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The British Klemm "Eagle" Commercial Airplane: A Low-Wing Cantilever Monoplane

Description: Circular presenting a description of the British Klemm "Eagle", which is a low-wing commercial cantilever monoplane. Details of the components, flying qualities, design characteristics, weights and loadings, drawings, and photographs are provided.
Date: August 1934
Partner: UNT Libraries Government Documents Department
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The Boeing Mail Airplane

Description: The Boeing Mail Airplane is a biplane with cloth covered wings of wood and wire construction, a top speed of 130 MPH, and a fuel capacity of 100 gallons in two tanks.
Date: August 1927
Partner: UNT Libraries Government Documents Department
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Caproni Airplane Ca 73 (Commercial) and Ca 73 ter (Military)

Description: The Caproni 73 is a biplane with medium thick wings, a rigid central section, and with each lateral extension forming a single cell and is powered by two 500 Isotta Fraschini "Asso" Engines.
Date: August 1927
Partner: UNT Libraries Government Documents Department
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Effect of Roughness on Properties of Airfoils

Description: The first group of a large series of contemplated experiments on the effect of roughness was intended to show the effect of great roughness on airfoils of various sizes and attitudes.
Date: August 1926
Creator: Schrenk, O.
Partner: UNT Libraries Government Documents Department
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Flight Measurements of the Effect of Various Amounts of Aileron Droop on the Low-Speed Lateral-Control Characteristics of an Observation Airplane

Description: Report presenting tests of the low-speed lateral-control characteristics of an observation airplane with ailerons and spoilers in combination and with the spoilers disconnected and the ailerons used alone with various amounts of droop. The results indicated that in unstalled flight at low speeds and with flaps deflected, little or no aerodynamic benefit was derived by changing the lateral-control system from the aileron and spoiler combination to a normal aileron installation either with or wit… more
Date: August 18, 1943
Creator: Turner, William N.
Partner: UNT Libraries Government Documents Department
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Breguet 390 T Commercial Airplane (French): A Ten-Seat All-Steel Sesquiplane

Description: Circular presenting a description of the Breguet 390 T, which is a three-engine all-metal transport sesquiplane with the same structural principles as the Breguet military airplane. This aircraft design replaces a girder fuselage with an orthodox rectangular fuselage with accommodations for ten passengers and baggage. Details of the design, components, flying qualities, drawings, and photographs are provided.
Date: August 1931
Partner: UNT Libraries Government Documents Department
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"Levasseur 8" Transatlantic Airplane

Description: Circular describing the Levasseur 8, which is an adaptation of a naval airplane adopted by the French Navy. Details of the wings, fuselage, landing gear, fuel, engine, and flying qualities are provided.
Date: August 1927
Partner: UNT Libraries Government Documents Department
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Effect of Viscosity in Speed Measurements With Double-Throat Venturi Tubes

Description: In order to clarify the viscosity effect some experiments were made in the Gottigen low-pressure tunnel with the Bruhn double-throat Venturi tube. This type of tunnel makes it possible to vary the pressure and thereby the density within wide limits and consequently, to examine the viscosity effect. This, however, did not impair the results because pressure and temperature were determined at different periods.
Date: August 1931
Creator: Peters, H.
Partner: UNT Libraries Government Documents Department
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Tables and charts of flow parameters across oblique shocks

Description: Shock-wave equations have been evaluated for a range of Mach number in front of the shock from 1.05 to 4.0. Mach number behind the shock, pressure ratio, derivation of flow, and angle of shock are presented on charts. Values are also included for density ratio and change in entropy.
Date: August 1948
Creator: Neice, Mary M.
Partner: UNT Libraries Government Documents Department
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Spartan "Cruiser" Commercial Airplane (British): A Six-Seat Low-Wing Cantilever Monoplane

Description: Circular describing the Spartan "Cruiser", which is a six-seat low-wing cantilever commercial monoplane with three engines. Details of the construction, fuselage, wing, tail unit, power plant, fuel system, lubrication system, landing gear, controls, cabin arrangement, characteristics, performance, drawings, and photographs are provided.
Date: August 1932
Partner: UNT Libraries Government Documents Department
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Effect of the Performance of a Turbosupercharged Engine of an Exhaust-Gas-to-Air Heat Exchanger for Thermal Ice Prevention

Description: This report presents the results of a flight investigation to determine the effect on the performance of a turbosupercharged engine of an exhaust-gas-to-air heat exchanger installed between the engine-exhaust collector ring and the turbosupercharger. The background, results, and discussion of the investigation are described.
Date: August 23, 1945
Creator: Look, Bonne C.
Partner: UNT Libraries Government Documents Department
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Supplement to Comparison of Automatic Control Systems

Description: "This analysis deals with the indirect regulator, wherefrom the behavior of the direct regulator is deduced as a limiting case. The prime mover is looked upon as "independent of the load": a change in the adjusting power (to be applied) for the control link (as, for example, in relation to the adjusting path (eta) with pressure valves or the rudder of vessels) does not modify the actions of the prime mover. Mass forces and friction are discounted; "clearance" also is discounted in the transmiss… more
Date: August 1941
Creator: Oppelt, W.
Partner: UNT Libraries Government Documents Department
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An Investigation of Aircraft Heaters 18: A Design Manual for Exhaust Gas and Air Heat Exchangers

Description: Report presenting a summary of a series of reports regarding heat exchangers, and in particular, the design of exhaust gas and air heat exchangers. The four parts included are a summary of heat transfer equations, single pass heat exchangers, heater performance in flight, and appendicies with additional aerodynamic information.
Date: August 1945
Creator: Boelter, L. M. K.; Martinelli, R. C.; Romie, F. E. & Morrin, E. H.
Partner: UNT Libraries Government Documents Department
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The Westland "Widgeon III": "Cirrus II or "Genet II" Engine

Description: The Widgeon III is a parasol type monoplane. One of its strongest features was the high degree of visibility available to the pilot. A description of the design, construction, flight characteristics, blueprints, and photographs are provided.
Date: August 1927
Partner: UNT Libraries Government Documents Department
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An experimental study of five annular air inlet configurations at subsonic and transonic speeds

Description: Report presenting an investigation of an NACA 1-80-100 nose inlet fitted alternately with an elliptical, a parabolic, a 14 degree-inch conical, and a 22 degree-inch conical central body at subsonic and transonic speeds in the 8-foot transonic tunnel. Drag, surface-pressure, and pressure-recovery measurements were obtained at 0 degrees angle of attack through a range of Mach numbers. Results regarding tunnel boundary interference, surface-pressure distribution, external drag, pressure recovery, … more
Date: August 19, 1953
Creator: Pendley, Robert E.; Milillo, Joseph R.; Fleming, Frank F. & Bryan, Carroll R.
Partner: UNT Libraries Government Documents Department
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Free Flight Investigation at Transonic Speeds of the Power-on Characteristics Including Some Effects of Sonic Propulsive Jets of a Four Engine Delta Wing Configuration

Description: Report discussing a model of a delta-wing configuration with four engines mounted two to a nacelle below the wing that was tested a variety of Mach numbers and Reynolds numbers. The wing static-pressure coefficients, wing pressure coefficients, and lift coefficient of different configurations are described.
Date: August 16, 1957
Creator: Falanga, Ralph A. & Judd, Joseph H.
Partner: UNT Libraries Government Documents Department
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