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On the stability of oscillations of an airplane wing

Description: 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.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Carburetion in Aviation Engines

Description: 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
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Engines and Fuels

Description: 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
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Vorticism in Aeronautics

Description: 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.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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[Letter from Irene Biffle Williams to Byrd Williams, Jr., August 23, 1923]

Description: Letter from Irene Biffle Williams to her husband Byrd Williams, Jr., discussing the need for money to pay for their sons, B. M. (Byrd, III) and John to have their tonsils taken out, as well as for John's circumcision. The letter also delves into their marital troubles as Byrd spends too much time away while working and gambling.
Date: August 23, 1923
Creator: Williams, Irene Biffle
Item Type: Refine your search to only Letter
Partner: UNT Libraries Special Collections
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Absorbing landing shocks

Description: 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.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Effect of Bow Stiffeners in Nonrigid Airships

Description: "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.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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An instrument for recording the position of airplane control surfaces

Description: N.A.C.A. has developed an instrument which makes a continuous record of the angular position of the control surfaces of an airplane, not only in steady flight but during acrobatics as well. It has proven useful in researches into stability and controllability, and from records obtained from it many otherwise obscure details of piloting technique have been available for the instruction of pilots, from novices to seasoned experts.
Date: August 1923
Creator: Ronan, K. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Tests on Built-Up Airplane Struts Having Initial Tension in Outside Fibers

Description: "The conventional airplane strut fails by buckling. The first signs of failure usually are compression cracks on the concave side of bending. It would therefore appear that if an initial tension could be introduced in the outside fibers, this tension would have to be relieved before the compression load could make itself felt" (p. 1).
Date: August 1923
Creator: Schwamb, T. A. & Smith, C. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Thrust and Power Required in Climbing

Description: The following article shows that the phenomena of climbing flight can be determined with sufficient accuracy and represented very clearly, for all flight positions, by means of the thrust diagrams. This method has often given good results.
Date: August 1923
Creator: Koenig, Georg
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Flight Characteristics

Description: Note presenting some comparative performances of new types of airplanes under the same conditions. The airplanes were compared with some that are already in use and give an accurate idea of the progress shown in the new types.
Date: August 1923
Creator: Student
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Regulations Governing the Issuance of Certificates of Airworthiness of Aircraft in France

Description: "These regulations, approved by the Under Secretary of State for Aeronautics, in a ministerial decree 1124/2a, Feb. 19, 1923, cancels the regulations of Aug. 31, 1920, and supplements the decree of Aug. 14, 1920, fixing the conditions under which certificates of airworthiness may be issued,in conformity with Article 5 of said decree" (p. 1).
Date: August 1923
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The N.A.C.A. Recording Tachometer and Angle of Attack Recorder

Description: This note contains photos and descriptions of airplane flight apparatus for use in conjunction with a recording galvanometer. In measuring the angle of attack a variable resistance is used, being controlled by a vane in the airstream. Thus it is only necessary to measure the change of resistance.
Date: August 1923
Creator: Reid, H. J. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Recovery of Gasoline from Uncondensed Still Vapors

Description: Report issued by the Bureau of Mines discussing fuel recovery from uncondensed vapors. As stated in the introduction, "this paper aims to show the possibility of increasing the gasoline yield from the crude by the recovery of considerable gasoline that is now lost by remaining uncondensed" (p. 1). This report includes tables, illustrations, and photographs.
Date: August 1923
Creator: Dow, D. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Marketing Main-Crop Potatoes.

Description: A guide to effective marketing and pricing practices for main-crop potatoes. Includes a detailed explanation of price-tracking methods which can be used to forecast the market season. Describes best practices for selling in various types of markets.
Date: August 1923
Creator: Sherman, Wells A. (Wells Alvord), 1868-1939; Fiske, George B. (George Burnap), 1868- & Miller, O. D. (Olnton Dickman), 1896-
Item Type: Refine your search to only Book
Partner: UNT Libraries Government Documents Department
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