Airplane Performance Calculations by Means of Logarithmic Graphs

380146

01/01/1938

Event
Pre-1964 SAE Technical Papers
Authors Abstract
Content
THE ideas presented in this paper are designed to eliminate all the faults of previous formulas or charts for finding airplane performance, and to provide a method which will be satisfactory for all types of propellers, engines, and airplanes. The same equation for the power required is retained as was used previously, but corrections are applied to it to take care of the increase in power as the burble points are reached.
By a simple device employing two parameters determined by the airplane dimensions, the power-required curve is generalized and then plotted logarithmically. The power-available curve is generalized in a similar manner and likewise plotted logarithmically. Then, by a simple calculation, the method of placing properly these two generalized curves one over the other is found. This procedure results in being able to read directly with no plotting the values from which the performance can be obtained.
Meta TagsDetails
DOI
https://doi.org/10.4271/380146
Pages
10
Citation
Driggs, I., "Airplane Performance Calculations by Means of Logarithmic Graphs," SAE Technical Paper 380146, 1938, https://doi.org/10.4271/380146.
Additional Details
Publisher
Published
Jan 1, 1938
Product Code
380146
Content Type
Technical Paper
Language
English