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Static thrust analysis of the lifting airscrew / by Montgomery Knight and Ralph A. Hefner.
- Format:
- Book
- Government document
- Author/Creator:
- Knight, Montgomery, author.
- Hefner, Ralph Aubrie, 1902- author.
- Series:
- Technical note (United States. National Advisory Committee for Aeronautics) ; 626.
- Technical note / National Advisory Committee for Aeronautics ; No. 626
- Language:
- English
- Subjects (All):
- Rotors--Testing.
- Rotors.
- Lift (Aerodynamics).
- Mathematical analysis.
- Physical Description:
- 1 online resource (41 pages, 19 unnumbered pages) : illustrations.
- Place of Publication:
- Washington, [D.C.] : National Advisory Committee for Aeronautics, 1937.
- Summary:
- This report presents the results of a combined theoretical and experimental investigation conducted at the Georgia School of Technology on the static thrust of the lifting airscrew of the type used in modern autogiros and helicopters.
- The theoretical part of this study is based on Glauert's analysis but certain modifications are made that further clarify and simplify the problem. Of these changes the elimination of the solidity as an independent parameter is the most important.
- The experimental data were obtained from tests on four rotor models of two, three, four, and five blades and, in general, agree quite well with the theoretical calculations.
- The theory indicates a method of evaluating scale effects on lifting airscrews, and these corrections have been applied to the model results to derive general full-scale static thrust, torque, and figure-of-merit curves for constant-chord, constant-incidence rotors.
- Notes:
- Description based on online resource, PDF version; title from title screen (viewed June 18, 2020).
- "December 1937."
- No Federal Depository Library Program (FDLP) item number.
- Includes bibliographical references (page 33).
- Electronic reproduction. Denton, Texas : University of North Texas, 2011. Electronic reproduction from print master produced by University of North Texas.
- Other Format:
- Print version: Knight, Montgomery Static thrust analysis of the lifting airscrew
- OCLC:
- 1159597637
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