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Distant-Compass
Report presenting a description of fluid compasses that are being used in aircraft, including why magnetic compasses are not usable. Details of the distant compass are provided, which is an improved form of the compass that has a practical application in seaplanes.
Date:
June 1921
Creator:
Friedensburg, Walter & Miner, D. M.
Object Type:
Report
System:
The UNT Digital Library
The Dynamometer Hub and the Flywheel of the Engine
Report presenting a description of the interaction between the dynamometer hub and the flywheel of the engine in aircraft. The negative rotary moments in propellers generally allow for the cessation of one cylinder without any lifting on the part of the propeller, and without depriving the engine of its flywheel.
Date:
June 1921
Creator:
Everling, E.
Object Type:
Report
System:
The UNT Digital Library
Flexibility of Bearing Surfaces and Stress on Fabrics
Report presenting an investigation of the flexibility of bearing surfaces and stress on fabrics used in wings. Equations are given for calculating some of these loading factors.
Date:
June 1921
Creator:
Pröll, A.
Object Type:
Report
System:
The UNT Digital Library
Observations on the Method of Determining the Velocity of Airships
To obtain the absolute velocity of an airship by knowing the speed at which two routes are covered, we have only to determine the geographical direction of the routes which we locate from a map, and the angles of routes as given by the compass, after correcting for the variation (the algebraical sum of the local magnetic declination and the deviation).
Date:
June 1921
Creator:
Volterra, Vito
Object Type:
Report
System:
The UNT Digital Library
Simple Means for Saving Fuel on Traffic Flights
Report presenting a discussion of ways to save fuel on traffic flights, including some calculations that can be used for determining fuel efficiency. The primary ways of lessening fuel consumption include flying with a throttled engine and diminished speed.
Date:
June 1921
Creator:
Kook, E.
Object Type:
Report
System:
The UNT Digital Library
Comfort in Flight
Some advances in passenger comfort are discussed, namely, ventilated cabins, heating, seating arrangements, and doors.
Date:
June 1922
Creator:
Warner, Edward P.
Object Type:
Report
System:
The UNT Digital Library
Effect of Structure in Middle Part of Leading Edge of a Thick Wing: Communication From Rijks-Studiedienst Voor De Luchtvaart of Amsterdam
The experiments herein described were made for the purpose of finding whether removing a larger portion of the wing to improve the pilot's view would be possible, without too great detriment to the aerodynamic properties of the airplane. The experiments were conducted on a wing similar to the Fokker F III.
Date:
June 1922
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Engine Pistons of Light Metal
This report presents the results of testing 32 sets of light metal pistons from 16 different aluminum and magnesium alloys, 2 sets of cast iron pistons, and one piston of pure electrolytic copper. The many-fold mutual relations between material properties, shape, thermic and dynamic processes in the engine were clarified by comprehensive technical, thermic, chemical, physical and metallographic investigations of pistons and piston materials.
Date:
June 1922
Creator:
Becker, G.
Object Type:
Report
System:
The UNT Digital Library
Fakir Fuel Pump
"In designing the Fakir fuel pump, the fundamental idea was to obtain a simple and reliable method of conveying the fuel from a low tank to the carburetor, with the avoidance of the faults of all former methods and the simultaneous warming of the fuel by means of the heat of compression generated. The principle of the Fakir fuel pump rests on the well-known principle of the diaphragm pump, which must be suitably adapted to the present purpose" (p. 1).
Date:
June 1922
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Lecture on the Rhon soaring flight competition, 1921
This article presents a recounting of the Rhon soaring competition with emphasis on new designs, results, and prizes awarded. A round-robin discussion is also included at the end of the report.
Date:
June 1922
Creator:
Hoff, Wilhelm
Object Type:
Report
System:
The UNT Digital Library
Problem of the Slotted Wing: A Communication From the Aerodynamic Institute of the Aachen Technical High School
"It is to be expected that the advantageous properties, hitherto discovered in many slotted wing sections, depend very largely on the contour of the slot and the structural details of the wing. It is therefore of interest, aside from measurements on wings of constant cross-section along the span, to measure also wing models in which the structural details have already been given practical consideration" (p. 1).
Date:
June 1922
Creator:
Klemperer, W.
Object Type:
Report
System:
The UNT Digital Library
The Prospects of the Helicopter
The advantages of helicopters are listed along with a discussion of safety devices, the problems of control, and the need for horizontal flight.
Date:
June 1922
Creator:
Warner, Edward P.
Object Type:
Report
System:
The UNT Digital Library
The R-38 Catastrophe and the Mechanics of Rigid Airship Construction
An airship frame may be regarded as a rigid girder subjected to a number of forces which, according to their nature, may be classified as follows: weight or loads (force of gravity); lifting forces (aero-static); accelerations (dynamic). These forces must be in equilibrium in the three most important cases during flight: 1) when the airship is floating (aerostatic problem); 2) when flying without acceleration (aerodynamic problem). 3) When under the influence of any accelerating force (dynamic problem). This report will briefly discuss each of these cases in regard to the R-38 airship accident.
Date:
June 1922
Creator:
Herrera, Emilio
Object Type:
Report
System:
The UNT Digital Library
The World's Air Transportation Services: Data as to Passengers, Mail, and Goods Carried by American and European Transportation Services
This report presents detailed descriptions, statistics, and graphs on European and American air transport. The European countries listed are Belgium, Czecho-Slovakia, Denmark, France, Germany, Great Britain, Holland, and Italy.
Date:
June 1922
Creator:
Office of Aeronautical Intelligence
Object Type:
Report
System:
The UNT Digital Library
The Controls of an Airplane
The control of an airplane is discussed beginning with sideways motion and following up with control by weight shifting and by swinging wing tips.
Date:
June 1923
Creator:
Warner, Edward P.
Object Type:
Report
System:
The UNT Digital Library
Replacing the Weight of Materials Consumed on Airships
Two methods to replace the weight of gas lost on long airship flights are discussed: condensing the water of combustion and thermic sustentation. In the present article we will discuss the first method, leaving the second to be examined in a subsequent article.
Date:
June 1923
Creator:
Crocco, G. A.
Object Type:
Report
System:
The UNT Digital Library
Rules and Regulations Governing the Fokker Soaring-Flight Contest Over Water or Level Land
Memorandum presenting the rules and regulations of the Fokker Soaring Flight Contest, which occurred over the water and over level land.
Date:
June 1923
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
"Schneebeli" and "Birger" Silencers
The Schneebeli silencer is made entirely of soft sheet steel. It is connected with the engine for receiving the exhaust gases, and consists of two parts: the silencer proper and a conical exit. The Birger silencer, made by the Ad Astra Company in Switzerland, is based on the principle of rapid cooling of the exhaust gases.
Date:
June 1923
Creator:
Dollfus, Charles
Object Type:
Report
System:
The UNT Digital Library
Trend to Be Given Aerodynamical Research and Experiment
The causes of error in experiments conducted in wind tunnel tests are given and the value of in-flight tests are promoted. The four main causes explored include neglect of the laws of dynamic similitude, interference between the support and the model, nature of the air stream, and the influence of the walls of the tunnel.
Date:
June 1923
Creator:
Lèpere, M.
Object Type:
Report
System:
The UNT Digital Library
The "Turkey Buzzard" Glider
The "Turkey Buzzard" is a semi-internally braced monoplane (Fig. 1). The wing is placed above the fuselage for two important aerodynamical reasons: first, because this position minimizes the mutual interference between the wing and the fuselage, and, second, useful lifting surface is utilized with the wing passing over the fuselage instead of through it.
Date:
June 1923
Creator:
Miller, Roy G. & Brown, B. T.
Object Type:
Report
System:
The UNT Digital Library
Use of Helium in Airships
Economic and safety factors are discussed in relation to a switch from hydrogen to helium in airships.
Date:
June 1923
Creator:
Crocco, G. Arturo
Object Type:
Report
System:
The UNT Digital Library
Wood Versus Metal in Airplane Construction
The aim of this article is to present, in broad outline, a scientific method for solving the problem, "Wood or Metal." It will be shown that structural methods have by no means reached their final perfection. The strength of the different materials is discussed as well as different construction methods.
Date:
June 1923
Creator:
Seehase, H.
Object Type:
Report
System:
The UNT Digital Library
Wood Versus Metal in Airplane Construction
The aim of this article is to present, in broad outline, a scientific method for solving the problem, "Wood or Metal." It will be shown that structural methods have by no means reached their final perfection. The strength of the different materials is discussed as well as different construction methods.
Date:
June 1923
Creator:
Seehase, H.
Object Type:
Report
System:
The UNT Digital Library
Air Forces Exerted on Streamlined Bodies with Round or Square Cross- Sections, When Placed Obliquely to the Airstream
"The question of behavior of a streamlined body with round or square cross-sections is of importance in determining the shape to give an airplane fuselage. It is our task here to show how the lift and drag are affected, with the object placed obliquely to the air stream" (p. 1).
Date:
June 1924
Creator:
Wieselsberger, C.
Object Type:
Report
System:
The UNT Digital Library