Technical Report Archive & Image Library (TRAIL) - 13 Matching Results

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The Drag of a J-5 Radial Air-Cooled Engine

Description: This note describes tests of the drag due to a Wright "Whirlwind" (J-5) radial air-cooled engine mounted on a cabin type airplane. The tests were made in the 20-foot Propeller Research Tunnel of the National Advisory Committee for Aeronautics. The drag was obtained with three different types of exhaust stacks: Short individual stacks, a circular cross section collector ring, and a streamline cross section collector ring.
Date: July 1928
Creator: Weick, Fred E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effect of variation of chord and span of ailerons on rolling and yawing moments in level flight

Description: This report presents the results of an investigation of the rolling and yawing moments due to ailerons of various chords and spans on two airfoils having the Clark Y and U. S. A. 27 wing sections. Some attention is devoted to a study of the effect of scale on rolling and yawing moments and to the effect of slightly rounding the wing tips. The results apply to level flight with the wing chord set at an angle of attack of +4 degrees and to conditions of zero pitch, zero yaw, and zero roll of the … more
Date: July 10, 1928
Creator: Heald, R. H. & Strother, D. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Experiments With a Wing From Which the Boundary Layer Is Removed by Pressure or Suction

Description: With an unsymmetrical wing and a rotating Magnus cylinder, the lift is produced by the superposition of parallel and circulatory flows. An explanation of the circulatory flow is furnished by the boundary-layer theory of Prandtl and the consequent vortex formation. According to this explanation, it must evidently be possible to increase the circulation either by increasing the size of the stronger (lower) vortex or by decreasing the size of the weaker (upper) vortex.
Date: July 1928
Creator: Wieland, K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Formation of Ice Upon Exposed Parts of an Airplane in Flight

Description: In order to experimentally study the conditions leading to ice formation on aircraft surfaces, an aircraft was equipped with small auxiliary surfaces and aerodynamic shapes similar to struts, wires, Pitot heads, etc. This airplane was flown at an altitude where a temperature of 32 F was encountered, at such times as cloud formations could be found at the coincident altitude. Here it was discovered that ice formed rapidly in regard to quantity, character, shape, and rapidity of formation.
Date: July 1928
Creator: Carroll, Thomas & McAvoy, William H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Full-Scale Wind-Tunnel Tests of a Series of Metal Propellers on a VE-7 Airplane

Description: "An adjustable blade metal propeller was tested at five different angle settings, forming a series varying in pitch. The propeller was mounted on a VE-7 airplane in the twenty-foot propeller research tunnel of the National Advisory Committee for Aeronautics. The efficiencies were found to be from 4 to 7 per cent higher than those of standard wood propellers operating under the same conditions. The results are given in convenient form for use in selecting propellers for aircraft" (p. 521).
Date: July 13, 1928
Creator: Weick, Fred E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Gluing Practice at Aircraft Manufacturing Plants and Repair Stations

Description: This report records observations and recommendations resulting from an inspection trip to representative aircraft manufacturing establishments and repair stations. This inspection was made for the Navy Department and was specifically in reference to gluing practice at the various places visited. The period of the visits was between November 23, 1926 and February 16, 1927.
Date: July 1928
Creator: Truax, T. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

An Investigation of the Aerodynamic Characteristics of an Airplane Equipped with Several Different Sets of Wings

Description: This investigation was conducted by the National Advisory Committee for Aeronautics at Langley Field, Va., at the request of the Army Air Corps, for the purpose of comparing the full scale lift and drag characteristics of an airplane equipped with several sets of wings of commonly used airfoil sections. A Sperry Messenger Airplane with wings of R.A.F.-15, U.S.A.-5, U.S.A.-27, and Gottingen 387 airfoil sections was flown and the lift and drag characteristics of the airplane with each set of wing… more
Date: July 9, 1928
Creator: Crowley, J. W., Jr. & Green, M. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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On Improvement of Air Flow in Wind Tunnels

Description: "The most important aerodynamical qualities that should be aimed at in wind tunnel design, are as follows: 1) constant and parallel direction of flow; 2) uniform velocity across all sections; 3) absence of turbulent motion; 4) constant velocity of flow. The above-mentioned qualities are all realized in a high degree in the Gottingen type of wind tunnel, with a parallel portion before the working section, the cross section of which is steadily reduced. It is shown in what follows, that the syste… more
Date: July 1928
Creator: Wieselsberger, C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The pressure distribution over the horizontal and vertical tail surfaces of the F6C-4 pursuit airplane in violent maneuvers

Description: "This investigation of the pressure distribution on the tail surfaces of a pursuit airplane in violent maneuvers was conducted for the purpose of determining the maximum loads likely to be encountered on these surfaces in flight. The information is a part of that needed for a revision of existing loading specifications to bring these into closer agreement with the actual flight conditions. A standard F6C-4 airplane was used and the pressure distribution over the right horizontal and complete ve… more
Date: July 9, 1928
Creator: Rhode, R. V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

René Couzinet Monoplane (French)

Description: Having been designed as a long range aircraft, it carries 6200 liters of fuel and 280 liters of oil and has three propeller groups, each with a 180 HP Hispano-Suiza engine capable of 230 HP. Details of the design, wings, ailerons, fuselage, fuel tanks, landing gear, characteristics, performances, tests, drawings, and photographs are provided.
Date: July 1928
Creator: Serryer, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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