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Record Details

Record 1 of 58527
Transonic aeroelasticity analysis for rotor blades
Author and Affiliation:
Chow, Chuen-Yen(Colorado, University, Boulder, United States)
Chang, I-Chung(NASA Ames Research Center, Moffett Field, CA, United States)
Gea, Lie-Mine(Colorado Univ., Boulder, CO, United States)
Abstract: A numerical method is presented for calculating the unsteady transonic rotor flow with aeroelasticity effects. The blade structural dynamic equations based on beam theory were formulated by FEM and were solved in the time domain, instead of the frequency domain. For different combinations of precone, droop, and pitch, the correlations are very good in the first three flapping modes and the first twisting mode. However, the predicted frequencies are too high for the first lagging mode at high rotational speeds. This new structure code has been coupled into a transonic rotor flow code, TFAR2, to demonstrate the capability of treating elastic blades in transonic rotor flow calculations. The flow fields for a model-scale rotor in both hover and forward flight are calculated. Results show that the blade elasticity significantly affects the flow characteristics in forward flight.
Publication Date: Jan 01, 1989
Document ID:
19890060298
(Acquired Nov 28, 1995)
Accession Number: 89A47669
Subject Category: STRUCTURAL MECHANICS
Report/Patent Number: AIAA PAPER 89-2212
Document Type: Conference Paper
Publication Information: (SEE A89-47626 21-02)
Publisher Information: United States
Meeting Information: AIAA Applied Aerodynamics Conference; 7th; July 31-Aug. 2, 1989; Seattle, WA; United States
Meeting Sponsor: AIAA
Contract/Grant/Task Num: NCC2-508
Financial Sponsor: NASA; United States
Organization Source: Colorado Univ.; Boulder, CO, United States
NASA Ames Research Center; Moffett Field, CA, United States
Description: 12p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: AEROELASTICITY; ROTOR BLADES; TRANSONIC FLOW; DYNAMIC STRUCTURAL ANALYSIS; FINITE ELEMENT METHOD; HORIZONTAL FLIGHT; UNSTEADY FLOW
Imprint And Other Notes: IN: AIAA Applied Aerodynamics Conference, 7th, Seattle, WA, July 31-Aug. 2, 1989, Technical Papers (A89-47626 21-02). Washington, DC, American Institute of Aeronautics and Astronautics, 1989, p. 440-451.
Availability Source: Other Sources
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