FLUTTER STABILITY OF A DETUNED CASCADE IN SUBSONIC COMPRESSIBLE FLOW

被引:12
作者
SAWYER, S
FLEETER, S
机构
[1] Purdue University, West Lafayette, IN
[2] Purdue University, West Lafayette, IN
关键词
D O I
10.2514/3.23918
中图分类号
V [航空、航天];
学科分类号
08 ; 0825 ;
摘要
A mathematical model is developed to predict the unsteady aerodynamics of a detuned two-dimensional flat plate cascade in subsonic compressible flow. Aerodynamic detuning is introduced by nonuniform circumferential spacing and chordwise offset. Combined aerodynamic-structural detuning is accomplished by replacing alternate airfoils with splitter blades. A torsion mode stability analysis that considers aerodynamic and combined aerodynamic-structural detuning is developed by combining the unsteady aerodynamic model with a single degree-of-freedom structural model. The effect of these detuning techniques on flutter stability is then demonstrated by applying this model to a baseline unstable 12-bladed rotor and detuned variations of this rotor. This study demonstrates that detuning is a viable passive flutter control technique.
引用
收藏
页码:923 / 930
页数:8
相关论文
共 50 条
[41]   Flutter of subsonic wing [J].
Moosavi, MR ;
Oskouei, ARN ;
Khelil, A .
THIN-WALLED STRUCTURES, 2005, 43 (04) :617-627
[42]   SUBSONIC FLAPPING FLUTTER [J].
GROTBERG, JB ;
REISS, EL .
JOURNAL OF SOUND AND VIBRATION, 1984, 92 (03) :349-361
[43]   Nonlinear flutter behavior of a plate with motion constraints in subsonic flow [J].
Peng Li ;
Yiren Yang ;
Li Lu .
Meccanica, 2014, 49 :2797-2815
[44]   Nonlinear flutter behavior of a plate with motion constraints in subsonic flow [J].
Li, Peng ;
Yang, Yiren ;
Lu, Li .
MECCANICA, 2014, 49 (12) :2797-2815
[45]   A SUBSONIC FLUTTER ANOMALY [J].
GROTBERG, JB ;
REISS, EL .
JOURNAL OF SOUND AND VIBRATION, 1982, 80 (03) :444-446
[46]   ANALYSIS OF FLUTTER IN COMPRESSIBLE FLOW OF A PANEL ON MANY SUPPORTS [J].
HEDGEPETH, JM ;
BUDIANSKY, B ;
LEONARD, RW .
JOURNAL OF THE AERONAUTICAL SCIENCES, 1954, 21 (07) :475-486
[47]   PARAMETRIC STUDY OF THE FLUTTER STABILITY OF A SWEPT-BACK HALF-WING WITH ENGINE NACELLE IN SUBSONIC FLOW [J].
FORSCHING, H ;
KEISSLER, C .
ZEITSCHRIFT FUR FLUGWISSENSCHAFTEN UND WELTRAUMFORSCHUNG, 1994, 18 (05) :289-302
[48]   Active Flutter Suppression of a Wing Section in a Compressible Flow [J].
Munoz, Alvaro ;
Garcia-Fogeda, Pablo .
AEROSPACE, 2022, 9 (12)
[49]   UNSTEADY SUPERSONIC CASCADE IN SUBSONIC AXIAL-FLOW [J].
VERDON, JM ;
MCCUNE, JE .
AIAA JOURNAL, 1975, 13 (02) :193-201
[50]   ACTUATOR DISC THEORY FOR COMPRESSIBLE FLOW AND A SUBSONIC CORRECTION FOR PROPELLERS [J].
LAITONE, EV .
JOURNAL OF THE AERONAUTICAL SCIENCES, 1953, 20 (05) :365-366