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NACA Research Memorandums
5,157
NACA Technical Notes
4,107
NACA Technical Memorandums
1,438
NACA Technical Reports
1,423
NACA Wartime Reports
1,263
NACA Advanced Restricted Reports
533
NACA Memorandum Reports
338
NACA Advanced Confidential Reports
257
NACA Aircraft Circulars
223
NACA Restricted Bulletins
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13,786 Matching Results
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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.
Date:
November 12, 1953
Creator:
Curfman, Howard J., Jr.; Strass, H. Kurt & Crane, Harold L.
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
October 1945
Creator:
Zipkin, M. A. & Sanders, J. C.
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
June 1944
Creator:
Theodorsen, Theodore & Regier, Arthur
Object Type:
Report
System:
The UNT Digital Library
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.).
Date:
May 1943
Creator:
Nitzberg, Gerald E.
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
April 1927
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
August 1932
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
July 1933
Creator:
Rabion, René
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
November 1931
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
August 1930
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
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."
Date:
December 1942
Creator:
Frick, Charles W., Jr. & McCullough, George B.
Object Type:
Report
System:
The UNT Digital Library
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).
Date:
May 1943
Creator:
Jones, Robert T. & Wetmore, Joseph W.
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
November 1930
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
April 1943
Creator:
Johnston, J. Ford
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
June 1928
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
May 1945
Creator:
Stone, Charles S. & Kramer, Walter E.
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
1920
Creator:
Bateman, H.
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
September 1930
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
April 1929
Creator:
Neumann, Kurt
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
October 1944
Creator:
Galvin, Herman B. & Essex, Henry A.
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
March 1927
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
September 1931
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
June 1928
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
September 1937
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
March 1927
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library