10 Matching Results

Search Results

Results: 1 - 10
open access

Load Assumptions for Calculating the Strength of Airplanes

Description: "The following load assumptions shall be taken as the basis of the strength calculations. Certain definite load conditions (e.g. of flight, control, landing and transport) shall be assumed. The loads shall be assumed to be safe loads, constant or only slowly variable, and the inertia forces due to elastic deformation are accordingly disregarded. The external forces, the force of gravity and the inertia forces on the whole airplane shall produce a condition of equilibrium" (p. 1).
Date: September 1930
Partner: UNT Libraries Government Documents Department
open access

Effects of the End Fixation of Airplane Struts

Description: The main purpose of this report is to give references to literature on the subject of end fixation of airplane struts and also to furnish the constructor with a general survey of the simplest methods for estimating the end-fixation effect.
Date: September 1930
Creator: Teichmann, Alfred
Partner: UNT Libraries Government Documents Department
open access

Flight Tests for the Determination of Static Longitudinal Stability

Description: The accuracy of the instruments used for flight test measurements has been inadequate so a new series of tests were commissioned with the development of an accurate elevator setting recorder.
Date: September 1930
Creator: Blenk, Hermann
Partner: UNT Libraries Government Documents Department
open access

Alterations and Tests of The "Farnboro" Engine Indicator

Description: "The 'Farnboro' electric indicator was tested as received from the manufacturers, and modifications made to the instrument to improve its operation. The original design of disk valve was altered so as to reduce the mass, travel, and seat area. Changes were made to the recording mechanism, which included a new method of locating the top center position on the record. The effect of friction on the motion of the pointer while taking motoring and power cards was eliminated by providing a means of p… more
Date: September 1930
Creator: Collins, John H., Jr.
Partner: UNT Libraries Government Documents Department
open access

An Investigation of Airplane Landing Speeds

Description: "This paper describes an investigation on airplane landing speeds which was made to determine the applicability of accepted aerodynamic theory to the prediction of this particular performance characteristic. The experimental work consisted in measuring the landing speed of several monoplanes by a new photographic method. The results of these tests supplemented by available information regarding biplanes were compared with predictions made with basic aerodynamic theory" (p. 1).
Date: September 1930
Creator: Ridley, Kenneth F.
Partner: UNT Libraries Government Documents Department
open access

Determination of the Maximum Control Forces and Attainable Quickness in the Operation of Airplane Controls

Description: "This report is intended to furnish bases for load assumptions in the designing of airplane controls. The maximum control forces and quickness of operation are determined. The maximum forces for a strong pilot with normal arrangement of the controls is taken as 1.25 times the mean value obtained from tests with twelve persons. Tests with a number of persons were expected to show the maximum forces that a man of average strength can exert on the control stick in operating the elevator and ailero… more
Date: September 1930
Creator: Hertel, Heinrich
Partner: UNT Libraries Government Documents Department
open access

The Breguet 270 General-Purpose Military Airplane (French): A Two-Seat All-Steel Sesquiplane

Description: Circular presenting a description of the Breguet 270 general-purpose military airplane, which is a two-set, all-steel sesquiplane. Details regarding the basic principles of design, construction, components, flying qualities, drawings, and photographs are provided.
Date: September 1930
Creator: De Marolles, R. J.
Partner: UNT Libraries Government Documents Department
open access

Coefficients of discharge of fuel-injection nozzles for compression-ignition engines

Description: "This report presents the results of an investigation to determine the coefficients of discharge of nozzles with small, round orifices of the size used with high-speed compression-ignition engines. The injection pressures and chamber back pressures employed were comparable to those existing in compression-ignition engines during injection. The construction of the nozzles was varied to determine the effect of the nozzle design on the coefficient. Tests were also made with nozzles assembled in an… more
Date: September 11, 1930
Creator: Gelalles, A. G.
Partner: UNT Libraries Government Documents Department
open access

Some approximate equations for the standard atmosphere

Description: This report contains the derivation of a series of simple approximate equations for density ratios and for the pressure ratio in the standard atmosphere. The accuracy of the various equations is discussed and the limits of applications are given. Several of these equations are in excellent agreement with the standard values.
Date: September 19, 1930
Creator: Diehl, Walter S.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen