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Analyzing Aeroelasticity in TurbomachinesASTROP2-LE is a computer program that predicts flutter and forced responses of blades, vanes, and other components of such turbomachines as fans, compressors, and turbines. ASTROP2-LE is based on the ASTROP2 program, developed previously for analysis of stability of turbomachinery components. In developing ASTROP2- LE, ASTROP2 was modified to include a capability for modeling forced responses. The program was also modified to add a capability for analysis of aeroelasticity with mistuning and unsteady aerodynamic solutions from another program, LINFLX2D, that solves the linearized Euler equations of unsteady two-dimensional flow. Using LINFLX2D to calculate unsteady aerodynamic loads, it is possible to analyze effects of transonic flow on flutter and forced response. ASTROP2-LE can be used to analyze subsonic, transonic, and supersonic aerodynamics and structural mistuning for rotors with blades of differing structural properties. It calculates the aerodynamic damping of a blade system operating in airflow so that stability can be assessed. The code also predicts the magnitudes and frequencies of the unsteady aerodynamic forces on the airfoils of a blade row from incoming wakes. This information can be used in high-cycle fatigue analysis to predict the fatigue lives of the blades.
Document ID
20110024013
Acquisition Source
Glenn Research Center
Document Type
Other - NASA Tech Brief
Authors
Reddy, T. S. R.
(Toledo Univ. Toledo, OH, United States)
Srivastava, R.
(Toledo Univ. Toledo, OH, United States)
Date Acquired
August 25, 2013
Publication Date
December 1, 2003
Publication Information
Publication: NASA Tech Briefs, December 2003
Subject Category
Man/System Technology And Life Support
Report/Patent Number
LEW-17477
Distribution Limits
Public
Copyright
Public Use Permitted.
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