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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
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13,786 Matching Results
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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.
Date:
September 1945
Creator:
Shaw, Milton C. & Nussdorfer, Theodore
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
June 1926
Creator:
Serryer, J.
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
October 7, 1953
Creator:
Radin, Edward J. & Carpenter, Paul J.
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
February 1931
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
December 1944
Creator:
Hillendahl, Wesley H.
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
January 1945
Creator:
Batdorf, S. B. & Houbolt, John C.
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
March 1930
Creator:
Schrenk, Oskar
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
December 1933
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
The A.N.E.C. IV "Missel Thrush" light airplane
A product of the Air Navigation Engineering Co., the Missel Thrush is a light airplane suitable for private ownership. It is a two seat tractor fuselage biplane with single I interplane struts designed by J. Bewsher.
Date:
November 1926
Creator:
United States. National Advisory Committee for Aeronautics.
Object Type:
Report
System:
The UNT Digital Library
Westland "Wessex" Commercial Airplane (British): A High-Wing Semicantilever Monoplane
Circular presenting a description of the Westland Wessex, which differs from other airplanes of its class because of the mounting of the outboard engines on outriggers from the fuselage and the placing of the engines in such a way that the slipstream does not interfere with the movement of the wing. A description of the design, flight characteristics, blueprints, and photographs are provided.
Date:
October 1930
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
NACA Mach number indicator for use in high-speed tunnels
Report presenting a description of a device for indicating stream Mach number in a high-speed tunnel. It consists of a mechanism for determining the pressure ratio that Mach number is a function of. The instrument is in service in the 8-foot high-speed tunnel and its accuracy has been found adequate for wind-tunnel requirements.
Date:
July 1943
Creator:
Smith, Norman F.
Object Type:
Report
System:
The UNT Digital Library
Profile-Drag Coefficients of Conventional and Low-Drag Airfoils as Obtained in Flight
"The results of flight investigations of the profile drag of several carefully finished conventional and low-drag airfoils are presented. The results indicated that in all cases lower profile-drag coefficients were obtained with the low-drag than with the conventional airfoils over the range of lift coefficient tested and that, for comparable conditions of lift coefficient and Reynolds number, the low-drag airfoils may have profile-drag coefficients which are at least 27 percent lower than the profile-drag coefficients of the conventional airfoils" (p.1).
Date:
May 1944
Creator:
Zalovcik, John A.
Object Type:
Report
System:
The UNT Digital Library
The Short "Calcutta": First British All-Metal Commercial Seaplane
The Calcutta is a large seaplane, with seating for 16 and a payload of 3,400 pounds. A description of the design, construction features, engine installation, specifications, performance, and photographs are provided.
Date:
March 1928
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
On a New Method for Calculating the Potential Flow Past a Body of Revolution
Report presenting a new method for obtaining the velocity potential of the flow about a solid of revolution moving uniformly in the direction of its axis of symmetry in a fluid otherwise at rest. The method is based essentially on the fact that the form of the differential equation for the velocity potential is invariant with regard to conformal transformations in a meridian plane. The general results are applied to a body of revolution obtained by revolving a symmetrical Joukowski profile about its axis of symmetry.
Date:
July 1942
Creator:
Kaplan, Carl
Object Type:
Report
System:
The UNT Digital Library
Fairey "Battle" Medium Bomber Airplane (British): An All-Metal Low-Wing Cantilever Monoplane
Circular presenting a description of the Fairey "Battle", which is the first stressed-skin aircraft they have constructed and is also an all-metal low-wing cantilever monoplane. Details of the fuselage, wings, skin, design, flaps, landing gear, characteristics, performance, drawings, and photographs are provided.
Date:
November 1937
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Large-scale low-speed wind-tunnel tests of a model having a 60 degree delta horizontal canard control surface and wing to obtain static-longitudinal-stability and canard surface hinge-moment data
Report presenting a wind-tunnel investigation of a model equipped with a 60 degree delta wing and a 60 degree delta horizontal all-movable canard control surface to determine the stability, control, and canard-surface hinge-moment characteristics at low speeds and at a Reynolds number of 9 x 10(exp 6). Two longitudinal positions of the canard surface were tested. Results regarding lift and pitching moment, drag, and hinge moment are provided.
Date:
June 17, 1954
Creator:
Burrows, Dale L.
Object Type:
Report
System:
The UNT Digital Library
Ditching Tests With 1/10-Size Model of the Army a-20a Airplane 1: Calm-Water Tests in NACA Tank No.2
Report presenting tests to determine the behavior of landplanes when they are forced to land on the water. The report is incomplete.
Date:
November 1943
Creator:
Dawson, John R. & Jarvis, George A.
Object Type:
Report
System:
The UNT Digital Library
The De Havilland 61 "Canberra" (British): A 6-8 Passenger Airplane
Made for an Australian buyer, the Canberra is capable of carrying a payload of 1900 lbs. with a top speed of 126 M.P.H. At 105-110 M.P.H. it has a range of about 475 miles. It has a single Jupiter VI engine.
Date:
January 1928
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
The Armstrong Whitworth A.W. 16 Military Airplane (British): A Single-Seat Biplane
Circular presenting a description of the A.W. XVI, which is a single-bay staggered biplane of metal construction with a clean external design. A description of the tail unit, control system, cockpit, fuselage, characteristics, performance, drawings, and photographs are provided.
Date:
January 1932
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Nieuport-Delage 640 (French): Commercial High-Wing Monoplane
The Nieuport Delage 640 is a single engine commercial high-wing monoplane of all wood construction, including the fuselage and tail. It's landing gear is hinged in two parts.
Date:
March 1929
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
The Mureaux "Brunet 3C2" Pursuit Airplane
Designed by Engineer Brunet, the 3C2 is an all metal monoplane with two engines and provision for six machine guns and 12 10 Kg. bombs. A description of the design, components, characteristics, flying qualities, drawings, and photographs are provided.
Date:
May 1927
Creator:
Serryer, J.
Object Type:
Report
System:
The UNT Digital Library
Wind-Tunnel Investigation to Determine the Horizontal- and Vertical-Tail Contributions to the Static Lateral Stability Characteristics of a Complete-Model Swept-Wing Configuration at High Subsonic Speeds
Results regarding an investigation to determine the horizontal- and vertical-tail contributions to the static lateral stability of a complete-model swept-wing configuration at high subsonic speeds. Generally, Mach number effects within the range studied and wing effects on the tail contribution were small and the overall trends of the data of the present investigation agreed with those which have been established at low speeds.
Date:
July 10, 1953
Creator:
Wiggins, James W.; Kuhn, Richard E. & Fournier, Paul G.
Object Type:
Report
System:
The UNT Digital Library
The "I.A.R." Pursuit Airplane (Roumanian) : A One-Place Cantilever Low-Wing Monoplane
Circular presenting a description of the I.A.R. pursuit airplane. Details of the design, ailerons, fuselage, fuel tanks, landing gear, and flying qualities are provided.
Date:
May 1931
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
The Dewoitine D 33 Commercial Airplane (French): A Low-Wing Cantilever Monoplane
Circular describing the Dewoitine D 33 commercial airplane, which is a low-wing cantilever monoplane. Details of the wing, fuel tanks, fuselage, landing gear, controls, engine, characteristics, drawings, and photographs are provided.
Date:
June 1931
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library