NASA Technical Reports Server (NTRS) 19930091243: Relative efficiency of direct and geared drive propellers
Book details
- Title
- NASA Technical Reports Server (NTRS) 19930091243: Relative efficiency of direct and geared drive propellers
- Publication year listed
- 1924
- Format
- Public domain eBook
- Reading access
- Free online reader; no registration required
- Source record
- View on Archive.org
About this book
NASA Technical Reports Server (NTRS) 19930091243: Relative efficiency of direct and geared drive propellers
Author: NASA Technical Reports Server (NTRS)
Year: 1924
This report is an extension of NACA-TR-168 and has been prepared for the National Advisory Committee for Aeronautics to show the relative values of various direct and geared drives. It is well known that in general a geared-down propeller has higher efficiency than a direct-drive propeller, but the literature on this subject does not present the data in such form that the aeronautical engineer can readily visualize the effect of gearing. This report has been prepared to show the actual net gain or loss in maximum efficiency due to the use of various modifications of the conventional two-bladed, direct-drive propeller. (author)