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A method for studying the transient blade-flapping behavior of lifting rotors at extreme operating conditions
- Author / Creator
- Available as
- Online
- Summary
-
A method is presented for studying the transient behavior of the flapping motion, as well as for calculating the steady-state flapping amplitudes, of free-to-cone and seesaw rotors operating at ext...
A method is presented for studying the transient behavior of the flapping motion, as well as for calculating the steady-state flapping amplitudes, of free-to-cone and seesaw rotors operating at extreme flight conditions. The method is general and can be applied to blades of any airfoil section, mass distribution, twist, plan-form taper, root cutout, and flapping-hinge geometry. Stall and compressibility effects can also be accounted for.
The method is illstrated by examples of blade-stability calculations of free-to-cone and seesaw rotors at tip-speed ratios equal to or greater than 1.0 and of the transient flapping response of a free-to-cone rotor to arbitrary control inputs at a tip-speed ratio equal to 0.3.
Details
- Creator
- by Alfred Gessow and Almer D. Crim
- Format
- Books
- Language
- English
- Contributors
- Publication
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- Washington, D.C. : National Advisory Committee for Aeronautics, 1955
- Physical Details
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- 1 online resource (27 pages) : illustrations
- data file
- OCLC
- on1380396952
- Title from title screen (viewed May 26, 2023)
- "Langley Aeronautical Laboratory."
- Date of issue: January 1955.
- Report numbers NACA-TN-3366.
- Includes errata sheet.
- Includes bibliographical references (page 17)
- Electronic reproduction. Denton, Texas : University of North Texas, 2011. Electronic reproduction from print master produced by University of North Texas.