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N.A.C.A. Flight-Path Angle and Air-Speed Recorder

Description: "A new trailing bomb-type instrument for photographically recording the flight-path angle and air speed of aircraft in unaccelerated flight is described. The instrument consists essentially of an inclinometer, air-speed meter and a film-drum case. The inclinometer carries an oil-damped pendulum which records optically the flight-path angle upon a rotating motor-driven film drum. The air-speed meter consists of a taut metal diaphragm of high natural frequency which is acted upon by the pressure … more
Date: April 1926
Creator: Coleman, Donald G.
Item Type: Refine your search to only Report
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The A.N.E.C. IV "Missel Thrush" light airplane

Description: 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.
Date: November 1926
Creator: United States. National Advisory Committee for Aeronautics.
Item Type: Refine your search to only Report
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Aerodynamic Characteristics of Airfoils 4: Continuation of Reports Nos. 93, 124, and 182

Description: This collection of data on airfoils has been made from the published reports of a number of the leading Aerodynamic Laboratories of this country and Europe. The information which was originally expressed according to the different customs of the several laboratories is here presented in a uniform series of charts and tables suitable for the use of designing engineers and for purposes of general reference. The authority for the results here presented is given as the name of the laboratory at whi… more
Date: September 1926
Item Type: Refine your search to only Report
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Air force and moment for N-20 wing with certain cut-outs

Description: From Introduction: "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 192… more
Date: November 29, 1926
Creator: Smith, R. H.
Item Type: Refine your search to only Report
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The air forces on a model of the sperry messenger airplane without propeller

Description: From Summary: "This is a report on a scale effect research which was made in the variable-density wind tunnel of the National Advisory Committee for Aeronautics at the request of the Army Air Service. While the present report is of a preliminary nature, the work has progressed far enough to show that the scale effect is almost entirely confined to the drag."
Date: 1926%
Creator: Munk, Max M. & Diehl, Walter S.
Item Type: Refine your search to only Report
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Albatros Commercial Airplane L 73

Description: The Albatros was a two engine commercial biplane carrying 2 pilots, eight passengers, and 160 KG of baggage. The framework is metal, the wings having plywood and fabric over the steel tubing. The L 73 was the first 2 engine biplane to be made in Germany.
Date: September 1926
Creator: Rühl, Karl & Wiederhold, Hasso
Item Type: Refine your search to only Report
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Albert TE-1 Training Airplane

Description: The TE-1 is designed for the economical training of pilots and is a single seat parasol cantilever monoplane. It is nearly entirely made of wood, using a 40 HP. air-cooled Salmson A.D. 9 engine, and weighs 255 kg empty.
Date: December 1926
Item Type: Refine your search to only Report
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All-Metal Junkers Airplane, Type F 13

Description: Circular describing the all-metal Junkers airplane, specifically the F 13 type. The primary characteristics of the airplanes are the thick cantilever Junkers wing without stay-wires and the all-metal construction. A description of the design, flight characteristics, and some photographs are provided.
Date: May 1926
Item Type: Refine your search to only Report
open access

Analyses of Virginia Coals

Description: Report containing several articles discussing coal in the state of Virginia. These articles cover geographic deposition of coal, coal production, mining methods, and analyses of coal samples. Index begins on page 71.
Date: 1926
Creator: Eby, J. Brian, (James Brian), 1896-; Campbell, Marius Robinson, 1858-1940; Paul, J. W.; Fieldner, Arno Carl, 1881-1966; Cooper, Harry Mac, 1882-; Osgood, F. D., 1888-1935 et al.
Item Type: Refine your search to only Report
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Approximate Calculation of the Static Longitudinal Stability of Airplanes

Description: It seems desirable to have some simple method for calculating quickly and with sufficient accuracy: 1) the correct position of the center of gravity; 2) the requisite tail-group dimensions; 3) and the course of the wing and tail-group moments. In out deductions, we will first replace the biplane (disregarding the effect of stagger, decalage and induced drag) by an equivalent monoplane, whose dimensions and position in space can be approximately determined in a simple manner.
Date: November 1926
Creator: Bienen, Theodor
Item Type: Refine your search to only Report
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Avia Pursuit Airplane B.H. 21

Description: 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. Details of the design, structure, wings, stabilizer, fuselage, controls, fuel tanks, landing gear, tail, characteristics, performances, drawings, and photographs are provided.
Date: November 1926
Creator: Serryer, J.
Item Type: Refine your search to only Report
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The Avro "Avian" Airplane: 65 HP. Armstrong-Siddeley "Genet" Engine

Description: The Avro Avian, designed by Mr. Chadwick of A.V. Roe & Co., Ltd. has a very low structural weight (estimated at 750 lbs. empty) but with sufficient structural integrity to be eligible of an "Aerobatics" certificate from the British Air Ministry. It can be configured as a monoplane, or a biplane with seaplane floats. It is designed for economical production.
Date: October 1926
Item Type: Refine your search to only Report
open access

Beneficiation and Utilization of Georgia Clays

Description: From Introduction: "This report is divided into six parts as follows: (1) Occurrence of clays in Georgia and the source of the clays tested; (2) washing tests; (3) physical test; (4) utilization of kaolins white ware; (5) utilization of clays in refractories; and (6) utilization of clays in face brick."
Date: 1926
Creator: Stull, R. T. & Bole, G. A.
Item Type: Refine your search to only Report
open access

The Bowie-Gavin Process: Its Application to the Cracking of Tars and Heavy Oils, Also to the Recovery of Oil from Oil-Soaked Sands or Shales, or from Oil Shales

Description: Technical paper issued by the Bureau of Mines over the Bowie-Gavin process. As stated in the introduction, "this paper describes a process and an apparatus designed to recover oil from such deposits" (p. 1). The results of experiments conducted using this process are discussed. This paper includes tables, illustrations, and photographs.
Date: 1926
Creator: Bowie, C. P.
Item Type: Refine your search to only Report
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