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Air-Flow Experiments

Description: This report describes the apparatus used to take air-flow photographs. The photographs show chiefly the spiral course of the lines of flow near the tip of the wing. They constitute therefore a visual presentation of the phenomena covered by airfoil theory.
Date: May 1924
Creator: Wieselsberger, C.
Partner: UNT Libraries Government Documents Department
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The Effect of Wind Tunnel Turbulence Upon the Forces Measured on Models

Description: These tests were undertaken to find the effect of turbulence in the air stream upon the lift and drag forces measured on models in the four-foot wind tunnel at the Massachusetts Institute of Technology. Maximum lifts and minimum drags were measured on Gottingen-387 and R.A.F.-15 airfoils, minimum drag on a streamlined strut, and the static pressure gradients for different conditions of turbulence were investigated. The results show that the scale of the turbulence (as defined in this report) ha… more
Date: May 1924
Creator: LePage, W. L. & Nichols, J. T.
Partner: UNT Libraries Government Documents Department
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High Altitude Flying

Description: This note investigates the effect of high altitude or low atmospheric pressure upon the operation of an engine and the effect of the low pressure and lack of oxygen and of the very low temperatures upon the pilot and upon the performance of the airplane itself.
Date: May 1924
Creator: King, Paul B. & Carroll, Thomas
Partner: UNT Libraries Government Documents Department
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Light Airplanes Which Participated in Contest at Lympne, England, October, 1923

Description: "The purpose of this memorandum is to present in a concise form a description, with drawings, of the most practical light airplanes participating in the meet at Lympne, England, in October, 1923. Features, which are particularly suitable for this type of aircraft, are described and a special reference is made to achievements which indicate progress and possibilities both from a commercial and a military point of view" (p. 1).
Date: May 1924
Partner: UNT Libraries Government Documents Department
open access

A method of determining the dimensions and horsepower of an airship for any given performance

Description: A simple and easily applied method of calculating the dimensions and horsepower necessary for an airship to have any given performance is described and illustrated by examples. The method includes means for estimating the changes in performance or in size when modifications or new features are introduced into a design, involving increase or saving in weights, or changes in resistance or propulsive efficiency.
Date: May 1924
Creator: Burgess, C. P.
Partner: UNT Libraries Government Documents Department
open access

Ultra-Light Alloys and Their Utilization on Aircraft

Description: Memorandum presenting an overview of ultra-light alloys and their potential use on an aircraft. A definition of ultra-light alloys, some of the present possibilities of ultra-light alloys, and some of the principles governing the use of the alloys in aircraft are provided.
Date: May 1924
Creator: Portevin, A. M. & DeFleury, R.
Partner: UNT Libraries Government Documents Department
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.
Partner: UNT Libraries Government Documents Department
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