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 Decade: 1940-1949
 Year: 1943
 Month: March
 Collection: National Advisory Committee for Aeronautics Collection
Air-flow surveys in the region of the tail surfaces of a single-engine airplane equipped with dual-rotating propellers

Air-flow surveys in the region of the tail surfaces of a single-engine airplane equipped with dual-rotating propellers

Date: March 1, 1943
Creator: Sweberg, Harold H
Description: None
Contributing Partner: UNT Libraries Government Documents Department
A correlation of the dimensions, proportions, and loadings of existing seaplane floats and flying boat hulls

A correlation of the dimensions, proportions, and loadings of existing seaplane floats and flying boat hulls

Date: March 1943
Creator: Locke, Fred W S , Jr
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Determination of Flight Paths of an SBD-1 Airplane in Simulated Diving Attacks, Special Report

Determination of Flight Paths of an SBD-1 Airplane in Simulated Diving Attacks, Special Report

Date: March 1, 1943
Creator: Johnson, Harold I.
Description: An investigation has been made to determine the motions of and the flight paths describe by a Navy dive-bombing airplane in simulated diving attacks. The data necessary to evaluate these items, with the exception of the atmospheric wind data, were obtained from automatic recording instruments installed entirely within the airplane. The atmospheric wind data were obtained from the ground by the balloon-theodolite method. The results of typical dives at various dive angles are presented in the form of time histories of the motion of the airplane as well as flight paths calculated with respect to still air and with respect to the ground.
Contributing Partner: UNT Libraries Government Documents Department
The effect of altitude on cooling

The effect of altitude on cooling

Date: March 1, 1943
Creator: Wood, George P
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Effect of carburetor-mixture-control and supercharger characteristics on fuel knock under simulated sea-level flight conditions

Effect of carburetor-mixture-control and supercharger characteristics on fuel knock under simulated sea-level flight conditions

Date: March 1, 1943
Creator: Wear, Jerrold D
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The effect of spinner-body gap on the pressures available for cooling in the NACA E-type cowling

The effect of spinner-body gap on the pressures available for cooling in the NACA E-type cowling

Date: March 1, 1943
Creator: Mattson, Axel T
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Effects of prior fatigue-stressing of the impact resistance of chromium-molybdenum aircraft steel

Effects of prior fatigue-stressing of the impact resistance of chromium-molybdenum aircraft steel

Date: March 1, 1943
Creator: Kies, J A & Holshouser, W L
Description: None
Contributing Partner: UNT Libraries Government Documents Department
An investigation of aircraft heaters IX : measured and predicted performance of two exhaust gas-air heat exchangers and an apparatus for evaluating exhaust gas-air heat exchangers

An investigation of aircraft heaters IX : measured and predicted performance of two exhaust gas-air heat exchangers and an apparatus for evaluating exhaust gas-air heat exchangers

Date: March 1, 1943
Creator: Boelter, L. M. K.; Miller, M. A.; Sharp, W. H.; Morrin, E. H.; Iversen, H. W. & Mason, W. E.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
An investigation of aircraft heaters VIII : a simplified method for the calculation of the unit thermal conductance over wings

An investigation of aircraft heaters VIII : a simplified method for the calculation of the unit thermal conductance over wings

Date: March 1943
Creator: Boelter, L. M. K.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
An investigation of aircraft heaters X : measured and predicted performance of a fluted-type exhaust gas and air heat exchanger

An investigation of aircraft heaters X : measured and predicted performance of a fluted-type exhaust gas and air heat exchanger

Date: March 1943
Creator: Morrin, E. H.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Investigation of the longitudinal stability at high speeds of a 1/5-scale model of a tailless pursuit airplane

Investigation of the longitudinal stability at high speeds of a 1/5-scale model of a tailless pursuit airplane

Date: March 3, 1943
Creator: Laitone, Edmund V
Description: None
Contributing Partner: UNT Libraries Government Documents Department
A method for studying piston friction

A method for studying piston friction

Date: March 1943
Creator: Taylor, E. S.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
A simplified chart for determining Mach number and true airspeed from airspeed-indicator readings

A simplified chart for determining Mach number and true airspeed from airspeed-indicator readings

Date: March 1, 1943
Creator: Ritchie, Virgil S
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Tests of a dynamic model in NACA tank number 1 to determine the effect of length of afterbody, angle of afterbody keel, gross load, and a pointed step on landing and planning stability

Tests of a dynamic model in NACA tank number 1 to determine the effect of length of afterbody, angle of afterbody keel, gross load, and a pointed step on landing and planning stability

Date: March 1, 1943
Creator: Lina, Lindsay J
Description: None
Contributing Partner: UNT Libraries Government Documents Department
A theoretical investigation of the lateral oscillations of an airplane with free rudder with special reference to the effect of friction

A theoretical investigation of the lateral oscillations of an airplane with free rudder with special reference to the effect of friction

Date: March 1, 1943
Creator: Sternfield, Leonard
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Time-velocity-altitude relations for an airplane diving in a standard atmosphere

Time-velocity-altitude relations for an airplane diving in a standard atmosphere

Date: March 1, 1943
Creator: Pearson, H A
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Torsion of flanged members with cross sections restrained against warping

Torsion of flanged members with cross sections restrained against warping

Date: March 1, 1943
Creator: Hill, H N
Description: The longitudinal stresses and the stiffness of flange members - I-beams, channels, and Z-bars - were investigated when these members were subjected to torque with constraint against cross-sectional warping. Measured angles of rotation agreed with corresponding calculated values in which the torsion bending factor of the cross section was involved; the agreement was better for the I-beam and the Z-bar than for the channel. Longitudinal stresses measured at the mid-span were found to agree with the calculated values that involved unit warping as well as the torsion-bending factors: the channel showed the greatest discrepancy between measured and calculated values. When commonly given expressions for rotations and maximum longitudinal stresses in a twisted I-beam were applied to the channel and to the Z-bar, values were obtained that were in reasonably good agreement with values obtained by the method of torsion-bending constant and unit warping.
Contributing Partner: UNT Libraries Government Documents Department
Transition between laminar and turbulent flow by transverse contamination

Transition between laminar and turbulent flow by transverse contamination

Date: March 1, 1943
Creator: Charters, Alex C , Jr
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Turbulent flow between rotating cylinders

Turbulent flow between rotating cylinders

Date: March 1, 1943
Creator: Shih-I, Pai
Description: The turbulent air flow between rotating cylinders was investigated. The distributions of mean speed and of turbulence were measured in the gap between a rotating inner and a stationary outer cylinder. The measurements led to the conclusion that the turbulent flow in the gap cannot be considered two dimensional, but that a particular type of secondary motion takes place. It is shown that the experimentally found velocity distribution can be fully understood under the assumption that this secondary motion consists of three-dimensional ring-shape vortices. The vortices occur only in pairs, and their number and size depend on the speed of the rotating cylinder; the number was found to decrease with increasing speed. The secondary motion has an essential part in the transmission of the moment of momentum. In regions where the secondary motion is negligible, the momentum transfer follows the laws known for homologous turbulence. Ring-shape vortices are known to occur in the laminar flow between rotating cylinders, but it was hitherto unknown that they exist even at speeds that are several hundred times the critical limit.
Contributing Partner: UNT Libraries Government Documents Department
Wind-tunnel investigation of trimming tabs on a thickened and beveled aileron on a tapered low-drag wing

Wind-tunnel investigation of trimming tabs on a thickened and beveled aileron on a tapered low-drag wing

Date: March 1, 1943
Creator: Crandall, Stewart M
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Wind-tunnel tests of two tapered wings with straight trailing edges and with constant-chord center sections of different spans

Wind-tunnel tests of two tapered wings with straight trailing edges and with constant-chord center sections of different spans

Date: March 1, 1943
Creator: Neely, Robert H
Description: None
Contributing Partner: UNT Libraries Government Documents Department
XC-35 gust research project preliminary analysis of the lateral distribution of gust velocity along the span of an airplane

XC-35 gust research project preliminary analysis of the lateral distribution of gust velocity along the span of an airplane

Date: March 1, 1943
Creator: Moskovitz, A I
Description: None
Contributing Partner: UNT Libraries Government Documents Department