Technical Report Archive & Image Library (TRAIL) - 103 Matching Results

Search Results

Results: 1 - 24 next
open access

Dyle and Bacalan Metal Monoplane, D.B. 10: Night Bomber - Equipped with Two 420 HP. Jupiter Engines

Description: The D.B. 10 is manufactured of duraluminum and special high resistance steel. It can be used as a passenger aircraft or as a bomber. Details of the design, wings, fuselage, empennage, engines, landing gear, characteristics, performances, drawings, and photographs are provided.
Date: January 1927
Creator: Serryer, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Remarks on Building of Low-Powered Airplanes

Description: "If the low-powered airplane is to be used advantageously by private individuals, the most important consideration is a smaller fuel consumption and, hence, a lower engine power. From experiments with gliders, it appears entirely possible, by utilizing ascending winds (on the weather side of mountains and those generated by the heat of the sun) and by employing engine flight intermittently, as required to fly long distances over land" (p. 1).
Date: January 1924
Creator: Langsdorff, Werner v.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Photographic Time Studies of Airplane Paths

Description: The object of this report is the description of a method which seems to be practicable for determining the path of an airplane, especially in taking off and landing. This report tells how, by means of a camera, preferably a kinetograph, which simultaneously photographs a stop watch the distance of an airplane from the camera and its height above the ground can be determined.
Date: January 1926
Creator: Von Baumhauer, A. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Two-Stroke-Cycle Engines for Airplanes

Description: Now that the two-stroke-cycle engine has begun to make its appearance in automobiles, it is important to know what services we have a right to expect of it in aeronautics, what conditions must be met by engines of this type for use on airplanes and what has been accomplished.
Date: January 1926
Creator: Jalbert, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Calculation of Tubular Radiators of the Automobile Type

Description: "We propose to show how to calculate the cooling capacity of all radiators through which the air flows in separate streamlets, whether enclosed in actual tubes or not and whatever cross-sectional shape the tubes may have. The first part will give the fundamental principles for calculating velocity of air in the tubes and the heat exchange by radiation, conduction and convection, and show, by examples, the agreement of the calculation with experiments. In the second part, the effect of the dimen… more
Date: January 1926
Creator: Richter, L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Efflux of Gases Through Small Orifices

Description: Scientific paper issued by the Bureau of Standards over studies conducted on gas effusion rates. The methods used and the results of the studies are presented and discussed. This paper includes tables, and illustrations.
Date: January 28, 1920
Creator: Buckingham, Edgar & Edwards, Junius David
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Precision of Wing Sections and Consequent Aerodynamic Effects

Description: Note presenting an investigation to determine the precision of wing sections of wood fabric construction used on a number of airplanes. All of the wing sections were found to deviate more or less from their respective prototypes. The aerodynamic effects resulting from consideration of thickness variation are then estimated from existing empirical information.
Date: January 1927
Creator: Rizzo, Frank
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

On the Resistance of Spheres and Ellipsoids in Wind Tunnels

Description: Note presenting a study of the influence exercised on the results of measurements by the dimensions and type of the tunnels used in aerodynamic laboratories, and on the comparison of the results with observations made in motionless and unlimited air.
Date: January 1921
Creator: Riabouchinsky, D. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Behm Acoustic Sounder for Aircraft

Description: The Behm acoustic sounder for aircraft enables the barometric determination for the altitude by night or fog and therefore promises to prove of great importance in safeguarding air traffic.
Date: January 1926
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Testing a Windmill Airplane ("Autogiro")

Description: In order to clear up the matter ( In the Spanish report it was stated that the reference surface for the calculation of the coefficients c(sub a) and c(sub w) was the area of all four wings, instead of a single wing), the model of a windwill airplane was tested in the Gottingen wind tunnel.
Date: January 1927
Creator: Seiferth, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Stall-Proof Airplanes

Description: Report investigating some characteristics of aircraft stall, including the following: Is the danger of stalling necessarily inherent in the airplane in its present form and structure, or can it be diminished or eliminated by suitable means? Do we possess such means or devices and how must they operate?
Date: January 1927
Creator: Lachmann, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Tensile Strength of Welded Steel Tubes: First Series of Experiments

Description: The purpose of the experiments was to determine the difference in the strength of steel tubes welded by different methods, as compared with one another and also with unwelded, unannealed tubes, including; moreover, a comparison of the results obtained by experienced and inexperienced welders.
Date: January 1928
Creator: Rechtlich, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Crank Case Scavenging of a Two-Stroke-Cycle Engine

Description: "Experiments with a two-stroke-cycle, crank case scavenging engine. Effect of systematic variation of the height of the scavenge and exhaust ports on the scavenging, as determined by gas analysis. The best results were obtained under conditions differing from the usual ones" (p. 1).
Date: January 1928
Creator: Holm, Otto
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Removing boundary layer by suction

Description: "Through the utilization of the "Magnus effect" on the Flettner rotor ship, the attention of the public has been directed to the underlying physical principle. It has been found that the Prandtl boundary-layer theory furnishes a satisfactory explanation of the observed phenomena. The present article deals with the prevention of this separation or detachment of the flow by drawing the boundary layer into the inside of a body through a slot or slots in its surface" (p. 1).
Date: January 1926
Creator: Ackeret, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Albessard "Triavion" Airplane (French): A Two-Seat Tandem Monoplane

Description: Autostability is the watchword of this tandem monoplane. The tandem design causes a natural flat flight pattern and it can also land and take off from very short runways. Details of the form, wings, ailerons, fuselage, characteristics, performances, drawings, and photographs are provided.
Date: January 1929
Creator: Serryer, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen