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Newsmap. Monday, October 4, 1943 : week of September 23 to September 30, 212th week of the war, 94th week of U.S. participation

Description: Front: Text describes action on various war fronts: Italy, Corsica, Russia, New Georgia, Gilbert Is., Ellice Is., New Guinea, Western Europe. Maps show Northeast New Guinea; central Italy; Italy, Yugoslavia, Sardinia, Sicily, Tunisia. All maps show Nazi or Japanese occupied areas. Includes photographs: Naples, On the beach at Salerno, Smoke screen over Palermo, Ship with a mouth. Back: A mournful melody, or, a dud dood it again : and watch out for booby traps! 8 cartoon panels graphically describe the dangers of unexploded projectiles.
Date: October 4, 1943
Creator: [United States.] Army Orientation Course.
Partner: UNT Libraries Government Documents Department

Newsmap. Monday, October 11, 1943 : week of September 30 to October 7, 213th week of the war, 95th week of U.S. participation

Description: Front: Text describes action on various war fronts: Aegean Sea, Italy, Corsica, Russia, Norway, Southwest Pacific, Air offensive. Maps show Greece and Turkey, Eastern front, Central Italy. Includes photographs: Soldier killed by booby-trap, "Battleship X" is the USS South Dakota, Brenner Pass, Resting American soldiers following a battle in Munda. Back: Typical German infantry regiment. Illustration shows regiment. Text gives detailed description of Regimental Headquarters Company, Battalion Headquarters and Headquarters Detachment, Battalions, Infantry and Motorized Companies.
Date: October 11, 1943
Creator: [United States.] Army Orientation Course.
Partner: UNT Libraries Government Documents Department

Newsmap. Monday, October 18, 1943 : week of October 7 to October 14, 214th week of the war, 96th week of U.S. participation

Description: Front: Text describes action on various war fronts: Russia, Central Italy, Italy, Azores, Air offensive, Norway, Southwest Pacific, Wake. Large world map shows United Nations, Axis and Axis occupied areas, countries with Axis relations broken, and neutral countries. Includes inset maps: Eastern Europe, Roads to Rome, the globe, Scene of combined operations in the southwest Pacific. Photographs: Burma bombing campaign, Modern road to Rome, Wake Island, Tailgunner Sergt. Harris Goldberg of Brookline, Mass. Back: Photographic view of the world with the center at Tokyo, Japan. Includes instructions for using a detachable scale that, when centered on Tokyo, measures distances along any line running through Tokyo.
Date: October 18, 1943
Creator: [United States.] Army Orientation Course.
Partner: UNT Libraries Government Documents Department

Newsmap. Monday, October 25, 1943 : week of October 14 to October 21, 215th week of the war, 97th week of U.S. participation

Description: Front: Text describes action on various war fronts: Russia, Italy, Schweinfurt, Southwest Pacific, Burma, North Pacific, U.S. subs. Inset maps: Bridgeheads across the Dnepr River, [Pacific Ocean off coast of New Guinea], [Areas in Southern Europe providing targets for bomber forces], Operations begin in Burma. Photographs: Nazis use Soviet equipment and men in battle for Italy, Soviet soldier and RAF officer, Lieut. Col. Chesley G. Peterson, Salt Lake City, Fuel pipe lines, Fifth Army engineers, In the Naga Hills of northern Burma. Back: Photographic view of the world with the center at Berlin, Germany. Includes instructions for using a detachable scale that, when centered on Berlin, measures distances along any line running through Berlin.
Date: October 25, 1943
Creator: [United States.] Army Orientation Course.
Partner: UNT Libraries Government Documents Department

Engineer field manual : engineer troops.

Description: "This manual is designed to serve as a general reference on engineer organization. It covers the mission, classification, organization, equipment, armament, and training of engineer units."
Date: October 11, 1943
Creator: United States. War Department.
Partner: UNT Libraries Government Documents Department

Analysis of the High-Altitude Cooling of the Ranger SGV-770 D-4 Engine in the Bell XP-77 Airplane

Description: Report presenting an analysis of the cooling installation in the high-altitude XP-77 airplane for the entire altitude range. The engine was tested with the same cylinders, aluminum fins, and turbulent-flow baffles proposed for the high-altitude SCV-770 engine. The report is incomplete.
Date: October 1943
Creator: Nielsen, Jack N. & Schumacher, Lloyd E.
Partner: UNT Libraries Government Documents Department

Certain Mechanical Strength Properties of Aluminum Alloys 25S-T and X76S-T

Description: Note presenting tests made to determine certain mechanical strength properties of 25S-T aluminum alloy. Results are presented from static tests in tension and torsion, bending fatigue tests employing three different types of testing machines, and from impact tests of notched and unnotched specimens in tension as well as Charpy impact tests made at several low temperatures. These are made in order to study the stresses that propeller blades experience.
Date: October 1943
Creator: Dolan, Thomas J.
Partner: UNT Libraries Government Documents Department

Wind-Tunnel Investigation of Wing Ducts on a Single Engine Pursuit Airplane

Description: Report presenting a study of several ducts installed in the wings of a model of a conventional single-engine pursuit airplane in the full-scale tunnel to determine the influence of inlet design and cooling-air flow on the pressure losses within the duct and on the aerodynamic characteristics of the airplane. Large differences in the total pressure at the radiator occurred as a result of variations in the inlet-velocity ratio, the lift coefficient, the shape and position of the inlet, the slope of the diffuser axis, and propeller operation.
Date: October 1943
Creator: Nelson, W. J. & Czarnecki, K. R.
Partner: UNT Libraries Government Documents Department

Effect of Length-Beam Ration on Resistance and Spray of Three Models of Flying-Boat Hulls

Description: Report presenting an investigation of the effect of changes in the length-beam ratio of flying-boat hulls on resistance and spray. A family of three models of hulls of different length-beam ratios was used and, in order to maintain comparable hull sizes, the plan-form areas of the hulls were made approximately equal by keeping equal products of length and beam. Results regarding resistance, spray, and take-off performance are provided.
Date: October 1943
Creator: Bell, Joe W.; Garrison, Charlie C. & Zeck, Howard
Partner: UNT Libraries Government Documents Department

Free-Flight-Tunnel Investigation of the Effect of Mode of Propeller Rotation Upon the Lateral-Stability Characteristics of a Twin-Engine Airplane Model With Single Vertical Tails of Different Size

Description: Report presenting an investigation of the effect of direction of propeller rotation on the dynamic lateral stability characteristics of a twin-engine airplane model equipped with single vertical tails of three different sizes. The effects of flap deflection and amount of power were also studied. The most satisfactory lateral-stability characteristics of the model in flight were encountered for the model with large vertical-tail areas.
Date: October 1943
Creator: Pitkin, Marvin
Partner: UNT Libraries Government Documents Department

Flying qualities of a twin-engine patrol airplane as estimated from wind-tunnel tests

Description: Report presenting an estimate of the flying qualities of a twin-engine patrol airplane from wind-tunnel test results in comparison with flight observations as a possible guide in determining changes which would be necessary to improve these qualities. Results regarding the longitudinal and lateral stability and control of this airplane are provided.
Date: October 1943
Creator: Stevens, Victor I., Jr.
Partner: UNT Libraries Government Documents Department

Propellers in yaw

Description: It was realized as early as 1909 that a propeller in yaw develops a side force like that of a fin. In 1917, R. G. Harris expressed this force in terms of the torque coefficient for the unyawed propeller. Of several attempts to express the side force directly in terms of the shape of the blades, however, none has been completely satisfactory. An analysis that incorporates induction effects not adequately covered in previous work and that gives good agreement with experiment over a wide range of operating conditions is presented. The present analysis shows that the fin analogy may be extended to the form of the side-force expression and that the effective fin area may be taken as the projected side area of the propeller.
Date: October 11, 1943
Creator: Ribner, Herbert S.
Partner: UNT Libraries Government Documents Department

Effect of pH on strength of resin bonds

Description: Report presenting an investigation to determine the effect of acid on the strength and aging properties of various types of resin bonds for plywood. The pH values of the birch plywoods, flexural and impact strengths before and after aging of birch plywoods bonded with urea-formaldehyde resins and phenolic resins, and delamination properties of birch plywoods bonded with each type of resin are provided.
Date: October 1943
Creator: Rinker, R. C.; Reinhart, F. W. & Kline, G. M.
Partner: UNT Libraries Government Documents Department

Stresses Around Rectangular Cut-Outs in Skin-Stringer Panels Under Axial Loads 2

Description: "Cut-outs in wings or fuselages produce stress concentrations that present a serious problem to the stress analyst. As a partial solution of the general problem, this paper presents formulas for calculating the stress distribution around rectangular cut-outs in axially loaded panels. The formulas are derived by means of the substitute-stringer method of shear-lag analysis" (p. 1).
Date: October 1943
Creator: Kuhn, Paul; Duberg, John E. & Diskin, Simon H.
Partner: UNT Libraries Government Documents Department

Use of Stagnation Temperature in Calculating Rate of Heat Transfer in Aircraft Heat Exchangers

Description: "Theoretical and experimental investigations of the effect of frictional heat on the rate of heat transmission at high fluid velocities are briefly reviewed. On the basis of these investigations, calculations are made which show that the use of the stagnation temperature of the cooling air as the effective temperature for heat transfer in an aircraft heat exchanger is sufficiently accurate" (p. 1).
Date: October 1943
Creator: Wood, George P.
Partner: UNT Libraries Government Documents Department

The Measurement of Fuel-Air Ratio by Analysis of the Oxidized Exhaust Gas

Description: "An investigation was made to determine a method of measuring fuel-air ratio that could be used for test purposes in flight and for checking conventional equipment in the laboratory. Two single-cylinder test engines equipped with typical commercial engine cylinders were used. The fuel-air ratio of the mixture delivered to the engines was determined by direct measurement of the quantity of air and of fuel supplied and also by analysis of the oxidized exhaust gas and of the normal exhaust gas" (p. 73).
Date: October 1, 1943
Creator: Gerrish, Harold C. & Meem, J. Lawrence, Jr.
Partner: UNT Libraries Government Documents Department

Heat Transfer Over the Circumference of a Heated Cylinder in Transverse Flow

Description: "A method for recording the local heat-transfer coefficients on bodies in flow was developed. The cylinder surface was kept at constant temperature by the condensation of vapor except for a narrow strip which is heated separately to the same temperature by electricity. The heat-transfer coefficient at each point was determined from the electric heat output and the temperature increase" (p. 1).
Date: October 1943
Creator: Schmidt, Ernst & Wenner, Karl
Partner: UNT Libraries Government Documents Department

Critical Stresses for Plates

Description: Report presenting the basic methods of theoretically calculating the critical stress for plates with elastically restrained edges. Design charts for various types of sections and columns and critical stress for flat plates and curved sheets are provided.
Date: October 1943
Creator: Lundquist, Eugene E. & Schuette, Evan H.
Partner: UNT Libraries Government Documents Department

The effect of altitude on bomber performance

Description: Report presenting a study devoted to the analysis of the effect of design and operating altitude on the performance of bombers. The primary emphasis is on range performance and charts are presented with range as a function of wing loading, power loading, and design altitude. Results regarding the range at maximum L/D, range at constant power, and performance charts are provided.
Date: October 1943
Creator: Hill, Paul R. & Crigler, John L.
Partner: UNT Libraries Government Documents Department

Investigation of surface irregularities on an NACA 63(420)-416, a=1.0 airfoil section for the Glenn L. Martin Company design 195

Description: Report presenting the results of an investigation made in the two-dimensional low-turbulence pressure tunnel of surface irregularities on a low-drag airfoil section. The primary objective was to determine the effects of riveted and piano-hinge-type skin joints and of an aileron slot of the drag characteristics. Any type of surface irregularities at the front spar were found to cause substantial increase in drag.
Date: October 1943
Creator: Braslow, Albert L.
Partner: UNT Libraries Government Documents Department

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

Description: Report presenting an investigation in the 19-foot pressure tunnel of two-tapered wings with NACA 230-series airfoil sections, straight leading edges, and constant-chord center sections. Lift, drag, and pitching-moment coefficients were determined for the plain wing and for each flap arrangement for a range of Reynolds numbers. The results indicated that the wing with the square center section has greater maximum lift coefficients and increments of maximum lift due to flap deflections than the wing with the rectangular center section.
Date: October 1943
Creator: Fairbanks, Richard W. & Alexander, Sidney R.
Partner: UNT Libraries Government Documents Department