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  Partner: UNT Libraries Government Documents Department
 Decade: 1920-1929
 Year: 1928
 Collection: Technical Report Archive and Image Library
The 1926 German seaplane contest

The 1926 German seaplane contest

Date: March 1, 1928
Creator: Seewald, F
Description: The report discusses the problem of rating the various seaplane designs from the 1926 seaplane contest. The whole process of rating consists in measuring the climbing speed, flying weight and carrying capacity of a seaplane and then using these data as the basis of a construction problem.
Contributing Partner: UNT Libraries Government Documents Department
Aerodynamic characteristics of thin empirical profiles and their application to the tail surfaces and ailerons of airplanes

Aerodynamic characteristics of thin empirical profiles and their application to the tail surfaces and ailerons of airplanes

Date: December 1, 1928
Creator: Toussaint, A
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Air force and moment for N-20 wing with certain cut-outs

Air force and moment for N-20 wing with certain cut-outs

Date: January 1, 1928
Creator: Smith, R H
Description: The airplane designer often finds it necessary, in meeting the requirements of visibility, to remove area or to otherwise locally distort the plan or section of an airplane wing. This report, prepared for the Bureau of Aeronautics January 15, 1925, contains the experimental results of tests on six 5 by 30 inch N-20 wing models, cut out or distorted in different ways, which were conducted in the 8 by 8 foot wind tunnel of the Navy Aerodynamical Laboratory in Washington in 1924. The measured and derived results are given without correction for vl/v for wall effect and for standard air density, p=0.00237 slug per cubic foot.
Contributing Partner: UNT Libraries Government Documents Department
Air force tests of sperry messenger model with six sets of wings

Air force tests of sperry messenger model with six sets of wings

Date: January 1, 1928
Creator: Shoemaker, James M
Description: The purpose of this test was to compare six well-known airfoils, the R.A.F 15, U.S.A. 5, U.S.A. 27, U.S.A. 35-B, Clark Y, and Gottingen 387, fitted to the Sperry Messenger model, at full scale Reynolds number as obtained in the variable density wind tunnel of the National Advisory Committee for Aeronautics; and to determine the scale effect on the model equipped with all the details of the actual airplane. The results show a large decrease in minimum drag coefficient upon increasing the Reynolds number from about one-twentieth scale to full scale. Maximum lift coefficient was increased with increasing scale for all the airfoils except the Gottingen 387, for which it was slightly decreased. A comparison is made between the results of these tests and those obtained from tests made in this tunnel on airfoils alone. (author).
Contributing Partner: UNT Libraries Government Documents Department
Airplane strength calculations and static tests in Russia : an attempt at standardization

Airplane strength calculations and static tests in Russia : an attempt at standardization

Date: September 1, 1928
Creator: unknown
Description: We are here giving a summary of the rules established by the Theoretical Section of the Central Aerodynamic Institute of Moscow for the different calculation cases of an airplane. It appears the engineers of the Aerodynamic Institute considered only thick or medium profiles. For these profiles they have attempted to increase the safety when the center of pressure moves appreciably toward the trailing edge.
Contributing Partner: UNT Libraries Government Documents Department
Annual report of the National Advisory Committee for Aeronautics (13th).administrative report including Technical Reports nos. 257 to 282

Annual report of the National Advisory Committee for Aeronautics (13th).administrative report including Technical Reports nos. 257 to 282

Date: January 1, 1928
Creator: unknown
Description: Report includes the National Advisory Committee for Aeronautics letter of submittal to the President, Congressional report, summaries of the committee's activities and research accomplished, bibliographies, and financial report.
Contributing Partner: UNT Libraries Government Documents Department
The Armstrong Whitworth "Starling" (British) : (single seat fighter)

The Armstrong Whitworth "Starling" (British) : (single seat fighter)

Date: September 1, 1928
Creator: unknown
Description: None
Contributing Partner: UNT Libraries Government Documents Department
An automatic speed control for wind tunnels

An automatic speed control for wind tunnels

Date: February 1, 1928
Creator: Zahm, A F
Description: Described here is an automatic control that has been used in several forms in wind tunnels at the Washington Navy Yard. The form now in use with the 8-foot tunnel at the Navy Yard is considered here. Details of the design and operation of the automatic control system are given. Leads from a Pitot tube are joined to an inverted cup manometer located above a rheostat. When the sliding weight of this instrument is set to a given notch, say for 40 m.p.h, the beam tip vibrates between two electric contacts that feed the little motor. Thus, when the wind is too strong or too weak, the motor automatically throws the rheostat slide forward and backward. If it failed to function well, the operator would notice the effect on his meniscus, and would operate the hand control by merely pressing the switch.
Contributing Partner: UNT Libraries Government Documents Department
Aviation fuels : with especial reference to "white spirit."

Aviation fuels : with especial reference to "white spirit."

Date: February 1, 1928
Creator: Dumanois, P
Description: Gasoline, the fuel now used, is an extremely volatile and inflammable liquid capable of forming explosive mixtures, the cause of many catastrophes in aviation. It is therefore of special interest to investigate the possibility of using fuels which, while being less volatile than gasoline, would nevertheless enable this engine to function satisfactorily.
Contributing Partner: UNT Libraries Government Documents Department
The Avro "Avian III" Airplane (British)

The Avro "Avian III" Airplane (British)

Date: April 1, 1928
Creator: unknown
Description: The Avro Avian has a lift capacity of 828 lbs (including pilot). It is equipped with the Mark II A.D.C. Cirrus engine.
Contributing Partner: UNT Libraries Government Documents Department
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