You limited your search to:

  Partner: UNT Libraries Government Documents Department
 Decade: 1940-1949
 Year: 1945
 Collection: National Advisory Committee for Aeronautics Collection
Addition of heat to a compressible fluid in motion

Addition of heat to a compressible fluid in motion

Date: February 1, 1945
Creator: Hicks, Bruce L
Description: None
Contributing Partner: UNT Libraries Government Documents Department
An additional investigation of the high-speed lateral-control characteristics of spoilers

An additional investigation of the high-speed lateral-control characteristics of spoilers

Date: June 1, 1945
Creator: Summers, James
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Aerodynamic characteristics of a 1/8-scale powered model of a high-speed bomber with a dual pusher propeller aft of the empennage

Aerodynamic characteristics of a 1/8-scale powered model of a high-speed bomber with a dual pusher propeller aft of the empennage

Date: October 12, 1945
Creator: Schnurbusch, Alfred W.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Aerodynamic Characteristics of Four Republic Airfoil Sections from Tests in Langley Two-Dimensional Low-Turbulence Tunnels

Aerodynamic Characteristics of Four Republic Airfoil Sections from Tests in Langley Two-Dimensional Low-Turbulence Tunnels

Date: September 27, 1945
Creator: Klein, Milton M.
Description: Four airfoils sections, designed by the Republic Aviation Corporation for the root and tip sections of the XF-12 airplane, were tested in the Langley two-dimensional low-turbulence tunnels to obtain their aerodynamic characteristics. Lift characteristics were obtained at Reynolds numbers of 3,000,000, 6,000,000, 9,000,000, and 14,000,000, whereas drag characteristics were obtained at Reynolds numbers of 3,000,000, 6,000,000, and 9,000,000. Pressure distributions were obtained for one of the root sections for several angles of attack at a Reynolds number of 2,600,000. Comparison of the root section that appeared best from the tests with the corresponding NACA 65-series section shows the Republic section has a higher maximum lift and higher calculated critical speeds, but a higher minimum drag. In addition, with standard roughness applied to the leading edge, the maximum lift of the Republic airfoil is lower than that of the NACA airfoil. Comparison of the Republic tip section with the corresponding NACA 65-series section shows the Republic airfoil has a lower maximum lift and a higher minimum drag than the NACA airfoil. The calculated critical speeds of the Republic section are slightly higher than those of the NACA section.
Contributing Partner: UNT Libraries Government Documents Department
Air-consumption parameters for automatic mixture control of aircraft engines

Air-consumption parameters for automatic mixture control of aircraft engines

Date: January 1, 1945
Creator: Shames, Sidney J
Description: Data obtained from Navy calibration tests of an 18-cylinder, two-row, radial engine of 3350-cubic-inch displacement and a 14-cylinder, two-row, radial engine of 2600-cubic-inch displacement (carburetor types) were analyzed to show the correlation between the air consumption of these engines and the parameters that evaluate the air consumption from intake-manifold temperature and pressure, exhaust back pressure, and engine speed.
Contributing Partner: UNT Libraries Government Documents Department
Air-flow and performance characteristics of the engine-stage supercharger of a double-row radial aircraft engine I: effect of operating variables

Air-flow and performance characteristics of the engine-stage supercharger of a double-row radial aircraft engine I: effect of operating variables

Date: August 1, 1945
Creator: Mesrobian, John M.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Airspeed fluctuations as a measure of atmospheric turbulence

Airspeed fluctuations as a measure of atmospheric turbulence

Date: July 1, 1945
Creator: Tolefson, H B
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Analysis and modification of theory for impact of seaplanes on water

Analysis and modification of theory for impact of seaplanes on water

Date: January 1, 1945
Creator: Mayo, Wilbur L
Description: An analysis of available theory on seaplane impact and a proposed modification thereto are presented. In previous methods the overall momentum of the float and virtual mass has been assumed to remain constant during the impact but the present analysis shows that this assumption is rigorously correct only when the resultant velocity of the float is normal to the keel. The proposed modification chiefly involves consideration of the fact that forward velocity of the seaplane float causes momentum to be passed into the hydrodynamic downwash (an action that is the entire consideration in the case of the planing float) and consideration of the fact that, for an impact with trim, the rate of penetration is determined not only by the velocity component normal to the keel but also by the velocity component parallel to the keel, which tends to reduce the penetration. Experimental data for planing, oblique impact, and vertical drop are used to show that the accuracy of the proposed theory is good.
Contributing Partner: UNT Libraries Government Documents Department
Analysis and modification of theory for impact of seaplanes on water

Analysis and modification of theory for impact of seaplanes on water

Date: December 1, 1945
Creator: Mayo, Wilbur L
Description: None
Contributing Partner: UNT Libraries Government Documents Department
An analysis of jet-propulsion systems making direct use of the working substance of a thermodynamic cycle

An analysis of jet-propulsion systems making direct use of the working substance of a thermodynamic cycle

Date: February 1, 1945
Creator: Rubert, Kennedy F
Description: None
Contributing Partner: UNT Libraries Government Documents Department
An analysis of life expectancy of airplane wings in normal cruising flight

An analysis of life expectancy of airplane wings in normal cruising flight

Date: January 1, 1945
Creator: Putnam, Abbott A
Description: In order to provide a basis for judging the relative importance of wing failure by fatigue and by single intense gusts, an analysis of wing life for normal cruising flight was made based on data on the frequency of atmospheric gusts. The independent variables considered in the analysis included stress-concentration factor, stress-load relation, wing loading, design and cruising speeds, design gust velocity, and airplane size. Several methods for estimating fatigue life from gust frequencies are discussed. The procedure selected for the analysis is believed to be simple and reasonably accurate, though slightly conservative.
Contributing Partner: UNT Libraries Government Documents Department
An analysis of life expectancy of airplane wings in normal cruising flight

An analysis of life expectancy of airplane wings in normal cruising flight

Date: July 1, 1945
Creator: Putnam, Abbott A
Description: None
Contributing Partner: UNT Libraries Government Documents Department
An analysis of the dissipation of heat in conditions of icing from a section of the wing of the C-46 airplane

An analysis of the dissipation of heat in conditions of icing from a section of the wing of the C-46 airplane

Date: January 1, 1945
Creator: Hardy, J K
Description: A method is given for calculating the temperature that a surface, heated internally by air, will assume in specified conditions of icing. The method can be applied generally to predict the performance, under conditions of icing, of the thermal system for protecting aircraft. Calculations have been made for a section of the wing of the C-46 airplane, and the results agree closely with the temperature measured. The limit of protection when the temperature of the surface reaches 32 degrees F., has been predicted for the leading edge. The temperature of the surface in conditions of icing with air at 0 degree F. also has been calculated. The effect of kinetic heating and the effect of the concentration of free water and size of droplet in the cloud are demonstrated.
Contributing Partner: UNT Libraries Government Documents Department
Analysis of V-G records from the SNJ-4 airplane

Analysis of V-G records from the SNJ-4 airplane

Date: December 1, 1945
Creator: Bennett, S A
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Analysis of wind-tunnel stability and control tests in terms of flying qualities of full-scale airplanes

Analysis of wind-tunnel stability and control tests in terms of flying qualities of full-scale airplanes

Date: January 1, 1945
Creator: Kayten, Gerald G
Description: The analysis of results of wind-tunnel stability and control tests of powered airplane models in terms of the flying qualities of full-scale airplanes is advocated. In order to indicated the topics upon which comments are considered desirable in the report of a wind-tunnel stability and control investigation and to demonstrate the nature of the suggested analysis, the present NACA flying-qualities requirements are discussed in relation to wind-tunnel tests. General procedures for the estimation of flying qualities from wind-tunnel tests are outlined.
Contributing Partner: UNT Libraries Government Documents Department
Analytical investigation of the stability of an F8F dropping model with automatic stabilization

Analytical investigation of the stability of an F8F dropping model with automatic stabilization

Date: December 1, 1945
Creator: Cohen, Doris
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Analytical study of transmission of load from skin to stiffeners and rings of pressurized cabin structure

Analytical study of transmission of load from skin to stiffeners and rings of pressurized cabin structure

Date: October 1, 1945
Creator: Pian, Theodore Hsueh-Huang
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Application of a numerical procedure to stress analysis of stringer-reinforced panels

Application of a numerical procedure to stress analysis of stringer-reinforced panels

Date: March 1, 1945
Creator: Kempner, Joseph
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The application of data on strength under repeated stresses to the design of aircraft

The application of data on strength under repeated stresses to the design of aircraft

Date: October 1945
Creator: Grover, H. J.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
An approximate determination of the power required to move control surfaces as related to control-booster design

An approximate determination of the power required to move control surfaces as related to control-booster design

Date: September 1, 1945
Creator: Johnson, Harold I
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Attainment of a straight-line trajectory for a preset guided missile with special reference to effect of wind or target motion

Attainment of a straight-line trajectory for a preset guided missile with special reference to effect of wind or target motion

Date: August 1, 1945
Creator: Ribner, Herbert S
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Axial fatigue test at two stress amplitudes of 0.032-inch 24S-T sheet specimens with a circular hole

Axial fatigue test at two stress amplitudes of 0.032-inch 24S-T sheet specimens with a circular hole

Date: July 1, 1945
Creator: Brueggeman, W C; Mayer, M , Jr & Smith, W H
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Bearing strengths of 24S-T aluminum alloy plate

Bearing strengths of 24S-T aluminum alloy plate

Date: June 1, 1945
Creator: Moore, R L & Wescoat, C
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Bearing strengths of 75S-T aluminum-alloy sheet and extruded angle

Bearing strengths of 75S-T aluminum-alloy sheet and extruded angle

Date: February 1, 1945
Creator: Wescoat, C & Moore, R L
Description: None
Contributing Partner: UNT Libraries Government Documents Department
FIRST PREV 1 2 3 4 5 NEXT LAST