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Flight Tests of Modifications to Improve the Aileron Control Characteristics of a North American XP-51 Airplane (AC No. 41-38)

Description: Investigations were undertaken to improve the ailerons of a P-51 fighter so as to obtain greater effectiveness without increasing the stick forces. Modifications consisted of increasing the deflection range of the aileron to 70 percent and changing the original concave section to a thick section with beveled trailing edge. Results of the modified ailerons showed an increase in effectiveness over the original aileron of 70 percent at low speed and 55 percent at high speeds.
Date: June 1942
Creator: White, M. D. & Hoover, Herbert H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

Newsmap. Monday, June 1, 1942 : week of May 22 to May 29

Description: Front: Text describes action on various war fronts: Allied raids effective -- Stilwell in India -- Chinese repulse Japs -- Planes sink subs -- Against overconfidence -- Private buys $3,700 war bonds -- U.S. mission in Britain points to new fronts -- Labor will be 'frozen' -- Camacho asks for war -- 'Freeze' fish, razors -- New registration set -- Recruiting for WAAC -- Millions in war work -- Bombers to pop out like Model T's at Willow Run -- Kurdish revolt crushed -- Heavy action at Kharkov --… more
Date: June 1, 1942
Creator: [United States]. Army Orientation Course.
Item Type: Refine your search to only Poster
Partner: UNT Libraries Government Documents Department

Newsmap. Monday, June 8, 1942 : week of May 29 to June 5

Description: Front: Text describes action on various war fronts: Cologne and Essen flattened -- Tiny subs find Sydney ready -- the Japanese "save face" -- Army of 4 1/2 million for '42 -- Mexico welcomed into war -- Rommel's forces turned -- Hitler's hangman dies -- Poison gas used in China -- Armies shift in Russia. Large world map is keyed to text and illustrates time zones around the world. Inset maps show Libyan battle, Dutch Harbor, Axis drives and British attacks at Libyan; Unalaska Is.; Unalaska… more
Date: June 8, 1942
Creator: [United States.] Army Orientation Course.
Item Type: Refine your search to only Poster
Partner: UNT Libraries Government Documents Department
open access

A study of the application of data on various types of flap to the design of fighter brakes

Description: Report presenting an approximate method of applying the available data on various types of flaps in the design of fighter brakes together with several examples of its use. The computed effects of flap type, size, location, and deflection as well as the effects of altitude and initial velocities on braking characteristics are also shown in some examples using the method to determine various flap arrangements.
Date: June 1942
Creator: Purser, Paul E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Wind-tunnel investigation of control-surface characteristics 6: a 30-percent-chord plain flap on the NACA 0015 airfoil

Description: Report presenting force-test measurements in two-dimensional flow in the 4- by 6-foot vertical tunnel of the characteristics of an NACA 0015 airfoil equipped with a plain flap with a chord 30 percent of the airfoil chord and a plain tab with a chord 20 percent of the flap chord. Results regarding lift, hinge moment of flap, pitching moment, drag, and tab characteristics are provided.
Date: June 1942
Creator: Sears, Richard I. & Liddell, Robert B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Work clothes for women.

Description: Discusses design, fabric, and function of work clothes for women during wartime. Features designs by the Bureau of Home Economics which were released to the public through retail outlets as commercial patterns or as ready-to-wear garments. Includes line drawings and photographs, and features convertible clothing designs.
Date: June 1942
Creator: Scott, Clarice L. (Clarice Louisba), b. 1899
Item Type: Refine your search to only Book
Partner: UNT Libraries Government Documents Department
open access

Application of Balancing Tabs to Ailerons

Description: Analysis was made to determine characteristics required of a balancing-tab system for ailerons in order to reduce aileron stick forces to any desired magnitude. Series of calculations based on section data were made to determine balancing-tab systems of various chord tabs and ailerons that will give, for a particular airplane, zero rate of aileron hinge moment with aileron deflection and yet will produce same maximum rate of roll as a plain unbalanced 15-percent chord aileron of same span. Effe… more
Date: June 1942
Creator: Sears, Richard I.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Tire friction coefficients and their relation to ground-run distance in landing

Description: Report presenting a summary of published information on braking friction coefficients. Analysis indicates that the magnitude of the friction coefficient available will affect the technique required for obtaining the shortest ground run only under extreme conditions.
Date: June 1942
Creator: Gustafson, F. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A Study of the Tightness and Flushness of Machine-Countersunk Rivets for Aircraft

Description: Bulletin presenting the results of an investigation to determine possible improvements in the tightness and the flushness of machine-countersunk rivets. Specimens used in the study were simple lap joints made by different riveting methods. The results indicate that a comparison of the quality of machine-countersunk riveted joints on the basis of maximum load alone is not justified.
Date: June 1942
Creator: Lundquist, Eugene E. & Gottlieb, Robert
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effects of Range of Stress and of Special Notches on Fatigue Properties of Aluminum Alloys Suitable for Airplane Propellers

Description: "Laboratory tests were made to obtain information on the load-resisting properties of X76S-T aluminum alloy when subjected to static, impact, and repeated loads. Results are presented from static-load test of unnotched specimens in tension and in torsion and of notched specimens in tension. Charpy impact values obtained from bend tests on notched specimens and tension impact values for both notched and unnotched specimens tested at several different temperatures are included" (p. 1).
Date: June 1942
Creator: Dolan, Thomas J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Normal-pressure tests of circular plates with clamped edges

Description: A fixture is described for making normal-pressure tests of flat plates 5 inches in diameter in which particular care was taken to obtain rigid clamping at the edges. Results are given for 19 plates, ranging in thickness from 0.015 to 0.072 inch. The center deflections and the extreme-fiber stresses at low pressures were found to agree with theoretical values; the center deflections at high pressures were 4 to 12 percent greater than the theoretical values. Empirical curves are derived of the pr… more
Date: June 1942
Creator: McPherson, Albert E.; Ramberg, Walter & Levy, Samuel
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Normal-pressure tests of rectangular plates

Description: From Summary: "Normal-pressure tests were made of 56 rectangular plates with clamped edges and of 5 plats with freely supported edges. Pressure was applied and the center deflection and the permanent set at the center were measured. For some of the plates, strains and contours were measured in addition."
Date: June 1942
Creator: Ramberg, Walter; McPherson, Albert E. & Levy, Samuel
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Strength tests of thin-walled elliptic duralumin cylinders in pure bending and in combined pure bending and torsion

Description: An analysis is presented of the results of tests made by the Massachusetts Institute of Technology and by the National Advisory Committee for Aeronautics on an investigation of the strength of thin-walled circular and elliptic cylinders in pure bending and in combined torsion and bending. In each of the loading conditions, the bending moments were applied in the plane of the major axis of the ellipse.
Date: June 1942
Creator: Lundquist, Eugene E. & Stowell, Elbridge Z.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The mean aerodynamic chord and the aerodynamic center of a tapered wing

Description: A preliminary study of pitching-moment data on tapered wings indicated that excellent agreement with test data was obtained by locating the quarter-chord point of the average chord on the average quarter-chord point of the semispan. The study was therefore extended to include most of the available data on tapered-wing models tested by the NACA.
Date: June 16, 1942
Creator: Diehl, Walter S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Cooling in Cruising Flight With Low Fuel-Air Ratios

Description: Report presenting testing of a Pratt & Whitney R-1830-43 engine mounted in a B-24D nacelle in the full-scale wind tunnel in order to investigation the potential improvements of fuel economy. Suggestions for improving the cruising power and cruising range by operating at specified fuel-air ratios are provided.
Date: June 1942
Creator: Silverstein, Abe & Wilson, Herbert A., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Tests of four models representing intermediate sections of the XB-33 airplane including sections with slotted flap and ailerons

Description: Report presenting testing in the two-dimensional tunnel of four models submitted by the Glenn L. Martin Company as intermediate sections of the wing of the XB-33 airplane. Each airfoil model had different types of flaps or no flaps at all. Results regarding the lift and drag data, lift coefficients, effect of flap positions, aileron effects, drag coefficients, and hinge-moment coefficients are provided.
Date: June 1942
Creator: Abbott, Ira H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Investigation of Extreme Leading-Edge Roughness on Thick Low-Drag Airfoils to Indicate Those Critical to Separation

Description: Bulletin presenting a study of several airfoils, including a conventional NACA 23021 and some low-drag airfoils for which the thickness had been increased, as smooth airfoils and after the application of a standard roughness. The results show some of the airfoils to be critical to separation resulting from such flow disturbances.
Date: June 1942
Creator: Davidson, Milton
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Influence of Loading Condition on Piloting Technique for Spin Recovery for Pursuit Airplanes

Description: Bulletin presenting a discussion of information as to the influence on spins and spin recovery of the wing loading and load distribution of present-day pursuit airplanes. The high wing loadings results in high rates of descent and large control forces for recovery.
Date: June 1942
Creator: Soulé, H. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Free-spinning-tunnel tests of a 1/23.75-scale model of the Douglas DC-3 airplane

Description: Report presenting testing of a model of the Douglas DC-3 airplane for several loading conditions. The load factor for the complete airplane, for the horizontal tail, and the force to start moving the elevator downward were estimated for some steady spins. Testing occurred at 2500 feet and 10,000 feet.
Date: June 1942
Creator: MacDougall, George F., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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