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Calculation of Wing Spars
A simplified formula for calculating wing spars is presented.
Date:
August 1921
Creator:
Ratzersdorfer, Julius
System:
The UNT Digital Library
Calculation of Wing Spars
The author presents a comparison and combination of the numerical and geometrical determinations of the maximum M, when calculating the maximum bay moment.
Date:
August 1921
Creator:
Müller-Breslau, H.
System:
The UNT Digital Library
Calculation of Wing Spars
The author presents a comparison and combination of the numerical and geometrical determinations of the maximum M, when calculating the maximum bay moment.
Date:
August 1921
Creator:
Müller-Breslau, H.
System:
The UNT Digital Library
High Efficiency of Seaplanes
A table is presented which includes data for calculating the index of efficiency. The author uses this data to conclude that seaplanes cannot be considered inferior to terrestrial airplanes.
Date:
August 1921
Creator:
Pegna, G.
System:
The UNT Digital Library
Large German airship stations
"It is profitable to examine the organization and equipment of the German airship stations. The stations best adapted for serving as the basis of this study were chiefly constructed by the German Navy, during the war, for exclusively military purposes and do not therefore entirely satisfy the conditions of exploitation required for a civilian air service. The requisite modifications for satisfying the latter conditions may nevertheless be readily determined according to circumstances" (p. 1).
Date:
August 1921
Creator:
Sabatier, J.
System:
The UNT Digital Library
Problem of Landing
The author discusses various aspects of landing aircraft such as the actual process of touchdown and the problems associated with the tail skid touching the ground before the landing gear.
Date:
August 1921
Creator:
Pistolesi, E.
System:
The UNT Digital Library
Shape and Strength of Seaplane Under-Structures With Special Regard to Seaworthiness
This report presents experiments and calculations for the purpose of determining the landing gear requirements upon the water. Moving pictures are given which furnish data and also may give both the magnitude and direction of the forces acting. Different classes of seaplanes are examined and proposals for calculation instructions are given.
Date:
August 1921
Creator:
Lewe, Victor
System:
The UNT Digital Library
Commercial Aircraft in War
The difference between aircraft for commercial and wartime uses is delineated, but the interchangability between the two is also discussed. Airships in both roles are also presented.
Date:
August 1922
Creator:
Warner, Edward P.
System:
The UNT Digital Library
Coutinho-Sacadura Course Corrector
"The Coutinho-Sacadura course corrector is an instrument with which, knowing the angles of drift of two different courses, we may determine by simple readings: a) direction and velocity of wind; b) correction to be made in course followed by compass, in order to fly in a given direction; c) ground-speed of aircraft, the resultant of its air speed and the velocity of the wind" (p. 1).
Date:
August 1922
Creator:
Cabral, Sacadura
System:
The UNT Digital Library
Description of the Klemperer Wing Strain Meter (Accelerometer)
The wing strain meter enables a pilot to know the strain on lifting surfaces and to warn him of the safe limits which may not be exceeded. In wing strain the most important factors are the force of gravity and the force of lift which gives the measure of the sustaining force, and their components which are perpendicular to the lifting surfaces. This reports methods for using the wing strain meter.
Date:
August 1922
Creator:
unknown
System:
The UNT Digital Library
Illumination of Airways and Landing Fields
Different illumination systems for landing fields are presented which include fixed beacons, signal guns, and light patterns such as T's and crosses. Some of the advantages and disadvantages for each of the lighting patterns are provided.
Date:
August 1922
Creator:
Stadthagen, Paul
System:
The UNT Digital Library
Police Regulation of Aircraft
Different aspects of aircraft regulation are discussed such as: protecting the public; the restriction of flights over crowds; regulations of wing-walkers.
Date:
August 1922
Creator:
Warner, Edward P.
System:
The UNT Digital Library
Potentialities of the Parachute
The development of the parachute is presented as well as the future possibilities. The primary topics covered include allowing for wind in design, the parachutes used at balloon exhibitions, parachute use in the war, the delayed-opening type of parachute, and the use of parachutes on commercial airplanes.
Date:
August 1922
Creator:
Warner, Edward P.
System:
The UNT Digital Library
Safety in Flight
Report presenting some topics related to safety in flight and the importance of having accurate statistics and information regarding aircraft problems and accidents. Some of the topics provided included perverted statistics, the British accident record, unregulated air traffic in America, and air mail in bad weather.
Date:
August 1922
Creator:
Warner, Edward P.
System:
The UNT Digital Library
Test of Specimen of Wood of Longerons of the S.E.5 Airplane After Seven Years' Service
"A transverse test was made of the wood sample using a 5,000 pound Olsen testing machine, the deflection under load being measured by means of a Wissler dial. The results of the transverse test are given and the stress-strain curve is attached" (p. 1).
Date:
August 1922
Creator:
unknown
System:
The UNT Digital Library
Turn Indicator
This report presents a study of an instrument that can warn the pilot of the turning of his airplane. This instrument must satisfy three conditions: 1) It must give useful indication immediately from take-off; 2) The indications must be instantaneous and require no exertion by the pilot; 3) The indicator must be sensitive only to changes of orientation in the horizontal plane. Different solutions are presented such as a gyroscope driven by the suction of a Venturi tube.
Date:
August 1922
Creator:
de Guiche, A. de Gramont
System:
The UNT Digital Library
Utilization Conditions of Different Types of Airplanes
This report presents examples of different methods of comparing aircraft mathematically. In the example given a biplane and monoplane are compared as to what speed one type of airplane is better at than another.
Date:
August 1922
Creator:
De Marolles
System:
The UNT Digital Library
Absorbing landing shocks
Report discussing tires, steel springs, hydraulic shock absorbers, and axle travel are all examined in relation to absorbing landing shocks.
Date:
August 1923
Creator:
Warner, Edward P.
System:
The UNT Digital Library
Bird Flight: Hints to Be Obtained From It for Use in Aviation
This report is a comprehensive study of birds and how their shapes have been molded by the resistance of the air. 500 species of birds were studied and nearly 30,000 ratios calculated. The author makes a distinction between flapping and soaring flight.
Date:
August 1923
Creator:
Magnan
System:
The UNT Digital Library
Carburetion in Aviation Engines
This report tries to solve the problem of supplying the engine cylinders with a mixture of fuel and air in the right ratio to obtain the greatest power from the engine with the least consumption of fuel.
Date:
August 1923
Creator:
Poincaré
System:
The UNT Digital Library
The Effect of Bow Stiffeners in Nonrigid Airships
"It is now well known that all nonrigid airships constructed at the present time have bow stiffeners consisting of battens curved to the form of the envelope and designed to hold the nose of the ship in its true form despite the very large pressure which exists at the extreme forward point. The effect of the stiffeners is to reduce considerably the apparent pressure which has to be maintained inside the envelope in order to prevent the nose from caving in" (p. 1).
Date:
August 1923
Creator:
Warner, Edward P.
System:
The UNT Digital Library
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.
Date:
August 1923
Creator:
unknown
System:
The UNT Digital Library
On the stability of oscillations of an airplane wing
During a flight with a Van Berkel W. B. seaplane it was observed that the wing could perform violent oscillations. A theoretical and experimental investigation led to the conclusion, that in some cases an unstable oscillation of the wing-aileron system under the influence of the elastic and aerodynamic forces is possible without further external causes.
Date:
August 1923
Creator:
Von Baumhauer, A. G. & Koning, C.
System:
The UNT Digital Library
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.
Date:
August 1923
Creator:
Sayers, W. H.
System:
The UNT Digital Library