data are presented with that from a wingless body and similar winged body with a slightly different ratio of body frontal area to wing area. Results regarding total drag and wing-plus-interference drag are provided.
Date:
October 25, 1950
Creator:
Schult, Eugene D.
System:
The UNT Digital Library
Flight measurements of the lateral control characteristics of narrow-chord ailerons on the trailing edge of a full-span slotted flap
From Summary: "Results are presented of light tests made to determine the effect of flap deflection on the lateral control characteristics of a modified Brewster F2A-2 airplane equipped with partial-span narrow-chord ailerons on the trailing edge of a full-span NACA slotted flap. The investigation included determination of the rolling and yawing characteristics of the airplane in abrupt aileron rolls with the slotted flap at various settings ranging from 0 degree to about 40 degrees. The results showed that the effectiveness of the ailerons was greatly reduced at flap deflections greater than about 20 degrees. For flap deflections up to about 20 degrees, the aileron effectiveness was about the same as with flaps retracted, but the adverse yawing velocity developed in the abrupt aileron rolls was somewhat increased."
Date:
October 25, 1946
Creator:
Sawyer, Richard H.
System:
The UNT Digital Library
A vector study of linearized supersonic flow applications to nonplanar problems
A vector study of the partial-differential equation of steady linearized supersonic flow is presented. General expressions which relate the velocity potential in the stream to the conditions on the disturbing surfaces, are derived. In connection with these general expressions the concept of the finite part of an integral is discussed. A discussion of problems dealing with planar bodies is given and the conditions for the solution to be unique are investigated. Problems concerning nonplanar systems are investigated, and methods are derived for the solution of some simple nonplanar bodies. The surface pressure distribution and the damping in roll are found for rolling tails consisting of four, six, and eight rectangular fins for the Mach number range where the region of interference between adjacent fins does not affect the fin tips.
Date:
October 25, 1951
Creator:
Martin, John C.
System:
The UNT Digital Library
Performance of Air-Launched T-40 Rocket Motors with Two Types of Igniter
Air-launched firings of eight T-40 rockets have been made. An average total impulse of 22,870 pound-seconds was observed for four of the rounds mounted in cone-cylinder vehicles. Maximum velocities of over 5000 feet per second were observed for two of the rounds with approximately 70-pound pay loads.
Date:
October 25, 1954
Creator:
Disher, J. H.
System:
The UNT Digital Library
Free-Flight Investigation at Transonic and Supersonic Speeds of the Rolling Effectiveness of a 42.7 Degree Sweptback Wing Having Partial-Span Ailerons
An investigation of the rolling effectiveness at transonic and supersonic speeds of partial-span ailerons on a 42.7 degree sweptback wing having symmetrical circular-arc airfoil sections of 10-percent thickness ratio normal to the wing quarter-chord line has been made by means of rocket-propelled test vehicles. The results are compared with results of a supersonic wind-tunnel test at Mach number 1.9.
Date:
October 25, 1948
Creator:
Sandahl, Carl A.
System:
The UNT Digital Library
NACA Transonic Wing-Tunnel Test Sections
Memorandum presenting an approximate subsonic theory developed for the solid blockage interference in circular wind tunnels with walls slotted in the direction of flow. The theory indicated the possibility of obtaining zero blockage interference. Tests in a circular slotted tunnel based on the theory confirmed the theoretical predictions.
Date:
October 25, 1948
Creator:
Wright, Ray H. & Ward, Vernon G.
System:
The UNT Digital Library
Effect of plug design on performance characteristics of convergent-plug exhaust nozzles
Report presenting an evaluation of the internal performance characteristics of several plug-type nozzles over a range of pressure ratios from 1.5 to 30. Results regarding isentropic plug nozzles, conical plug nozzles, the effect of throat and throat-approach section on performance, and air-flow parameter are provided.
Date:
October 25, 1954
Creator:
Krull, H. George & Beale, William T.
System:
The UNT Digital Library
Drag data for 16-inch-diameter ram-jet engine with double-cone inlet in free flight at Mach numbers from 0.7 to 1.8
Report presenting an investigation of air-launched ram jets using models with double-cone inlets with a design free-stream Mach number of 2.4. Drag data are presented in the form of cowl pressure drag, additive drag, internal drag, base drag, and total drag. Mass-flow ratios and ram-jet total-temperature ratios are also provided.
Date:
October 25, 1954
Creator:
Jones, Merle L.; Rabb, Leonard & Simpkins, Scott H.
System:
The UNT Digital Library
Investigation of three highly loaded subsonic-inlet-stage axial-flow compressors employing varying radial gradients of energy addition
Report presenting an investigation of three axial-flow-compressor inlet stages with a hub-tip diameter ratio of 0.5 to determine whether high pressure ratios can be obtained by means of high turning with highly cambered subsonic types of blading and the effectiveness of radial gradients of energy addition in reducing the deceleration across the rotor tip and thus relieving the effect of high tip loading. Results regarding the overall stage performance, diffusion factor, element performance, and stage discharge flow distribution are provided.
Date:
October 25, 1954
Creator:
Standahar, Raymond M.
System:
The UNT Digital Library
Analytical determination of effect of turbine cooling-air-impeller performance on engine performance and comparison of experimentally determined performance of impellers with and without inducer vanes
Report presenting an analytical and experimental investigation of the effects of cooling-air impeller performance on turbojet-engine performance at 70 and 100 percent of rated engine speed. Analysis indicated that the impeller performance has little effect on engine performance at rated engine speed for the coolant flows considered. Results regarding the impeller total-pressure ratio and cooling air available with compressor bleed are provided.
Date:
October 25, 1954
Creator:
Schafer, Louis J., Jr. & Hickel, Robert O.
System:
The UNT Digital Library
Flight measurements of the low-speed characteristics of a 35 degree swept-wing airplane with blowing-type boundary-layer control in the trailing-edge flaps
Report presenting tests to determine the flight characteristics of an F-86 airplane equipped with a blowing-type boundary-layer-control installation on the trailing-edge flaps. The effectiveness of the flap was determined in conjunction with slatted leading edges and an inflatable rubber boot on the leading edge. Measurements were made of lift, drag, flow requirements, and computations for take-off, climb, and landing.
Date:
October 25, 1956
Creator:
Anderson, Seth B.; Quigley, Hervey C. & Innis, Robert C.
System:
The UNT Digital Library
The Subsonic Lateral and Longitudinal Static Stability Characteristics Up to Large Angles of Sideslip for a Triangular-Wing Airplane Model Having a Ventral Fin
"Wind-tunnel tests were conducted to determine the effects of a ventral fin on the static characteristics of a triangular-wing airplane model. Data were obtained for angles of sideslip up to 18 degrees at angles of attack 0, 6, 12, and 18 degrees at Mach numbers from 0.25 to 0.94. The results of the tests indicated that the ventral fin did not produce as much yawing moment per unit of exposed area at any angle of sideslip as the vertical tail" (p. 1).
Date:
October 25, 1956
Creator:
Buell, Donald A. & Tinling, Bruce E.
System:
The UNT Digital Library
Preliminary Report of Experimental Investigation of Ram-Jet Controls and Engine Dynamics
Report presenting the results of an investigation of the internal dynamics of a ramjet engine and the steady-state and dynamic performance characteristics of a number of ramjet controls. Three types of engine control systems were investigated: (1) shock positioning, (2) direct control of diffuser-exit pressure, and (3) an optimalizing control designed to obtain peak pressure recovery from the diffuser. Results regarding the engine steady-state performance, engine dynamics, and controls investigations are provided.
Date:
October 25, 1954
Creator:
Vasu, G.; Wilcox, F. A. & Himmel, S. C.
System:
The UNT Digital Library
The Effect of External Stiffening Ribs on the Rolling Power of Ailerons on a Swept Wing
Report presenting an investigation to determine the effects of external ribs, or load carrying fences, on the rolling effectiveness and drag on swept wings of two different stiffnesses. The primary effect of adding fences was a decrease in torsional flexibility and an increase in zero-lift rolling effectiveness. The aerodynamic effects on zero-lift rolling effectiveness due to adding fences are negligible.
Date:
October 25, 1956
Creator:
Stephens, Emily W.
System:
The UNT Digital Library
An experimental study of the zero-angle-of attack transonic drag associated with the vertical position of a horizontal tail at zero incidence
Report presenting a study of the transonic drag associated with varying the vertical location of the horizontal tail of a representative tail-body combination. Factors which significantly influenced the results were flow separation in the horizontal tail-body juncture, afterbody-tail-interference pressure drag, and a downwash over the horizontal tail which resulted from the boundary conditions of the converging afterbody.
Date:
October 25, 1956
Creator:
Howell, Robert R.
System:
The UNT Digital Library