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Airplane Performance as Influenced by the Use of a Supercharged Engine

Description: "The question of the influence of a supercharged engine on airplane performance is treated here in a first approximation, but one that gives an exact idea of the advantage of supercharging. Considered here is an airplane that climbs first with an ordinary engine, not supercharged, and afterwards climbs with a supercharged engine. The aim is to find the difference of the ceilings reached in the two cases" (p. 1).
Date: May 1920
Creator: de Bothezat, George
Partner: UNT Libraries Government Documents Department

Notes on the Theory of the Accelerometer

Description: Report discusses several types of accelerometers and how they function. Methods for reducing error and determining the source of the error, including the best placement for the device, are included.
Date: May 1920
Creator: Warner, E. P.
Partner: UNT Libraries Government Documents Department

The Problem of the Helicopter

Description: Report discussing some of the issues regarding the design and operation of helicopters and the theoretical basis behind them. Some particular issues covered include propeller blade design, helicopters in forced descent, horizontal travel, and stability and control.
Date: May 1920
Creator: Warner, E. P.
Partner: UNT Libraries Government Documents Department

Relation of Rib Spacing to Stress in Wing Planes

Description: The stress relations to the fabric and the rib consequent upon a change of spacing between ribs in a wing plane are discussed. Considering the wing plane as a static structure, and ignoring the question of aerodynamic efficiency, it appears that the unit stress in the rib and fabric will remain constant for constant p if the linear dimensions of both rib and fabric are increased alike, viz., if wing and fabric remain geometrically similar. Since the bulge and the structural dimensions remain geometrically similar, the whole distended plane remains so, and hence should have the same pressure distribution and efficiency.
Date: May 1920
Creator: Zahm, A. F.
Partner: UNT Libraries Government Documents Department

Performance of a 300-horsepower Hispano-Suiza airplane engine

Description: The National Bureau of Standards tested a 300-horsepower Hispano-Suiza engine to determine the characteristic performance of the engine at various altitudes. The engine was operated at the ground, at 25,000 feet, and at intermediate altitudes, both at full loads similar to those that would be imposed upon the engine at various speeds by a propeller whose normal full-load speed was 1,800 r.p.m. Friction horsepower also was determined in order that the mechanical efficiency of the engine might be calculated.
Date: May 12, 1920
Creator: Sparrow, S. W. & White, H. S.
Partner: UNT Libraries Government Documents Department

Airplane Superchargers

Description: Discussed here are the principles and operation of aircraft engine superchargers used to maintain and increase engine power as aircraft encounter decreases in the density of air as altitude rises. Details are given on the design and operation of the centrifugal compressors. A method is given for calculating the amount of power needed to drive a compressor. The effects of the use of a compressor on fuel system operation and design are discussed. Several specific superchargers that were in operation are described.
Date: May 1921
Creator: Noack, W. G.
Partner: UNT Libraries Government Documents Department

On a New Type of Wind Tunnel

Description: Discussed here is a new type of wind tunnel, its advantages, the difficulties attendant upon its use, and the special methods required for its operation. The main difference between the new type of wind tunnel and the ones now in operation is the use of a different fluid. The idea is to diminish the effect of viscosity.
Date: May 1921
Creator: Munk, Max
Partner: UNT Libraries Government Documents Department

Rice as food.

Description: Describes the international importance of rice; provides various dishes, recipes, tips, and cooking methods, all revolving around rice as a main foodstuff.
Date: May 1921
Creator: United States. Department of Agriculture. Office of Home Economics.
Partner: UNT Libraries Government Documents Department

N.A.C.A. control position recorder

Description: Report discussing a new instrument is described which is capable of simultaneously recording the position of the three controls of an airplane. The records are taken photographically on a standard N.A.C.A. film drum and the instrument can be quickly installed in any airplane.
Date: May 1922
Creator: Norton, F. H.
Partner: UNT Libraries Government Documents Department

Air traffic

Description: This report presents a recounting of the steps taken by France to establish national and international regulation over air traffic.
Date: May 1922
Creator: Sudre, G.
Partner: UNT Libraries Government Documents Department

Aviation and Insurance

Description: This article considers some of the causes which hinder the development of aircraft insurance. Different risks are discussed as well as the causes of aircraft accidents. Pilot error, poor airdromes, weather conditions, poorly adapted airplanes, and engine failures are all examined and some conclusions are made.
Date: May 1922
Creator: Mayo, R. H.
Partner: UNT Libraries Government Documents Department

The boll-weevil problem.

Description: Describes the characteristics of the boll weevil, the damage that it causes to crops, and methods for its control.
Date: May 1922
Creator: Hunter, W. D. (Walter David), 1875-1925 & Coad, B. R.
Partner: UNT Libraries Government Documents Department

The Choice of Air Routes

Description: The author lists rules for the development and planning of air routes. He uses as examples India and Texas, as well as discussing the need for more landing fields.
Date: May 1922
Creator: Warner, Edward P.
Partner: UNT Libraries Government Documents Department

[Commencement Program for Normal College Training School, May 27, 1922]

Description: Commencement Program for Normal College Training School on May 27, 1922. The program is printed on cardstock and the program reads, "Commencement Program. Normal Training School. Saturday, May 27, 1922. Nine O'Clock. 1. Opening Chorus...Ninth Grade. 2. Address...Mr. Keith. 3. Class Poem...Pauline Rogers. 4. Instrumental Solo...Dora Flyod. 5. Class Prophecy...Lora Blair. 6. Instrumental Solo...Loretta Newton. 7. Essay, "What the Training School Has Meant to Me"...Eugene Wilkins. 8. Class Rhymes and Cartoons...(Owsley Jones. Bill Edwards) 9. Class Prevention...Robert Lomax 10. Delivery of Diplomas...Mr. Odam 11. Closing Chorus...Training School."
Date: May 1922
Creator: Normal College Training School
Partner: UNT Libraries Special Collections

Mechanical Aids to Flight

Description: This report examines the great utility and safety of using instruments when flying. Instruments can be especially useful in conditions when the pilot has trouble spatially orienting himself.
Date: May 1922
Creator: Warner, Edward P.
Partner: UNT Libraries Government Documents Department

Night Flying

Description: Dr. Warner examines the utility and economy of flying at night when flying passengers. Some of the points discussed include lighted landing fields, the possibility of using airships, and the cost of landing fields.
Date: May 1922
Creator: Warner, Edward P.
Partner: UNT Libraries Government Documents Department

Notes on the Design of Latticed Columns Subject to Lateral Loads

Description: "No rational column formula has yet been developed which gives results which are sufficiently precise for the design of airplane members, and consequently it is necessary to fall back upon experimental testing. In order to derive the maximum benefit from experiments, however, it is necessary that the experiments be guided by theory. It is the object here to modify existing formulae that may be obtained with a minimum number of tests" (p. 1).
Date: May 1922
Creator: McCarthy, Charles J.
Partner: UNT Libraries Government Documents Department

Proposed Air Traffic Law

Description: This report presents a brief history of France's attempts to promulgate an internal air traffic law and then provides a draft of proposed national air traffic laws.
Date: May 1922
Creator: Ripert, Georges
Partner: UNT Libraries Government Documents Department

Regulation of Air Traffic

Description: The ways in which the international and internal French air traffic accords interact with each other is outlined in this report. The principal questions covered by the present legislation are as follows: 1) Conditions of safety which must be fulfilled by aircraft; 2) Licenses for members of the crew; 3) Traffic rules to be observed by French and foreign aircraft.
Date: May 1922
Creator: Devaluez
Partner: UNT Libraries Government Documents Department