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  Partner: UNT Libraries Government Documents Department
 Decade: 1920-1929
 Collection: National Advisory Committee for Aeronautics Collection
Morane-Saulnier 180 light airplane (French) : a single-seat training monoplane
Equipped with a 40 HP Salmson engine, it is a single seat parasol type construction.
Lift theory of supporting surfaces : second article
No Description
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.
Liore-Olivier airplane : type 12 night-bomber or type 20 commercial
No Description
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.
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.
The Francois Villiers marine pursuit airplane
A traditional biplane design allows this craft to function with the speed and maneuverability necessary to perform as a pursuit aircraft while also being able to land on water. It featured retractable landing gear for water landings. It was powered with a 450 HP. Lorraine-Dietrich engine.
The Westland IV commercial monoplane (British)three "Cirrus III" engine
No Description
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.
Bleriot-Spad 91 Airplane (French) : pursuit single-seater, type "Jockey"
This aircraft has announced a speed of 270 km per hour at 4000 m. It is of all metal construction.
The New Interpretation of the Laws of Air Resistance
A closer examination of Newton's formula for air resistance shows that it is well to consider the air as an ordinary fluid, and, indeed for most of the velocities considered, as a non-compressible fluid, so long as the dimensions of the moving body are large in comparison with the mean free path of the particles of air.
Seaplanes for commerce
The advantages of using seaplanes for commercial purposes is discussed.
Calculation of the pressures on aircraft engine bearings
For aircraft engines the three principal operating conditions are idling speed, cruising speed, and diving with the engine stopped. In what follows, we will discuss a method which affords a good idea of the course of pressure for the above mentioned operating conditions. The pressures produced in the driving gear are of three kinds; namely, the pressure due to gases, the pressure due to the inertia of the rotating masses, and the pressure due to the inertia of the reciprocating masses.
Turbulent flow
No Description
Technical Section of Aeronautics
The duties of the Technical Section are listed along with facilities for testing. Different categories of tests are discussed and some sample results included.
Spontaneous combustion of hydrogen
It is shown by the author's experiments that hydrogen which escapes to the atmosphere through openings in the system may burn spontaneously if it contains dust. Purely thermal reasoning can not account for the combustion. It seems to be rather an electrical ignition. In order to determine whether the cause of the spontaneous ignition was thermo-chemical, thermo-mechanical, or thermo-electrical, the experiments in this paper were performed.
Tin soldering of aluminum and its alloys
A method is presented for soldering aluminum to other metals. The method adopted consists of a galvanic application to the surface of the light-metal parts to be soldered, of a layer of another metal, which, without reacting electrolytically on the aluminum, adheres strongly to the surface to which it is applied, and is, on the other hand, adapted to receive the soft solder. The metal found to meet the criteria best was iron.
The protection of duralumin from corrosion
Different types of coatings to protect duralumin from corrosion are discussed. Plating, etching, brushing, coloring, painting and varnishing are all investigated.
Building a full-size glider
The building and flying of a glider is possible for anyone who can use a few basic tools. This report presents some plans and techniques for building your own glider.
Rules and regulations governing the Fokker Soaring-Flight Contest over water or level land
No Description
Replacing the weight of materials consumed on airships
Two methods to replace the weight of gas lost on long airship flights are discussed: condensing the water of combustion and thermic sustentation. In the present article we will discuss the first method, leaving the second to be examined in a subsequent article.
Unsymmetrical forces in an airplane cell
This paper calls attention to the desirability of expanding airplane building regulations to include proof of safety for cases of unsymmetrical loading, at least in the structural members which are thereby specially stressed.
The vector ruling protractor
The theory, structure and working of a vector slide rule is presented in this report. This instrument is used for determining a vector in magnitude and position when given its components and its moment about a point in their plane.
Effects of streamline curvature on lift of biplanes
This report concerns, first, the determination of the lift of a wing which is situated in a curvilinear flow; and second, to calculate the curvature which one wing of a biplane produces in the vicinity of the other.
Device for measuring sound in airplane engines
I will here call attention to a device, constructed according to the system of Gati with which it is possible to measure the sound of an engine and test the effect of a silencer.
Ultra-light alloys and their utilization on aircraft
We will arbitrarily call alloys having a specific gravity of less than 2 "ultra-light", in order to distinguish them from "light" alloys with a specific gravity of 2 to 3. Thus far it has been possible to make ultra-light alloys only by employing a large proportion of magnesium.
Wind-driven propellers (or "windmills")
Wind-driven propellers are much used as sources of power for equipment such as radios. This report establishes the principles involved and acquaints the reader with rules for design of such windmills.
Wind Tunnel of Zeppelin Airship Company
This report discusses the general considerations for the design of aerodynamic laboratories. The dimensions, construction, and components of the wind tunnel are given special attention.
My experience with helicopters
The author recounts his experiments with helicopters. The object of his investigations was to remain stationary in the air for five minutes and to make a closed flight at low altitude. Some of the topics discussed include stabilization, horizontal flight, and directional control.
Two 'Gloster' Airplanes : the 'Grouse II,' - Two-Seat Training Airplane. The 'Grebe II,' Single-Seat Fighter
No Description
New Albatross commercial airplane "L 58"
The "L 58" is a monoplane with cantilever wings joined directly to the fuselage. It accordingly belongs to the new school of airplane construction, as founded and developed in Germany. A list of performance characteristics is included.
All-metal Junkers airplane, type F 13
No Description
The Saunders "Cutty Sark" commercial seaplane (British) : a high-wing monoplane flying boat
No Description
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.
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 equipped with a Hispano-Suiza engine capable of 300 HP.
Lockheed "Vega" airplane : a commercial cabin monoplane
The Vega is a high wing monoplane suitable for commercial purposes. It can seat 6 passengers or 100 cubic feet of cargo.
The Westland "Widgeon III" "Cirrus II: or "Genet II" engine
The Widgeon III is a parasol type monoplane. One of it's strongest features was the high degree of visibility available to the pilot.
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.
The Armstrong Whitworth "Starling" (British) : (single seat fighter)
No Description
Rules and regulations of the 1923 Rhon Soaring-Flight Contest
No Description
Vorticism in aeronautics
Since the war there has been a considerable advance in knowledge on the subject of the airfoil and its behavior. The theory is now sufficiently advanced to make it possible to predict and to calculate certain results which previously could only be attained by direct experiment. The vortex theory receives special attention.
Researches on ailerons and especially on the test loads to which they should be subjected
Aileron calculations have hitherto given greatly differing results according to different authors. It seems to be the general opinion that it is only necessary to give the ailerons such dimensions that the airplane can maneuver well, that the stresses they must undergo are relatively small, and that they are strong enough if their framework is of the order of strength as the wings to which they are attached. This article will show that the problem is really quite complex and that it should receive more attention.
Determining the velocity distribution in the boundary layer of an airfoil fitted with a rotary cylinder
In the closer investigation of the results obtained from a wing model with a rotary cylinder mounted in its leading edge (NACA TM's 307 and 354), the velocity distribution in the vicinity of the surface of the model was determined by a hot-wire anemometer. The results confirmed the belief that the rotary cylinder had considerable effect on the air flow, but demonstrated the fact that the direct influence of the cylinder is confined to a very thin layer in immediate proximity to the surface.
An Introduction to the Laws of Air Resistance of Aerofoils
Report presents methods of calculating air resistance of airfoils under certain conditions of flow phenomena around the airfoil.
Force measurements on airplanes
The most essential phenomena of aircraft should be classified according to their origin and then measured. Information can thus be obtained in a quicker, cheaper, and more reliable way than otherwise would be possible.
Longitudinal balancing of airplanes
The object of the present communication is to determine the best method for locating the center of lift of an airplane and to provide a method for making corrections. The method employed is very simple, being based on the positions given the elevator during flights at different speeds.
"Schneebeli" and "Birger" silencers
The Schneebeli silencer is made entirely of soft sheet steel. It is connected with the engine for receiving the exhaust gases, and consists of two parts: the silencer proper and a conical exit. The Birger silencer, made by the Ad Astra Company in Switzerland, is based on the principle of rapid cooling of the exhaust gases.
Aeromechanical experimentation (wind tunnel tests)
The following report endeavors to show that aeromechanical experimentation has become an important aid to theory.
Engines and fuels
The report considers the effect on engines of the varying types of fuels now in use. Different types of fuels are examined and the influence of physical characteristics are considered.
Aviation spirit - past, present, and future
The volatile fuel of the high-speed internal combustion engine has, in the past, consisted almost exclusively of the lighter distillates from crude petroleum. Alternative and supplementary fuels are discussed such as: tetraline, dekalin, alcohol, cyclo-hexenes.