Technical Report Archive & Image Library (TRAIL) - 1,438 Matching Results

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Nomogram for Correcting Drag and Angle of Attack of an Airfoil Model in an Air Stream of Finite Diameter

Description: In experimenting with airfoil models in a wind tunnel, the magnitude of the forces acting on the model is affected by the fact that the air stream in which the model is suspended, has a restricted cross-section. In order to utilize the results for an airplane in an unlimited quantity of air, a correction must be made. The magnitude of this correction was determined by Prandtl by the application of his wing theory.
Date: December 1924
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Provisional Rules for the Inspection of Aircraft Adopted by the French Bureau Veritas

Description: These new regulations are intended to replace those of November 1, 1922, and give the directions to be followed in the supervision of aircraft by the agents of the Aeronautical Section of the Bureau Veritas. The rules consist of four sections: rules regarding an aircraft leaving a repair shop, the objects of quarterly and weekly inspections, and rules regarding the upkeep and repair of airplanes.
Date: September 1924
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Report on Ice Formation on Aircraft

Description: The physical phenomena involved in the icing of aircraft have been analyzed and measured. Recommendations on warning devices are made as well as the different types of ice and glazing that can occur on airplanes are examined and discussed.
Date: November 1939
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Resume of the Activities of the Aeronautical Experimental Institute, Rome, During the Months of May, June, July and August 1921

Description: This report is a listing of the different studies conducted by the Institute in May thru August of 1921. The aerodynamical section studied: the aerodynamical characteristics of a very thick concave-convex wing; the disturbance caused in a tunnel by the presence of a disk, placed in relation with a transversely infinite barrier; vertical pressure in a wing of low head resistance; the drag caused by two small doors in the sides of the fuselage. Some other studies conducted by the Institute includ… more
Date: July 1922
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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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
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Some New Tests at the Gottingen Laboratory

Description: The tests at the Gottingen laboratory included: friction tests on a surface treated with emaillite, verification tests on the M.V.A. 356 wing, and comparative tests of wing no. 36 at the Eiffel laboratory. The examination of all these experiments leads to the belief that, at large incidences, the speeds registered by the suction manometer of the testing chamber of the Eiffel laboratory wind tunnel are, owing to pressure drop, greater than the actual speeds. Therefore, the values of k(sub x) and… more
Date: April 1921
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Standards for Discharge Measurement With Standardized Nozzles and Orifices

Description: The following standards give the standardized forms for two throttling devices, standard nozzles and standard orifices, and enable them to be used in circular pipes without calibration. The definition of the standards are applicable in principle to the calibration and use of nonstandardized throttling devices, such as the venturi tube. The standards are valid, likewise, as a basis for discharge measurements in the German acceptance standards.
Date: September 1940
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Technical Development of the Transport airplane: Report of the Aero-Technical Conference of the Scientific Association for Aeronautics, March 5, 1919

Description: The abolition of military qualifications gives free scope to new technical possibilities in the development of transport airplanes. This report notes the various considerations that must be made when designing aircraft to meet the needs of commercial passengers. Comfort and safety must be emphasized.
Date: April 1921
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Two-Seat Light Airplanes Which Participated in Contest Held at Lympne, England, Week of September 29 to October 4, 1924

Description: Memorandum presenting a description of a competition to produce an airplane suitable for school work. The characteristics evaluated included the speed range, take off, landing, reliability, and high and low speed are provided. A variety of monoplanes and biplanes were entered and a description of each and their blueprints are provided.
Date: November 1924
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Wind Tunnel of the Bucharest Polytechnic Institute

Description: This report describes the Bucharest wind tunnel and presents numerous photographs and diagrams. The wind tunnel is of the closed- circuit type, the return being symmetrical with respect t o the longitudinal axis of the tunnel. Th e tunnel is of the horizontal type with a diameter of 3. 2 m (10. 5-ft.) a t the beginning of the entrance cone, and 1.5 m ( 4,92 ft.) at the entrance to the test chamber. The latter, 2 m (6.56 ft.) long, may be either of the open-jet type or enclosed in a cylindrical … more
Date: December 1931
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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