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Trapping and transplanting live beavers.

Description: Describes procedures for trapping and relocating beavers. Relocation is recommended in overpopulated areas or in areas where beavers interfere with farm irrigation.
Date: March 1937
Creator: Couch, Leo K. (Leo King), 1896-
Item Type: Refine your search to only Book
Partner: UNT Libraries Government Documents Department
open access

Bending Tests of Circular Cylinders of Corrugated Aluminum-Alloy Sheet

Description: "Bending tests were made of two circular cylinders of corrugated aluminum-alloy sheet. In each test failure occurred by bending of the corrugations in a plane normal to the skin. It was found, after analysis of the effect of short end bays, that the computed stress on the extreme fiber of a corrugated cylinder is in excess of that for a flat panel of the same basic pattern and panel length tested as a pin-ended column. It is concluded that this increased strength was due to the effects of curva… more
Date: March 1937
Creator: Niles, Alfred S.; Buckwalter, John C. & Reed, Warren D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Full-scale wind-tunnel and flight test of a Fairchild 22 airplane equipped with a Zap flap and Zap ailerons

Description: "A wing equipped with a Zap flap and Zap ailerons was tested on a Fairchild 22 airplane in the full-scale wind tunnel and in flight to determine the effect of the flaps and ailerons on the performance and the control characteristics of the airplane. The flaps were 0.30 of the wing chord and 0.83 of the wing span. Two sets of ailerons having equal areas but different proportions were tested, one set being 0.56 of the semispan and 0.18 of the chord and the other set being 0.46 of the semispan and… more
Date: March 1937
Creator: Dearborn, C. H. & Soulé, H. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Wing-Fuselage Interference - Comparison of Conventional and Airfoil-Type-Fuselage Combinations

Description: Report presenting tests of wing-fuselage combinations employing an airfoil-type fuselage in the variable-density wind tunnel as part of a wing-fuselage program. The models were designed to simulate an existing moderate-size transport airplane of that type. Results regarding some general comparisons, lift distribution and induced drag, and drag in high-speed flight are provided.
Date: March 1937
Creator: Jacobs, Eastman N. & Sherman, Albert
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

[Letter from Paul Kruse to Mrs. John R. Marsh (Margaret Mitchell), 1937-03-25]

Description: Letter from Paul Kruse addressed to Mrs. John R. Marsh courtesy of Mrs. Paula Hartney. In the letter, Kruse congratulates Mrs. Marsh, who wrote under her maiden name, Margaret Mitchell, on the success of her novel Gone with the Wind and asks her to personally autograph a copy of the book that Kruse has included.
Date: March 25, 1937
Creator: Kruse, Paul
Item Type: Refine your search to only Letter
Partner: UNT Libraries Special Collections
open access

Some Causes of Blow-Outs During Drilling and Means of Prevention: with Special Reference to the Gulf Coast Region

Description: Report issued by the U.S. Bureau of Mines discussing the causes of blow-outs and crater formation during the drilling of high-pressure wells. Causes and prevention of well blow-outs are presented. This report includes tables.
Date: March 1937
Creator: Carpenter, Charles B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

On the Actual Loads on Airplane Landing Gears

Description: This investigation was intended to throw light on a number of problems: 1) obtain a time history of the force acting on the gear wheels during take-off and landing runs; 2) obtain the time history of the direction of this force (magnitude of its three components along the coordinate axes); 3) derive conclusions as to the design load factors. In connection with the latter, of special interest was the solution of such problems as: a) the dynamic loads in the three main landing attitudes; b) the p… more
Date: March 1937
Creator: Shiskin, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Some Experiments on the Slipstream Effect

Description: The models designated "Torino 30, 31, 32" are horizontal tail surfaces of rectangular, triangular, and elliptical plan form and all of the same profile section. Tests were carried out with the object being to determine the effect of the propeller slipstream on the aerodynamical characteristics of the horizontal stabilizer. The results presented correspond to a first series of tests made without an interposed wing and in which the distance between the plane of the propeller disk and the tail was… more
Date: March 1937
Creator: Ferrari, C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Experimental Apparatus for the Study of Propellers

Description: The apparatus consists of a universal balance with transmission at variable speeds from 300 to 5,000 rpm and a group directly coupled to the model for speeds of 5 to 30,000 revolutions. This new apparatus was also designed with a torsion meter for measuring the torque. Tests were conducted on the effect of the angle between the propeller axis and the wind direction. The results presented correspond to a first series of tests made without an interposed wing and in which the distance between the … more
Date: March 1937
Creator: Panetti, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Valve-Spring Surge

Description: Test equipment is described that includes a system of three quartz indicators whereby three different pressures could be synchronized and simultaneously recorded on a single oscillogram. This equipment was used to test the reliction of waves at ends of valve spring, the dynamical stress of the valve spring for a single lift of the valve, and measurement of the curve of the cam tested. Other tests included simultaneous recording of the stress at both ends of the spring, spring oscillation during… more
Date: March 1937
Creator: Marti, Willy
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Alternating-current equipment for the measurement of fluctuations of air speed in turbulent flow

Description: From Summary: "Recent electrical and mechanical improvements have been made in the equipment developed at the National Bureau of Standards for measurement of fluctuations of air speed in turbulent flow. Data useful in the design of similar equipment are presented. The design of rectified alternating-current power supplies for such apparatus is treated briefly, and the effect of the power supplies on the performance of the equipment is discussed."
Date: March 1937
Creator: Mock, W. C., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Wind-tunnel investigation of wings with ordinary ailerons and full-span external-airfoil flaps

Description: Report presents an investigation carried out in the NACA 7- by 10-foot wind tunnel of an NACA 23012 airfoil equipped, first, with a full-span NACA 23012 external-airfoil flap having a chord 0.20 of the main airfoil chord and with a full-span aileron with a chord 0.12 of the main airfoil chord on the trailing edge of the main airfoil and equipped second, with a 0.30-chord full-span NACA 23012 external-airfoil flap and a 0.13-chord full-span aileron. The results are arranged in three groups, the … more
Date: March 12, 1937
Creator: Platt, Robert C. & Shortal, Joseph A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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