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  Partner: UNT Libraries Government Documents Department
 Serial/Series Title: NACA Restricted Bulletin
 Collection: National Advisory Committee for Aeronautics Collection
The Effect of Artificial Aging on the Tensile Properties of Alclad 24S-T and 24S-T Aluminum Alloy

The Effect of Artificial Aging on the Tensile Properties of Alclad 24S-T and 24S-T Aluminum Alloy

Date: August 1, 1943
Creator: Kotanchik, Joseph N.; Woods, Walter & Zender, George W.
Description: An experimental study was made to determine the effect of artificial aging on the tensile properties of alclad 24S-T and 24S-T aluminum-alloy sheet material. The results of the tests show that certain combinations of aging time and temperature cause a marked increase in the yield strength and a small increase in the ultimate strength; these increases are accompanied by a very large decrease in elongation. A curve is presented that shows the maximum yield strengths that can be obtained by aging this material at various combinations of time and temperature. The higher values of yield stress are obtained in material aged at relatively longer times and lower temperatures.
Contributing Partner: UNT Libraries Government Documents Department
Effect of Changes in Aileron Rigging on the Stick Forces of a High-Speed Fighter Airplane

Effect of Changes in Aileron Rigging on the Stick Forces of a High-Speed Fighter Airplane

Date: May 1, 1944
Creator: Murray, Harry E. & Warren, S Anne
Description: The effects of changes in aileron rigging between 2 deg up and 2 deg down on the stick forces were determined from wind-tunnel data for a finite-span wing model. These effects were investigated for ailerons deflecting equally in both directions and linearly with stick deflection. Data were analyzed for a Frise, a sealed internally balanced, and a beveled-trailing-edge aileron. The results of the analysis showed that only ailerons having linear hinge-moment characteristics are unaffected by changes in rigging and indicated that ailerons having decidedly nonlinear hinge-moment-coefficient curves, particularly for deflections near 0 deg, are very sensitive to changes in rigging.
Contributing Partner: UNT Libraries Government Documents Department
Effect of inlet-air temperature and cylinder displacement on charge temperature of internal combustion engines

Effect of inlet-air temperature and cylinder displacement on charge temperature of internal combustion engines

Date: January 1, 1944
Creator: Bolz, Ray E
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Effect of lateral shift of center of gravity on rudder deflection required for trim

Effect of lateral shift of center of gravity on rudder deflection required for trim

Date: November 1, 1944
Creator: Hunter, P A
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The effect of oil consumption and piston cooling on knock-limited aircraft-engine performance

The effect of oil consumption and piston cooling on knock-limited aircraft-engine performance

Date: May 1, 1944
Creator: Richard, Paul H
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Effect of powered propellers on the aerodynamic characteristics and the porpoising stability of a dynamic model of a long-range flying boat

Effect of powered propellers on the aerodynamic characteristics and the porpoising stability of a dynamic model of a long-range flying boat

Date: May 1, 1943
Creator: Land, Norman S
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Effect of variation in diameter and pitch of rivets on compressive strength of panels with Z-section stiffeners I : panels with close stiffener spacing that fail by local buckling

Effect of variation in diameter and pitch of rivets on compressive strength of panels with Z-section stiffeners I : panels with close stiffener spacing that fail by local buckling

Date: August 1, 1945
Creator: Hickman, William A
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Effect of varying percentages of exhaust gas on engine performance

Effect of varying percentages of exhaust gas on engine performance

Date: April 1, 1943
Creator: Barnett, Henry C
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Effects of compressibility and large angles of yaw on pressure indicated by a total-pressure tube

Effects of compressibility and large angles of yaw on pressure indicated by a total-pressure tube

Date: April 1, 1945
Creator: Humphreys, Milton D
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Effects of fuel-vapor loss on knock-limited performance and inspection properties of aviation fuels

Effects of fuel-vapor loss on knock-limited performance and inspection properties of aviation fuels

Date: March 1, 1946
Creator: Marsh, Edred T
Description: None
Contributing Partner: UNT Libraries Government Documents Department
An electronic indicator for angular velocity and acceleration

An electronic indicator for angular velocity and acceleration

Date: August 1, 1944
Creator: Krebs, Richard P
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Emergency measures for increasing the range of fighter airplanes

Emergency measures for increasing the range of fighter airplanes

Date: May 1, 1943
Creator: Wetmore, Joseph W
Description: None
Contributing Partner: UNT Libraries Government Documents Department
End-zone water injection as a means of suppressing knock in a spark-ignition engine

End-zone water injection as a means of suppressing knock in a spark-ignition engine

Date: September 1, 1944
Creator: Miller, Cearcy D
Description: None
Contributing Partner: UNT Libraries Government Documents Department
An estimation of the internal-cooling requirements of an aircraft-engine cylinder when using oxygen boost

An estimation of the internal-cooling requirements of an aircraft-engine cylinder when using oxygen boost

Date: November 1, 1944
Creator: Moeckel, W E
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Flight investigation at high Mach numbers of several methods of measuring static pressure on an airplane wing

Flight investigation at high Mach numbers of several methods of measuring static pressure on an airplane wing

Date: November 1, 1944
Creator: Daum, Fred L
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Flight tests of a glider model towed by twin parallel towlines

Flight tests of a glider model towed by twin parallel towlines

Date: April 1, 1943
Creator: Mckinney, Marion O , Jr
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Fuel-evaporation loss as determined by the change in the specific gravity of the fuel in an aircraft fuel tank

Fuel-evaporation loss as determined by the change in the specific gravity of the fuel in an aircraft fuel tank

Date: May 1, 1945
Creator: Kramer, Walter E
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Heat-capacity lag in turbine-working fluids

Heat-capacity lag in turbine-working fluids

Date: May 1, 1944
Creator: Huber, Paul W
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Investigation of methods of supporting single-thickness specimens in a fixture for determination of compressive stress-strain curves

Investigation of methods of supporting single-thickness specimens in a fixture for determination of compressive stress-strain curves

Date: May 1, 1945
Creator: Weinberger, Robert A
Description: None
Contributing Partner: UNT Libraries Government Documents Department
An investigation of the characteristics of a propeller alcohol feed ring

An investigation of the characteristics of a propeller alcohol feed ring

Date: June 1, 1944
Creator: Neel, Carr B
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The Knock-Limited Performance of Fuel Blends Containing Spiropentane, Methylenecyclobutane, Di-Tert-Butyl Ether, Methyl Tert-Butyl Ether, and Triptane

The Knock-Limited Performance of Fuel Blends Containing Spiropentane, Methylenecyclobutane, Di-Tert-Butyl Ether, Methyl Tert-Butyl Ether, and Triptane

Date: May 1, 1946
Creator: Meyer, Carl L.
Description: Tests show that at inlet-air temperatures of 250 deg F and 100 deg F the knock-limited performance of the base fuel of blends, leaded with 4 ml TEL per gallon and containing 20 percent spiropentane, was reduced at fuel/air ratios below 0.085. The 20 percent methylenecyclobutane reduced the knock-limited power of the base fuel at fuel/air ratios below 0.112. Di-tert-butyl ether, methyl-tert-butyl ether, and triptane increased the knock-limited power of the base fuel at all fuel/air ratios and at both temperatures.
Contributing Partner: UNT Libraries Government Documents Department
The knock-limited performance of S reference fuel plus 2 milliliters of triethylthallium per gallon

The knock-limited performance of S reference fuel plus 2 milliliters of triethylthallium per gallon

Date: November 1, 1945
Creator: Meyer, Carl L
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The knock-limited performance of several fuels blended with S-2 reference fuel

The knock-limited performance of several fuels blended with S-2 reference fuel

Date: November 1, 1944
Creator: Alquist, Henry E
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Landing characteristics of a model of a flying boat with the depth of step reduced to zero by means of a retractable planing flap

Landing characteristics of a model of a flying boat with the depth of step reduced to zero by means of a retractable planing flap

Date: February 1, 1944
Creator: Freihofner, Anton
Description: None
Contributing Partner: UNT Libraries Government Documents Department