196 Matching Results

Search Results

Results: 1 - 24 next
open access

Aeronautical Record: No. 1 (to June, 1923)

Description: Memorandum presenting an overview of the development of aeronautical industries and commercial aircraft as well as some of the problems that are resulting from it. Details of the aeronautical budget in various countries, organization of the air service, material exports, and airline operations are provided.
Date: December 1923
Partner: UNT Libraries Government Documents Department
open access

Compressive Strength of Tapered Airplane Struts

Description: Note presenting methods for ascertaining the value of n in Euler's simplified formula, which can be used for the compressive strength of tapered airplane struts, by estimating from curves and by calculation.
Date: December 1923
Creator: Lewe, Viktor
Partner: UNT Libraries Government Documents Department
open access

Compressive Strength of Tapered Airplane Struts

Description: Methods are here given for ascertaining the value of n in Euler's simplified formula, P = n (EI/l(sup 2)), for the compressive strength of tapered airplane struts, by estimating from curves and by calculation.
Date: December 1923
Creator: Lewe, Viktor
Partner: UNT Libraries Government Documents Department
open access

Experiments With Fabrics for Covering Airplane Wings, to Determine Effect of Method of Installation

Description: Note presenting some information on the effect of changes in the loading and in the disposition of the supporting framework on the covering fabric. The magnitude of the air forces to be taken into account and the corresponding factors of safety to be expected will be covered in a future report. Tables regarding some of these fabric characteristics are provided.
Date: December 1923
Creator: Pröll, A.
Partner: UNT Libraries Government Documents Department
open access

Factors of Safety

Description: Factors of safety serve three purposes: provides against trouble arising from unexpectedly large loads, allows for imperfections of workmanship, represents a depreciation allowance. A consideration of these safety factors is provided in this report.
Date: December 1923
Creator: Warner, Edward P.
Partner: UNT Libraries Government Documents Department
open access

Industrial Accidents in the California Oil Fields

Description: Report issued by the U.S. Bureau of Mines on a study of the causes of employee accidents in California oil fields during the year of 1921 - 1922. This investigation was conducted to develop safety procedures and future accident prevention. This report includes tables.
Date: December 1923
Creator: Miller, H. C.
Partner: UNT Libraries Government Documents Department
open access

The Nichols Wing Cutting Equipment

Description: Described here is wing cutting equipment for the economical production of metal wings for wind tunnel models. The machine will make any size of constant-section wing or strut up to one-sixth inch chord by 36-inch span and up to a thickness of one and one-quarter inches. It cuts a smooth, true model that is accurate to within two-thousandths of an inch on any ordinate. The holding jaws are so designed as to leave the model free of chip marks, and the only hand finishing necessary after the cutti… more
Date: December 1923
Creator: Ford, James B.
Partner: UNT Libraries Government Documents Department
open access

Reduction in Efficiency of Propellers Due to Slipstream

Description: "In the slipstream behind a propeller there is a considerable amount of kinetic energy which has been imparted to it by the engine without producing any corresponding propeller thrust. The increased absorption of power reduces the propeller efficiency. Attention has been previously directed to this question by Bendemann and Madelung and other writers. Their contribution serves to verify a simple method of calculating the reduction in the propeller efficiency due to the slip stream" (p. 1).
Date: December 1923
Creator: Munk, Max M.
Partner: UNT Libraries Government Documents Department
open access

Air Resistance Measurements on Actual Airplane Parts

Description: "For the calculation of the parasite resistance of an airplane, a knowledge of the resistance of the individual structural and accessory parts is necessary. The most reliable basis for this is given by tests with actual airplane parts at airspeeds which occur in practice. The data given here relate to the landing gear of a Siemanms-Schuckert DI airplane; the landing gear of a 'Luftfahrzeug-Gesellschaft' airplane (type Roland Dlla); landing gear of a 'Flugzeugbau Friedrichshafen' G airplane; a m… more
Date: November 1923
Creator: Weiselsberger, C.
Partner: UNT Libraries Government Documents Department
open access

Determination of Climbing Ability

Description: "The vertical distribution of the pressure, temperature, and density of the atmosphere varies from day to day. Thus, rates of climb on different days cannot be compared directly, but must be corrected with reference to a standard rate of diminution of air density with increasing altitude. The following problem, therefore, has to be solved" (p. 1).
Date: November 1923
Creator: Blasius, H.
Partner: UNT Libraries Government Documents Department
open access

Monoplanes or Biplanes?

Description: This article presents a discussion of the relative merits between monoplanes and biplanes. A comparison of the aerodynamic qualities and advantages of both types are provided.
Date: November 1923
Creator: Warner, Edward P.
Partner: UNT Libraries Government Documents Department
open access

Possibility of Profitable Air Traffic Between Lisbon and Rio De Janeiro

Description: Different aspects of an airship line between Lisbon and Rio de Janeiro are presented. Some of the factors discussed are: the number of passengers, fuel consumption, design, itinerary, airports, flight times, and income.
Date: November 1923
Creator: Sherz, Walter
Partner: UNT Libraries Government Documents Department
open access

Rigid Airships

Description: Memorandum presenting the history and development of airships. Tables containing information and statistics regarding some of the current airships are provided.
Date: November 1923
Creator: Stahl, Friedrich
Partner: UNT Libraries Government Documents Department
open access

Rules and Regulations for Endurance Contest of Aviation Engines: Under the Auspices of the Aero Club of France

Description: Memorandum presenting the rules and regulations of the Endurance Contest of Aviation Engines, which was put on by the Aero Club of France. A description of the rules regarding the aircraft in competition, the characteristics of the tests that were conducted, and information regarding classification of the aircraft is provided.
Date: November 1923
Partner: UNT Libraries Government Documents Department
open access

Static Soaring Flight Over Flat Sea Coasts

Description: Static soaring flight has hitherto been accomplished by means of two sources of energy: ascending air currents in the vicinity of obstacles and those produced by unequal heating. The latter has not yet been practically tested in soaring flight.
Date: November 1923
Creator: Georgii, W.
Partner: UNT Libraries Government Documents Department
open access

Tests on Riveted Joints in Sheet Duralumin

Description: In making tension tests, the slippage of the joints was noted at three points across each joint. In addition, stress strain curves were obtained for plain tension specimens, and a chemical analysis was made of the sheet.
Date: November 1923
Creator: Rettew, H. F. & Thumin, G.
Partner: UNT Libraries Government Documents Department
open access

Wind Tunnel Tests of Five Strut Sections in Yaw

Description: In the first series of wind tunnel tests, the drag and cross wing force of all the struts were measured at a wind speed of 30 mph and at angles of yaw from 0 degrees to 20 degrees. To determine the magnitude of the VL effect, each strut was tested at zero yaw and at a series of speeds ranging from 15 to 38 mph. Although designed as fairings for cables, part of these sections gave such high crosswind forces that they seemed to have possibilities as airfoils.
Date: November 1923
Creator: Warner, Edward P.
Partner: UNT Libraries Government Documents Department
open access

The Arithmetic of Distribution in Multi-Cylinder Engines

Description: Note presenting a consideration of the effect on engine performance of a known inequality of distribution. A measure of perfect distribution is provided and some of the factors that influence the unequal distribution of power among cylinders.
Date: October 1923
Creator: Sparrow, Stanwood W.
Partner: UNT Libraries Government Documents Department
open access

Efficiencies in the Use of Bituminous Coking Coal as Water-Gas Generator Fuel

Description: Technical paper issued by the Bureau of Mines over the use of coking coal as a generator fuel. The results of using coking coal as fuel are presented and discussed. This paper includes tables, and illustrations.
Date: October 1923
Creator: Odell, W. W.
Partner: UNT Libraries Government Documents Department
open access

Fittings and Other Structural Parts of Airplanes

Description: "The strength and reliability of airplanes depend greatly on the careful design and manufacture of fittings, couplings, and other highly stressed parts. The more important parts of the airplane must be occasionally tested for increased loads and in order to avoid the possibility of defects creeping in during subsequent production. Strength tests are discussed for fittings for wing spar joints, fittings for strut connections, internal bracing, control gear, and landing gear" (p. 1).
Date: October 1923
Creator: Eydam, P.
Partner: UNT Libraries Government Documents Department
open access

General Theory of Windmills

Description: In this paper the application of the slip curve method to the design and analysis of windmills is discussed and illustrated by example.
Date: October 1923
Creator: Munk, Max M.
Partner: UNT Libraries Government Documents Department
open access

Graphic Method for Calculating the Speed and Climbing Ability of Airplanes

Description: Note presenting a graphic method for calculating the speed and climbing ability of airplanes. This method starts from the actual power developed by the engine and makes it possible to determine all factors which together constitute what are known as flight performances for any combination of engine and airplane from the single graphic diagram given.
Date: October 1923
Creator: Rohrbach, Adolf & Lupberger, Edwin
Partner: UNT Libraries Government Documents Department
Back to Top of Screen