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  Partner: UNT Libraries Government Documents Department
 Decade: 1940-1949
 Year: 1942
 Month: November
 Collection: Technical Report Archive and Image Library
Adjustment of stick force by a nonlinear aileron-stick linkage

Adjustment of stick force by a nonlinear aileron-stick linkage

Date: November 1, 1942
Creator: Lowry, John G
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Aerodynamic Heat-Power Engine Operating on a Closed Cycle

Aerodynamic Heat-Power Engine Operating on a Closed Cycle

Date: November 1, 1942
Creator: Ackeret, J. & Keller, D. C.
Description: Hot-air engines with dynamic compressors and turbines offer new prospects of success through utilization of units of high efficiencies and through the employment of modern materials of great strength at high temperature. Particular consideration is given to an aerodynamic prime mover operating on a closed circuit and heated externally. Increase of the pressure level of the circulating air permits a great increase of limit load of the unit. This also affords a possibility of regulation for which the internal efficiency of the unit changes but slightly. The effect of pressure and temperature losses is investigated. A general discussion is given of the experimental installation operating at the Escher Wyss plant in Zurich for a considerable time at high temperatures.
Contributing Partner: UNT Libraries Government Documents Department
Comparison of Intercooler Characteristics

Comparison of Intercooler Characteristics

Date: November 1, 1942
Creator: Valerino, Michael F
Description: No abstract available.
Contributing Partner: UNT Libraries Government Documents Department
Control-motion studies of the PBM-3 flying boat in abrupt pull-ups

Control-motion studies of the PBM-3 flying boat in abrupt pull-ups

Date: November 1, 1942
Creator: Smull, Leland K
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Control of Torsional Vibrations by Pendulum Masses

Control of Torsional Vibrations by Pendulum Masses

Date: November 1, 1942
Creator: Stieglitz, Albert
Description: Various versions of pendulum masses have been developed abroad within the past few years by means of which resonant vibrations of rotating shafts can be eliminated at a given tuning. They are already successfully employed on radial engines in the form of pendulous counterweights. Compared with the commonly known torsional vibration dampers, the pendulum masses have the advantage of being structurally very simple, requiring no internal damping and being capable of completely eliminating certain vibrations. Unexplained, so far, remains the problem of behavior of pendulum masses in other critical zones to which they are not tuned, their dynamic behavior at some tuning other than in resonance, and their effect within a compound vibration system and at simultaneous application of several differently tuned pendulous masses. These problems are analyzed in the present report. The results constitute an enlargement of the scope of application of pendulum masses, especially for in-line engines. Among other things it is found that the natural frequency of a system can be raised by means of a correspondingly tuned pendulum mass. The formulas necessary for the design of any practical version are developed, and a pendulum mass having two different natural frequencies simultaneously is described.
Contributing Partner: UNT Libraries Government Documents Department
Cooling investigation of a B-24D engine-nacelle installation in the NACA full-scale tunnel

Cooling investigation of a B-24D engine-nacelle installation in the NACA full-scale tunnel

Date: November 1, 1942
Creator: Guryansky, Eugene R
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The effect of exhaust-stack shape on the design and performance of the individual cylinder exhaust-gas jet-propulsion system

The effect of exhaust-stack shape on the design and performance of the individual cylinder exhaust-gas jet-propulsion system

Date: November 1, 1942
Creator: Humble, Leroy V
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The electrical structure of thunderstorms

The electrical structure of thunderstorms

Date: November 1, 1942
Creator: Workman, E J; Helzer, R E & Pelsor, G T
Description: The time histories of thunderstorm charge distribution during three storms occurring during the summer of 1940 in the vicinity of the Albuquerque Airport were investigated by the use of eight synchronized recording electrometers arranged in a particular pattern over a field 1.6 kilometers above sea level.
Contributing Partner: UNT Libraries Government Documents Department
Flight investigation of an NACA ice-detector suitable for use as a rate-of-icing indicator

Flight investigation of an NACA ice-detector suitable for use as a rate-of-icing indicator

Date: November 1, 1942
Creator: Jones, A R
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Flight investigation of the performance and cooling characteristics of an NACA C cowling on the XP-42 airplane

Flight investigation of the performance and cooling characteristics of an NACA C cowling on the XP-42 airplane

Date: November 1, 1942
Creator: Cavallo, Stefan A
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Full-scale-tunnel investigation of a multiengine pusher-propeller installation

Full-scale-tunnel investigation of a multiengine pusher-propeller installation

Date: November 1, 1942
Creator: Wilson, Herbert A
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Full-scale tunnel investigation of the control and stability of a twin-engine monoplane with propellers operating

Full-scale tunnel investigation of the control and stability of a twin-engine monoplane with propellers operating

Date: November 1, 1942
Creator: Sweberg, Harold H
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Graphical representation of intercooler parameters and performance at altitudes from 25,000 to 60,000 feet

Graphical representation of intercooler parameters and performance at altitudes from 25,000 to 60,000 feet

Date: November 1, 1942
Creator: Brimley, D E
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Interference effects of longitudinal flat plates on low-drag airfoils

Interference effects of longitudinal flat plates on low-drag airfoils

Date: November 1, 1942
Creator: Abbott, Ira H
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Lateral-control characteristics of North American XP-51 airplane (A. C. No. 41-38) with beveled trailing-edge ailerons in high-speed flight

Lateral-control characteristics of North American XP-51 airplane (A. C. No. 41-38) with beveled trailing-edge ailerons in high-speed flight

Date: November 1, 1942
Creator: White, Maurice D
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The longitudinal stability of flying boats as determined by tests of models in the NACA tank I : methods used for the investigation of longitudinal stability characteristics

The longitudinal stability of flying boats as determined by tests of models in the NACA tank I : methods used for the investigation of longitudinal stability characteristics

Date: November 1, 1942
Creator: Land, Norman S
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The Longitudinal Stability of Flying Boats as Determined by Tests of Models in the NACA Tank II : Effect of Variations in Form of Hull on Longitudinal Stability

The Longitudinal Stability of Flying Boats as Determined by Tests of Models in the NACA Tank II : Effect of Variations in Form of Hull on Longitudinal Stability

Date: November 1, 1942
Creator: Olson, Roland E. & Truscott, Starr
Description: Data taken from tests at constant speed to establish trim limits of stability, tests at accelerated speeds to determine stable limits of center of gravity shift, and tests at decelerated speeds to obtain landing characteristics of several model hull forms were used to establish hull design effect on longitudinal stability of porpoising. Results show a reduction of dead rise angle as being the only investigated factor reducing low trim limit. Various methods of reducing afterbody interference increased upper trim limit.
Contributing Partner: UNT Libraries Government Documents Department
Report of the Nonmetals Division: Fiscal Year 1942

Report of the Nonmetals Division: Fiscal Year 1942

Date: November 1942
Creator: Ralston, Oliver C. & Stern, A. George
Description: Report issued by the Bureau of Mines over the operations of the Nonmetals Division during 1942. The work done by the division is discussed. This report includes tables, illustrations, and photographs.
Contributing Partner: UNT Libraries Government Documents Department
Some theoretical considerations of longitudinal stability in power-on flight with special reference to wind-tunnel testing

Some theoretical considerations of longitudinal stability in power-on flight with special reference to wind-tunnel testing

Date: November 1, 1942
Creator: Donlan, Charles J
Description: None
Contributing Partner: UNT Libraries Government Documents Department
A study of general instability of box beams with truss-type ribs

A study of general instability of box beams with truss-type ribs

Date: November 1, 1942
Creator: Lundquist, Eugene E & Schwartz, Edward B
Description: The design of truss-type ribs for box beams is theoretically treated with regard to the function of the ribs in stabilizing the compression flange. The theory is applied to a design problem, and the results of this application are presented and discussed in relation to the general problem of rib design. The results of some tests made as a part of this general study are presented in an appendix.
Contributing Partner: UNT Libraries Government Documents Department
Summary of results of tests made by aluminum research laboratories of spot-welded joints and structural elements

Summary of results of tests made by aluminum research laboratories of spot-welded joints and structural elements

Date: November 1, 1942
Creator: HARTMANN E C & Stickley, G W
Description: Available information concerning spot welding as a means of joining aluminum-alloy parts has been summarized and comparisons have been made of the relative merits of spot-welded and riveted aluminum-alloy structural elements. The results indicated that spot welding was as satisfactory as riveting insofar as resistance to static loads is concerned. Spot welds showed slightly lower resistance to impact loads but definitely lower resistance to repeated loads than rivets.
Contributing Partner: UNT Libraries Government Documents Department
Torsion tests of a monocoque box

Torsion tests of a monocoque box

Date: November 1, 1942
Creator: Levy, Samuel; Mcpherson, Albert E & Ramberg, Walter
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Wind-Tunnel Investigations of Diving Brakes

Wind-Tunnel Investigations of Diving Brakes

Date: November 1, 1942
Creator: Fucha, D.
Description: Unduly high diving speeds can be effectively controlled by diving brakes but their employment involves at the same time a number of disagreeable features: namely, rotation of zero lift direction, variation of diviving moment, and, the creation of a potent dead air region.
Contributing Partner: UNT Libraries Government Documents Department