National Advisory Committee for Aeronautics (NACA) - 13,786 Matching Results
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- The Shackleton-Murray SM-1 Light Airplane: A Two-Place High-Wing Monoplane
- Circular presenting a description of the light airplane SM-1, which was designed by W. S. Shackleton and Lee Murray. Information regarding the design and flight characteristics and some photographs of the airplane are provided.
- The Comper "Mouse" Commercial Airplane (British): A Three-Seat Cabin Low-Wing Monoplane
- Circular describing the Comper "Mouse" commercial airplane, which is a three-seat cabin low-wing monoplane. Details regarding the landing gear, wings, cabin, seating, fuselage, tail, power plant, controls, characteristics, performance, drawings, and photographs are provided.
- Intercooler cooling-air weight flow and pressure drop for minimum drag loss
- Report presenting an analysis of the power losses in airplane flight of cross-flow plate and tubular intercoolers to determine the cooling-air weight flow and pressure drop that give minimum total power loss for any given cooling effectiveness. The investigation covers a range of flight conditions of altitude, airspeed, lift-drag ratio, supercharger-pressure ratio, and adiabatic efficiency.
- The "Avro Trainer" Airplane (British): A Training Biplane
- Circular presenting a description of the Avro Trainer airplane, which is primarily intended for pilots in training and is designed to be easy to use, including large, comfortable cockpits, good view, effective windshields, and wide track. Details of the design, flight characteristics, drawings, and photographs are provided.
- Albert TE-1 Training Airplane
- The TE-1 is designed for the economical training of pilots and is a single seat parasol cantilever monoplane. It is nearly entirely made of wood, using a 40 HP. air-cooled Salmson A.D. 9 engine, and weighs 255 kg empty.
- Investigations toward simplification of missile control systems
- Paper presenting three ideas regarding potential simplifications of missile-control systems in order to make them more reliable without sacrificing system performance. The three methods presented include an autorotating-vane spoiler, a bellows flap, and free controls. All are based on modified airplane control systems.
- Correlation of exhaust-valve temperatures with engine operating conditions and valve design
- Report presenting a theory regarding engine-cooling variables from a previous report, which was used as a basis for the development of a semi-empirical equation to correlate exhaust-valve temperature with engine conditions. Results regarding the determination of constants, influences of operating variables on mean effective gas temperatures, thermal-resistance factor, and accuracy of correlating equation are provided.
- Experiments on Drag of Revolving Disks, Cylinders and Streamline Rods at High Speeds
- Report presenting an experimental investigation concerned primarily with the extension of test data on the drag of revolving disks, cylinders, and streamline rods to high Mach numbers and Reynolds numbers. The tests generally confirm earlier theories and add in some new results. One of the primary findings of interest is that skin friction does not depend on Mach number.
- The effect of compressibility on two-dimensional tunnel-wall interference for a symmetrical airfoil
- Summary: The effective change in the velocity of flow past a wing section, caused by the presence of wind-tunnel walls, is known for potential flow. This theory is extended by investigation of the two-dimensional compressible flow past a thin Rankine Oval. It is shown that for a symmetrical section at zero angle of attack the velocity increment due to the tunnel walls in the incompressible case must be multiplied by the factor 1/1-M^2 to take account of compressibility effects. The Mach number, M, corresponds to conditions in the wind-tunnel test section with the model removed (p. 1.).
- Lioré-Olivier LeO 194 Seaplane
- Report presenting a description of the Lioré-Olivier LeO 194 seaplane and a particular series of flights made over several months. Its fuselage is made entirely of wood. It has 6 gasoline tanks each with a capacity of 255 liters. It is a single engine biplane with wings mounted above the body of the seaplane.
- The Bleriot 137 Military Airplane (French): A Twin-Engine Multiplace Monoplane
- Circular presenting a description of the Blériot 137, which is a metal modification of the Bléirot 127. A description of the crew, the equipment, firing tests of the guns, and flight characteristics are provided.
- The Hanriot-Biche 110 C1 Airplane (French): An All-Metal Low-Wing Pursuit Monoplane
- Circular presenting a description of the Hanriot-Biche 110 C1 airplane, which is a French all-metal low-wing pursuit monoplane. Details regarding the wing, girders and tail surfaces, pilot's cockpit, power plant, landing gear, flying qualities, and photographs are provided.
- The Guilleman J.G. 10 (French) : A Two-Place Touring Low-Wing Monoplane
- Circular describing the Guillemin J.G. 10, which is a two-place touring low-wing monoplane. Details of the wing, fuselage, engine, characteristics, drawings, and photographs are provided.
- The Dyle and Bacalan "D.B. 80" Day Mail Airplane (French): An All-Metal High-Wing Monoplane
- Report presenting a description of the Dyle and Bacalan D.B. 80 airplane, which can be used for delivering mail. Details of the wing, fuselage, tail, landing gear, fuel tanks, and flying qualities are provided.
- A method for determining the rate of heat transfer from a wing or streamline body
- From Summary: "A method for calculating the rate of heat transfer from the surface of an airfoil or streamline body is presented. A comparison with the results of an experimental investigation indicates that the accuracy of the method is good. This method may be used to calculate the heat supply necessary for heat de-icing or in ascertaining the heat loss from the fuselage of an aircraft operating at great altitude, for example."
- Emergency Measures for Increasing the Range of Fighter Airplanes
- "An analysis was made to show the relative effectiveness of streamline external fuel tanks, a fuel tank in the form of a wing mounted in a biplane position, and auxiliary wing panels attached at the wing tips to increase the span as temporary means for increasing the range of a fighter-type airplane. Figures and charts for the various devices considered show the results of calculations of range, duration of flight, and take-off distance for both land-base and carrier operation. The results indicated that the wing-tip extensions were the most promising of the devices considered" (p. 1).
- Vickers "Viastra I" Commercial Airplane (British): A High-Wing All-Metal Semicantilever Monoplane
- Circular describing the Vickers Viastra I, which is a commercial high-wing all-metal semicantilever monoplane. Details of the structure, fuselage, wings, fuel tanks, landing gear, tail, cabin, cockpit, characteristics, drawings, and photographs are provided.
- Review of Flight Tests of NACA C and D Cowlings on the XP-42 Airplane
- Report presenting the results of flight tests of the performance and cooling characteristics of three NACA D cowlings and of a conventional NACA C cowling on the XP-42 airplane. The D cowling is, generally, characterized by the use of an annular inlet and diffuser section for the engine-cooling air. An increase in maximum speed was noted in the XP-42 airplane due to the change from a C cowling to a D cowling.
- Morane-Saulnier 121 Single-Seat Pursuit Airplane (French)
- The M.-S. 121 is noted for it's excellent visibility inherent in the parasol design. The wings have no dihedral but a very pronounced sweep back. A description of the components, flight characteristics, performance, drawings, and photographs are provided.
- Fuel-Evaporation Loss as Determined by the Change in the Specific Gravity of the Fuel in an Aircraft Fuel Tank
- Report discusses the results of an investigation to determine the feasibility of using the change in the specific gravity of fuels in aircraft fuel tanks to measure fuel-vaporization loss. Six fuels were tested via fuel-distillation tests and simulated-flight tests. An equation based on the specific gravity of the fuel is also described.
- Stability of the Parachute and Helicopter
- This report deals with an extension of the theory of stability in oscillation to the case of aircraft following a vertical trajectory, and particularly to the oscillations of parachutes.
- The Henderson "Hendy" 302 Cabin Airplane (British): A Two-Seat Low-Wing Cantilever Monoplane
- Circular presenting a description of the Hendy 302, which is a two-seat, low-wing cantilever monoplane with a hinged cabin top. A description of the design, flying qualities, and photographs are provided.
- The Transformation of Heat in an Engine
- This report presents a thermodynamic basis for rating heat engines. The production of work by a heat engine rests on the operation of supplying heat, under favorable conditions, to a working fluid and then taking it away.
- Fluid de-icing tests on a Chandler-Evans 1900 CPB-3 carburetor mounted on a Pratt & Whitney R-1830-C4 intermediate rear engine section
- Report presenting an investigation of the icing and de-icing characteristics of a Pratt & Whitney R-1830 engine induction system. The current report covers a program to determine the most effective rate and method of injection of de-icing fluid to remove a heavy ice formation from the induction system. Results regarding the flow rates, recovery times, de-icing portions of the runs, and ice formation characteristics are provided.
- Richard-Penhoet Commercial Seaplane
- This is a multi-engine monoplane with a central hull and without external bracing. The trim of the seaplane on the water is assured by two wing floats, one on each side of the hull 9 m. from its axis. It has a total power of 2100 HP. from 5 air cooled Jupiter radial engines.
- Breguet Military Airplane, Type 33: A Two-Place Long-Distance Sesquiplane for Observation and Bombing
- Circular presenting a description of the Breguet military airplane, Type 33, which is a two-place long-distance sesquiplane made for observation and bombing. Details of the components, bomb dropping, flying qualities, design, flying qualities and performances, drawings, and photographs are provided.
- The Fokker "Trimotor F VII" Commercial Transport Monoplane
- Directly developed from the single engined type F VII ten passenger monoplanes, the Fokker Trimotor closely follows the commercial aircraft that preceded it. It has three Wright Whirlwind air-cooled engines, rated at 200 HP each. Details of the wings, cockpit and cabin, baggage and freight compartments, controls, landing gear, characteristics, drawings, and photographs are provided.
- The Airspeed "Oxford" Training Airplane (British): A Two-Engine Cantilever Monoplane
- Circular describing the Airspeed A.S. 10 "Oxford", which is a twin-engine trainer with a variety of equipment, including propellers, landing gear, and other components.Details of the wings, fuselage, the inside, characteristics, performance, drawings, and photographs are provided.
- Vojenska-Smolik S.16 Airplane: All-Metal Long-Distance Observation Bi-Plane
- Circular presenting a description of the Vojenska-Smolik all-metal two-seater airplane. The design and flight characteristics are described and blueprints and photographs of the aircraft are provided.
- The "Comte A.C. 3" Military Airplane (Swiss) : A High-Wing Semicantilever Monoplane
- Circular presenting a description of the Comte A.C. 3, which is a high-wing monoplane with tow tandem 600 hp Hispano-Suiza engines mounted above the fuselage. Details of the design, fuel tanks, fuselage, pilot seating, engine, wings, safety factors, and flight qualities are provided.
- The Boeing Mail Airplane
- 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.
- Flight tests of thermal ice-prevention equipment in the XB-24F airplane
- Report presenting performance tests of thermal ice-prevention equipment designed and installed in the XB-24F airplane in icing and non-icing conditions. The recorded temperature and air-flow data, and the calculated quantities of heat flow throughout the system are presented in tabular form.
- Travel Air Commercial Airplane - Type 5000
- The 5000 is a semicantilever monoplane, closed cabin type, with pilot about in line with the leading edge of the wing and room for 4 passengers behind him. It is equipped with a Wright Whirlwind engine. A description of the visibility, propeller, power plant, pilot's cockpit, passenger cabin, landing gear, struts, wings, fuselage, empennage, general, characteristics, photographs, and drawings are provided.
- Supplies and Production of Aircraft Woods
- The purpose of this report is to present in brief form such information as is available regarding the supplies of the kinds of wood that have been used or seem likely to become important in the construction of airplanes, and the amount of lumber of each species normally put on the market each year. A general statement is given of the uses to which each kind of wood is or may be put.
- The C.A.M.S. 60 Seaplane (French): A Twin-Engine Bombing and Torpedo Monoplane
- Circular presenting a description of the C.A.M.S. 60, which is a twin-engine monoplane with a medium-thickness wing and two floats. Details of the wings, engines, fuselages, floor, rear cabin, floats, and flying qualities are provided.
- The Latécoère 501 Commercial Seaplane (French): A Three-Engine Metal Sesquiplane
- Circular presenting a description of the Latécoère 501. A more detailed description of the general characteristics, power plant, wings, planing fins, hull, tail surfaces, and flying characteristics are provided.
- Flight Tests of Modifications to Improve the Aileron Control Characteristics of a North American XP-51 Airplane (AC No. 41-38)
- Investigations were undertaken to improve the ailerons of a P-51 fighter so as to obtain greater effectiveness without increasing the stick forces. Modifications consisted of increasing the deflection range of the aileron to 70 percent and changing the original concave section to a thick section with beveled trailing edge. Results of the modified ailerons showed an increase in effectiveness over the original aileron of 70 percent at low speed and 55 percent at high speeds.
- An approximate spin design criterion for monoplanes
- "A quantitative criterion of merit has been needed to assist airplane designers to incorporate satisfactory spinning characteristics into new designs. An approximate empirical criterion, based on the projected side area and the mass distribution of the airplane, has been formulated in a recent British report. In the present paper, the British results have been analyzed and applied to American designs. A simpler design criterion based solely on the type and the dimensions of the tail, has been developed: it is useful in a rapid estimation of whether a new design is likely to comply with the minimum requirements for safety in spinning" (p. 1).
- Ultraviolet spectrochemical analysis for aromatics in aircraft fuels
- Report presenting tests to verify and extend ultraviolet spectroscopic techniques for applications to the analysis of aviation fuels for their aromatic constituents. Results regarding photographic absorption spectra, spectrophotometric absorption spectra, and spectrophotometric analyses are provided.
- Caproni Airplane Ca 73 (Commercial) and Ca 73 ter (Military)
- 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.
- On the plane potential flow past a symmetrical lattice of arbitrary airfoils
- Report presenting a theoretical investigation of the two-dimensional, incompressible potential flow past a symmetrical lattice of airfoils of arbitrary shape. Expressions are given for evaluation of the velocity and pressure distribution at the airfoil boundary.
- Fiat C.R. 20 Pursuit Airplane
- The Fiat C.R. 20 has an all metal frame covered with fireproof fabric, except for the area near the engines, which is covered in duraluminum. It is armed with 4 machine guns and is capable of 280 KPH.
- Visual Studies of Cylinder Lubrication [Part] 1: The Lubrication of the Piston Skirt
- Report describes the lubrication characteristics of an aircraft-type piston as visually studied in a V-type engine with a glass cylinder. Information about the movement of the piston, the piston rings, and the oil-control rings and their effect on lubrication is included.
- Wibault Two-Seat Monoplane 8C2: An All-Metal Pursuit and Observation Airplane
- Michel Wibault's two seat monoplane 8C2, is similar to the Parasol pursuit monoplane which preceded it. It has no perishable parts in its structure and needs no special storage or coverings. The sample aeroplane uses a 500 HP Hispano-Suiza engine but can accept a 400-600HP engine from a variety of manufacturers with little difficulty. It uses a two blade tractor propeller.
- Comparison of the performance of a helicopter-type ram-jet engine under various centrifugal loadings
- Report presenting an investigation of an 18-foot-radius helicopter rotor powered by tip-mounted ramjet engines in the helicopter test tower. The engine performance is compared with the performance determined in a previous investigation of a 9-foot-radius rotor with the same engines at similar speeds but with twice the centrifugal forces. Results regarding the propulsive characteristics, minimum specific fuel consumption and corresponding propulsive thrust, and operational characteristics are provided.
- The Dewoitine D.30 Commercial Airplane (French): A High-Wing Cantilever Monoplane
- Circular describing the Dewoitine D.30, which is a commercial high-wing cantilever monoplane. Details of the wing, fuselage, tail surfaces, landing gear, flight controls, electrical equipment, sending-receiving wireless installation, power plant, characteristics, performance, drawings, and photographs are provided.
- Tests of a Thermal Ice-Prevention System for a Wing Leading-Edge Landing-Light Installation
- Report discussing the creation of a thermal ice-prevention system of a bomber-type airplane to provide protection against ice and fog formations on the transparent fairing over the landing light in the wing leading edge. A comparison between the design performance and actual performance showed that the outer-surface heat-transfer coefficient was correctly predicted, but the inner-surface heat-transfer coefficient was four times as large, leading to failure of the plastic fairing.
- Critical combinations of shear and transverse direct stress for an infinitely long flat plate with edges elastically restrained against rotation
- Report presenting an exact solution and a closely concurring approximate energy solution for the buckling of an infinitely long flat plate under combined shear and transverse direct stress with edges elastically restrained against rotation. An appreciable fraction of the critical stress in pure shear may be applied to the plate without any reduction in the transverse compressive stress necessary to produce buckling.
- The Boundary Layer as a Means of Controlling the Flow of Liquids and Gases
- According to one of the main propositions of the boundary layer theory the scarcely noticeable boundary layer may, under certain conditions, have a decisive influence on the form of the external flow by causing it to separate from the wing surface. These phenomena are known to be caused by a kind of stagnation of the boundary layer at the point of separation. The present report deals with similar phenomena. It is important to note that usually the cause (external interference) directly affects only the layer close to the wall, while its indirect effect extends to a large portion of the external flow.
- The D.H. 85 "Leopard Moth" Airplane (British): A Three-Seat Cabin High-Wing Monoplane
- Circular describing the De Havilland "Leopard Moth", which is a three-seat cabin high-wing monoplane with a good cruising speed and fuel efficiency. Details of the components, controls, characteristics, performance, drawings, and photographs are provided.