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 Serial/Series Title: NACA Restricted Bulletin
 Serial/Series Title: NACA Wartime Reports
 Collection: National Advisory Committee for Aeronautics Collection
Aerodynamic characteristics of four NACA airfoil sections designed for helicopter rotor blades

Aerodynamic characteristics of four NACA airfoil sections designed for helicopter rotor blades

Date: February 1, 1946
Creator: Rice, Fred J , Jr
Description: None
Contributing Partner: UNT Libraries Government Documents Department
An analysis of the fatigue life of an airplane wing structure under overload conditions

An analysis of the fatigue life of an airplane wing structure under overload conditions

Date: February 1, 1946
Creator: Reisert, Thomas D
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
An approximate method of shear-lag analysis for beams loaded at right angles to the plane of symmetry of the cross section

An approximate method of shear-lag analysis for beams loaded at right angles to the plane of symmetry of the cross section

Date: September 1, 1943
Creator: Brilmyer, Harold J
Description: None
Contributing Partner: UNT Libraries Government Documents Department
An automatically variable control linkage and its effect on the lateral-control characteristics of a high-speed fighter airplane

An automatically variable control linkage and its effect on the lateral-control characteristics of a high-speed fighter airplane

Date: May 1, 1944
Creator: Gillis, Clarence L
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Calculation of stick forces for an elevator with a spring tab

Calculation of stick forces for an elevator with a spring tab

Date: June 1, 1944
Creator: Greenberg, Harry
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Calculations of intake-air cooling resulting from water injection and of water recovery from exhaust gas

Calculations of intake-air cooling resulting from water injection and of water recovery from exhaust gas

Date: August 1, 1944
Creator: Rotherock, Addison M
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Comparative fatigue tests of riveted joints of Alclad 24S-T, Alclad 24S-T81, Alclad 24S-RT, Alclad 24S-T86 and Alclad 75S-T sheet

Comparative fatigue tests of riveted joints of Alclad 24S-T, Alclad 24S-T81, Alclad 24S-RT, Alclad 24S-T86 and Alclad 75S-T sheet

Date: August 1, 1945
Creator: Mill, M N
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Comparative tests of the strength and tightness of commercial flush rivets of one type and NACA flush rivets in machine-countersunk and counterpunched joints

Comparative tests of the strength and tightness of commercial flush rivets of one type and NACA flush rivets in machine-countersunk and counterpunched joints

Date: February 1, 1944
Creator: Mandel, Merven W
Description: None
Contributing Partner: UNT Libraries Government Documents Department
A comparison of data obtained by two flight techniques for determining the sideslip characteristics of a fighter airplane

A comparison of data obtained by two flight techniques for determining the sideslip characteristics of a fighter airplane

Date: August 1, 1945
Creator: Johnson, Harold I
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Comparison of structural efficiencies of diagonal-tension webs and truss webs of 24S-T aluminum alloy

Comparison of structural efficiencies of diagonal-tension webs and truss webs of 24S-T aluminum alloy

Date: July 1, 1945
Creator: Ochiltree, David W
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Computation of the mean tangential velocity of the air leaving the blade tips of a centrifugal supercharger

Computation of the mean tangential velocity of the air leaving the blade tips of a centrifugal supercharger

Date: August 1, 1945
Creator: Brown, W Byron
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Critical compressive stress for curved sheet supported along all edges and elastically restrained against rotation along the unloaded edges

Critical compressive stress for curved sheet supported along all edges and elastically restrained against rotation along the unloaded edges

Date: September 1, 1943
Creator: Stowell, Elbridge Z
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Cylinder-head cooling by means of a shield in the exhaust passage

Cylinder-head cooling by means of a shield in the exhaust passage

Date: June 1, 1944
Creator: Mulcahy, B A & Wilsted, H D
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Determination from flight tests of thrust coefficients for 10 full-scale airplanes in the gliding condition with engine idling

Determination from flight tests of thrust coefficients for 10 full-scale airplanes in the gliding condition with engine idling

Date: June 1, 1945
Creator: Talmage, Donald B
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Determination of desirable lengths of Z- and channel-section columns for local-instability tests

Determination of desirable lengths of Z- and channel-section columns for local-instability tests

Date: October 1, 1944
Creator: Roy, J Albert
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Determination of iron contamination of used lubricating oil for use in measuring rates of wear in aircraft engines

Determination of iron contamination of used lubricating oil for use in measuring rates of wear in aircraft engines

Date: March 1, 1944
Creator: Tischler, Adelbert O
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Dilution of exhaust-gas samples from a multicylinder engine equipped with an exhaust-gas collector

Dilution of exhaust-gas samples from a multicylinder engine equipped with an exhaust-gas collector

Date: February 1, 1945
Creator: Butze, Helmut F
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Early detection of cracks resulting from fatigue stressing

Early detection of cracks resulting from fatigue stressing

Date: September 1, 1944
Creator: Bennett, John A.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The effect of angle of bend between plate elements on the local instability of formed Z-sections

The effect of angle of bend between plate elements on the local instability of formed Z-sections

Date: September 1, 1944
Creator: Schuette, Evan H
Description: None
Contributing Partner: UNT Libraries Government Documents Department
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
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