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Breguet 390 T Commercial Airplane (French): A Ten-Seat All-Steel Sesquiplane
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...
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The Bleriot 110 Airplane (French): A Long-Distance High-Wing Monoplane
Circular presenting a description of the Bleriot 110 which is a long-distance airplane mainly distinguished by its fineness and lightness. Details of the fuselage, shape, wing, and power plant are...
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Nieuport-Delage 590 Military Airplane (French): A Two-Place High-Wing...
Circular presenting a description of the Nieuport-Delage 590 three-engine colonial cantilever monoplane, which meets the requirements of the program established by the French Government. Information is...
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Performance of an exhaust-gas "blowdown" turbine on a nine-cylinder radial...
Report presenting tests on an exhaust-gas turbine with four separate nozzle boxes each covering a 90 degree arc of the nozzle diaphragm and each connected to a pair of adjacent cylinders in a Pratt...
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Baynes Bee Light Airplane (British): A Two-Seat High-Wing Monoplane
Circular presenting a description of the Baynes Bee, which is a light two-seat high-wing monoplane. Details of its unique qualities, design, components, flying qualities, drawings, and photographs are...
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An Investigation of Aircraft Heaters 9: Measured and Predicted Performance of...
Report presenting laboratory testing to determine the thermal output and pressure drop characteristics of the Airesearch and Solar fluted-type exhaust gas-air heat exchangers. The apparatus used in...
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The Short "Valetta" Commercial Seaplane (British): A High-Wing All-Metal...
Circular presenting the Valetta, which is a twin-float seaplane and flying boat with a power plant comprised of three Bristol "Jupiter" XI F geared engines. A description of the design,...
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A pressure-distribution investigation of a fineness-ratio-12.2 parabolic body...
Report presenting a pressure-distribution investigation of a parabolic body of revolution with a fineness ratio of 12.2, which was performed in the 4- by 4-foot supersonic tunnel at Mach number 1.59...
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An Investigation of a Thermal Ice-Prevention System for a C-46 Cargo Airplane...
Report presenting flight tests to establish the dry-air-performance characteristics of a thermal ice-prevention system at various operating conditions and altitudes. Results regarding twin-engine tests...
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The Hanriot H 431 Military Airplane (French): A General Purpose Biplane
Circular presenting a description of the Hanriot H 431, which was designed to meet the requirements of the French War Ministry for general purpose airplanes. Details are provided for the design, flying...
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A general representation for axial-flow fans and turbines
From Summary: "A general representation of fan and turbine arrangements on a single classification chart is presented which is made possible by a particular definition of the stage of an axial-flow fan...
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Avia Pursuit Airplane B.H. 21
Built by the 'Czecho-Slovakian' aircraft factory, AVIA, the B.H. 21, has a top speed of 250 MPH, and carries 120 kg of gasoline and 20 kg of oil, giving it a radius of action of 600-650 km. It is...
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The D.H. "Fox Moth" Commercial Airplane (British): A Three-Passenger Light...
Circular describing the D.H. 83 "Fox Moth", which is a three-passenger light cabin biplane that is considered a commercial airplane despite taking many of its components from the company's existing...
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The Use of Geared Spring Tabs for Elevator Control
Report discussing the use of two types of geared spring tabs for elevator control: ordinary (or ungeared) spring tabs and geared spring tabs. Their use in airplanes of various sizes and in comparison...
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Flight Studies of the Horizontal-Tail Loads Experienced by a Fighter Airplane...
Report presenting flight measurements made on a modern pursuit airplane to determine the approximate magnitude of the horizontal tail loads in accelerated flight. Pressures at a few points were used as...
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Analysis of Heat and Compressibility Effects in Internal Flow Systems and...
Report presenting an analysis of the effects of heat and compressibility in the flow through the internal systems of aircraft. Equations and charts are developed whereby the flow characteristics at key...
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Determination of General Relations for the Behavior of Turbulent Boundary Layers
Report presenting an analysis of data for turbulent boundary layers along wings and bodies of various shapes in order to determine the fundamental variables that control the development of turbulent...
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The Unsteady Lift of a Finite Wing
Note discussing the lift of a finite wing including the calculations and constants for each step of the lift. This information is compared against the lift of an infinite wing. From Summary: "Unsteady...
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The S.P.C.A. 40 T Commercial Airplane (French): An All-Metal Cantilever...
Circular describing the S.P.C.A. 40 T, which is a commercial all-metal cantilever airplane that was guided by the two essential requirements of economy and safety in its design. Details of the design,...
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An Investigation of a Thermal Ice-Prevention System for a C-46 Cargo Airplane...
Report presenting an investigation of a thermal ice-prevention system for a C-46 cargo airplane, which involved flight tests in dry-air and natural-icing conditions at two different laboratories. The...
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The Comper "Streak" Single Seat Airplane (British): A Low-Wing Cantilever...
Circular describing the Comper Streak single-seat low-wing cantilever monoplane. Details of the fuselage, construction, wing, stabilizer, engine, landing gear, characteristics, drawings, and...
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Flight Measurements of the Effect of Various Amounts of Aileron Droop on the...
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...
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The Lagrangian Multiplier Method of Finding Upper and Lower Limits to...
"The theory of Lagrangian multipliers is applied to the problem of finding both upper and lower limits to the true compressive buckling stress of a clamped rectangular plate. The upper and lower limits...
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An Investigation of a Thermal Ice-Prevention System for a C-46 Cargo Airplane...
Report presenting an investigation of a thermal ice-prevention system for a Curtiss-Wright C-46 airplane, including the equipment for the wings, empennage, and windshield. The report is the third in a...
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Lioré-Olivier Airplane: Type 12 Night-Bomber or Type 20 Commercial
Report presenting a description of the Lioré-Olivier Type 12 night bomber, which can also be converted into the Type 20 commercial. A description of the cell of the wings, fuselage, power plant,...
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A Concise Theoretical Method for Profile-Drag Calculation; Advance Report
In this report a method is presented for the calculation of the profile drag of airfoil sections. The method requlres only a knowledge of the theoretical velocity distribution and can be applied...
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D.H. 86 "Express Air Liner" (British): A Four-Engine Biplane
Circular describing the De Havilland Express Air Liner, which is a four-engine two-bay biplane of clean and well-streamlined form. Details of the cabin, controls, fuselage, tail, wings, engines,...
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On the Flow of a Compressible Fluid by the Hodography Method 1: Unification...
Report presenting elementary basic solutions of the equations of motion of a compressible fluid in the hodograph variables are developed and used to provide a basis for comparison in the form of...
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Blériot-Spad 91 Airplane (French): Pursuit Single-Seater, Type "Jockey"
Report presenting a description of the design of the Blériot-Spad 91 airplane. This aircraft has announced a speed of 270 km per hour at 4000 m. It is of all metal construction.
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Rocket-Model Investigation to Determine the Hinge-Moment and Normal-Force...
Report presenting a free-flight investigation of a rocket-powered research model to determine the hinge-moment and normal-force characteristics of a trailing-edge control on a delta wing between Mach...
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An Investigation of a Thermal Ice-Prevention System for a C-46 Cargo Airplane...
Report presenting flight tests conducted to evaluate the effect of a thermal ice prevention system on the aerodynamic performance of a C-46 cargo airplane. The installation of the thermal...
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Effect of Roughness on Properties of Airfoils
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.
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Les Mureaux "130.a2" Observation Airplane (French): A High-Wing Two-Seat...
Circular presenting Les Mureaux 130.A2, which is a high-wing two-seat observation monoplane. A description of the design, performances, components, performance qualities, photographs, and drawings are...
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Reciprocity relations in aerodynamics
From Introduction: "The purpose of the present paper is twofold. First, a close connection will be established between reverse-flow theorems in subsonic and supersonic, steady-state wing theory and...
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The Bernard 80 G.R. Long-Distance Airplane (French) : A Two-Place Cantilever...
Circular presenting a description of the Bernard 80 aircraft. Details are provided on the body shape, wings, ribs, fuel requirements, and flight characteristics.
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The S.P.C.A. 30 M.4 Military Airplane (French): A Multiplace Low-Wing Airplane
Circular describing the S.P.C.A. 30 M.4 multiplace, which is an aircraft designed to carry four people that can be used as a fighter aircraft or a day or night bomber. Details of the design,...
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Wind-Tunnel Investigation of the Effects of Spoilers on the Characteristics...
Report discussing the effects of circular-arc spoilers on the section characteristics of an NACA 66,2-216 airfoil with a 0.25-chord slotted flap. Spoilers were tested on the upper surface of the...
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The S.A.B.C.A. "S.XI" Commercial Airplane (Belgian): A High-Wing...
Circular describing the S.A.B.C.A. S.XI commercial airplane, which is a high-wing semicantilever monoplane. Details of the history of its creation, its design, components, engines, fuel tanks,...
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Lift Theory of Supporting Surfaces: Second Article
Memorandum presenting a description of the hydrodynamic lift theory of supporting services. This report is mainly about the task of finding suitable wing sections for given lift conditions. Formulas...
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An Experimental Investigation of Rectangular Exhaust-Gas Ejectors Applicable...
Report presenting an experimental investigation of rectangular exhaust-gas ejector pump to provide data that would serve as a guide to the design of ejector applications for aircraft engines with...
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The development and application of high-critical-speed nose inlets
From Summary: "An analysis of the nose-inlet shapes developed in previous investigations to represent the optimum from the standpoint of critical speed has shown that marked similarity exists between...
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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,...
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The "I.A.R." Pursuit Airplane (Roumanian) : A One-Place Cantilever Low-Wing...
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.
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Wind-Tunnel Investigation to Determine the Horizontal- and Vertical-Tail...
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....
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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...
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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.
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The Armstrong Whitworth A.W. 16 Military Airplane (British): A Single-Seat...
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,...
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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...
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Ditching Tests With 1/10-Size Model of the Army a-20a Airplane 1: Calm-Water...
Report presenting tests to determine the behavior of landplanes when they are forced to land on the water. The report is incomplete.
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Large-scale low-speed wind-tunnel tests of a model having a 60 degree delta...
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,...
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