UNT Libraries Government Documents Department - 1,438 Matching Results

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Wheel Brakes and Their Application to Aircraft

Description: "The advantages to be gained from braking have not been ignored, and in the search for a suitable method many schemes have been suggested and tried. Some of the methods discussed in this paper include: 1) increasing the height of the landing gear; 2) air brakes of various forms; 3) sprags on tail skid and axle; and 4) wheel brakes. This report focuses on the design of wheel brakes and wheel brake controls" (p. 1).
Date: May 1928
Creator: Dowty, G. H.
Item Type: Refine your search to only Report
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Wind-Tunnel Corrections at High Subsonic Speeds Particularly for an Enclosed Circular Tunnel

Description: A review of existing publications on wind-tunnel corrections is followed by an approximate method for determining the corrections due to model and wake displacement and to lift. Relations are investigated for fuselages and wings of various spans in closed circular tunnels. A comparison is made between the computations and the tests in the DVL high-speed wind tunnel.
Date: February 1952
Creator: Göthert, Bernhard Hermann
Item Type: Refine your search to only Report
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Wind-Tunnel Investigation of the Horizontal Motion of a Wing Near the Ground

Description: "By the method of images the horizontal steady motion of a wing at small heights above the ground was investigated in the wind tunnel, A rectangular wing with Clark Y-H profile was tested with and without flaps. The distance from the trailing edge of the wing to the ground was varied within the limits 0.75 less than or = s/c less than or = 0.25. Measurements were made of the lift, the drag, the pitching moment, and the pressure distribution at one section" (p. 1).
Date: September 1946
Creator: Serebrisky, Y. M. & Biachuev, S. A.
Item Type: Refine your search to only Report
open access

Wind-Tunnel Investigations of Diving Brakes

Description: Unduly high diving speeds can be effectively controlled by diving brakes but their employment involves at the same time a number of disagreeable features: namely, rotation of zero lift direction, variation of diviving moment, and, the creation of a potent dead air region.
Date: November 1942
Creator: Fuchs, D.
Item Type: Refine your search to only Report
open access

Wind-Tunnel Investigations on a Changed Mustang Profile with Nose Flap Force and Pressure-Distribution Measurements

Description: "Measurements are described which were taken in the large wind tunnel of the AVA on a rectangular wing "Mustang 2" with nose flap of a chord of 10 percent. Besides force measurements the results of pressure-distribution measurements are given and compared with those on the same profile "without" nose flap" (p. 1).
Date: September 1947
Creator: Krüger, W.
Item Type: Refine your search to only Report
open access

Wind-Tunnel Investigations on Flexural-Torsional Wing Flutter

Description: "For the purpose of testing the theory of an oscillating airfoil of two degrees of freedom, a wing was mounted in the wind tunnel between two walls in such a manner that it could execute vertical (flexural) oscillations as well as torsional oscillations about an arbitrary axis parallel to the span. It was possible to vary the inertia and elasticity parameters and also to increase artificially the negligibly small natural damping of the system. The oscillations were recorded to a strongly magnif… more
Date: September 1938
Creator: Voigt, H.
Item Type: Refine your search to only Report
open access

Wind Tunnel of the Bucharest Polytechnic Institute

Description: This report describes the Bucharest wind tunnel and presents numerous photographs and diagrams. The wind tunnel is of the closed- circuit type, the return being symmetrical with respect t o the longitudinal axis of the tunnel. Th e tunnel is of the horizontal type with a diameter of 3. 2 m (10. 5-ft.) a t the beginning of the entrance cone, and 1.5 m ( 4,92 ft.) at the entrance to the test chamber. The latter, 2 m (6.56 ft.) long, may be either of the open-jet type or enclosed in a cylindrical … more
Date: December 1931
Item Type: Refine your search to only Report
open access

Wind Tunnel Tests of Correction Formula for Wings of Large Span

Description: The theory (wing experiments in an artificial air stream are subject to error, due to the fact that the wing is not situated in an unlimited body of air) by means of which the given drag correction was obtained, was based on various assumptions (e.g., elliptical distribution of lift) which do not always hold true. For this reason it was desirable to test the equation for the additional drag in regard to its reliability and range of application.
Date: May 1924
Creator: Wieselsberger, C.
Item Type: Refine your search to only Report
open access

Wind-Tunnel Tests on Various Types of Dive Brakes Mounted in Proximity of the Leading Edge of the Wing

Description: "The present report is concerned with a series of tests on a model airplane fitted with four types of dive flaps of various shapes, positions, and incidence located near the leading edge of the wing (from 5 to 20 percent of the wing chord). Tests were also made on a stub airfoil fitted with a ventral dive (located at 8 percent of the wing chord). The hinge moments of the dive flaps were measured" (p. 1).
Date: May 1949
Creator: Lattanzi, Bernardino & Bellante, Erno
Item Type: Refine your search to only Report
open access

Wind Vane With Various Applications

Description: A design for a wind vane is presented and various applications are discussed. The equations that can be used to calculate effects on the aircraft using the vane and control assistance that can be provided using the wind vane are provided.
Date: September 1922
Creator: Constantin, M. Louis
Item Type: Refine your search to only Report
open access

Wing Resistance Near the Ground

Description: In the present treatise, a convenient method will be indicated, which makes it possible to determine the polar curve of an airplane at short distances from the ground by a simple short calculation, when the polar curve is known for flight in unlimited space.
Date: April 1922
Creator: Wieselsberger, C.
Item Type: Refine your search to only Report
open access

The Wing With a Pointed Tip

Description: In airplane construction generally one finds an almost exclusive use of wing tips that are practically square end but occasionally those with large rounded tips. For use as a cantilever wing, however, a wing with pointed tips may contain valuable aerodynamic advantages.
Date: October 1922
Creator: v. Prondzynski, Stephan
Item Type: Refine your search to only Report
open access

Wings With Nozzle-Shaped Slots

Description: Even before the publication of the results of the Gottingen experiments on the removal of the boundary layer by suction, experiments with nozzle-slotted wings were begun. A report of those experiments will be given here. Taken collectively, the experiments show that, as regards increasing the lift values, the effect of the air flowing from the nozzle-shaped slots is similar to the effect produced in the case of ordinary slotted wings. The high lift values are attained, however, at the smaller a… more
Date: July 1929
Creator: Katzmayr, Richard
Item Type: Refine your search to only Report
open access

Wire Suspensions in Wind Tunnel Experiments

Description: The elimination of the rigid supports for models and their replacement by wires constitute a great improvement by rendering negligible the interactions of support. There are disadvantages to wire, namely, the aerodynamic resistance is very large and their use is rather difficult because the whole suspension lacks rigidity and easily becomes distorted. We will here investigate the nature of these distortions, evaluate the errors they entail and describe the methods for taking account of or avoid… more
Date: December 1925
Creator: Kerneis, Jean
Item Type: Refine your search to only Report
open access

Wood Versus Metal in Airplane Construction

Description: The aim of this article is to present, in broad outline, a scientific method for solving the problem, "Wood or Metal." It will be shown that structural methods have by no means reached their final perfection. The strength of the different materials is discussed as well as different construction methods.
Date: June 1923
Creator: Seehase, H.
Item Type: Refine your search to only Report
open access

Wood Versus Metal in Airplane Construction

Description: The aim of this article is to present, in broad outline, a scientific method for solving the problem, "Wood or Metal." It will be shown that structural methods have by no means reached their final perfection. The strength of the different materials is discussed as well as different construction methods.
Date: June 1923
Creator: Seehase, H.
Item Type: Refine your search to only Report
open access

Wrinkling of Reinforced Plates Subjected to Shear Stresses

Description: An analysis is made here of the problem of long plates with transverse stiffeners subject to shear. A typical example would be a long Wagner beam. The shear stress is calculated at which the web wrinkles and shear stress becomes a maximum. The equation is solved for both a condition of free support and rigidity of support on the edges.
Date: January 1931
Creator: Seydel, Edgar
Item Type: Refine your search to only Report
open access

Wrinkling Phenomena of Thin Flat Plates Subjected to Shear Stresses

Description: This report covers a series of tests on thin flat elastic strips restrained at two parallel edges and subjected to shear by conversely directed stresses. Theoretical treatments, particularly those of Lilly, Southwell and Skan, and Timoshenko are briefly outlined. The problem to be solved by these tests was to find out whether, and to what extent the conditions and assumptions upon which the calculations are based are complied with in the tests.
Date: January 1931
Creator: Bollenrath, F.
Item Type: Refine your search to only Report
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