... . 24 09 2010 29 10 2010 23 06 2011 23 06 2011 blades elasticity failure (mechanical) fans jet engines stators Advanced design composite fan stators at Honeywell have encountered high amplitude vibrations during development. Sanders ( 1 ) reported the destructive...

... occurs when both stall and acoustic flutters happen at the same speed. It is also found that blade stiffening has no effect on aero-acoustic flutter. 19 08 2009 28 10 2009 27 04 2011 27 04 2011 aerodynamics blades compressible flow elasticity fans turbomachinery...

...Jean Thomassin; Huu Duc Vo; Njuki W. Mureithi Nonsynchronous vibration (NSV) is a particular type of aero-elastic phenomenon, where the rotor blades vibrate at nonintegral multiples of the shaft rotational frequencies. NSV behavior appears similar to off-design stall flutter but with a particular...

...L. He; D. X. Wang Increasing aerothermal and aero-elastic performance requirements and constraints are closely linked in modern blading designs. There is thus a need for more concurrent interaction between the disciplines at earlier stages of a design process. Presented in this paper...

... elasticity jet engines vehicle dynamics In many aeropropulsion applications, a relatively low fidelity engine model (i.e., without volume dynamics), which includes speed and temperature dynamics with the appropriate component performance characteristics, is adequate to design control laws...

.... 28 08 2008 15 10 2008 17 09 2009 aerospace propulsion blades elasticity rockets rotors turbines Turbomachinery for liquid rocket propulsion shares many of the design features and challenges found in gas turbines. The emphasis is on delivering very high power in a small...

.... 01 08 2007 05 12 2007 29 01 2009 aerodynamics blades damping elasticity mechanical stability rings (structures) springs (mechanical) stators structural engineering turbines vibrations Corral , R. , Gallardo , J. , and Vasco , C. , 2007...

.... This phenomenon, causing discontinuities in the frequency versus jet velocity characteristic, is known as staging of the impinging shear layer. 13 06 2007 24 08 2007 28 10 2008 aerospace engines blades compressors elasticity jets rotors shafts vibrations Nonsynchronous...

.... The difference in Reynolds numbers or wetness exerts second order effects and are not considered large enough to invalidate this linear evaluation. 08 06 2007 19 07 2007 17 10 2008 aerodynamics computational fluid dynamics damping elastic constants elasticity machinery production...

... and ( b ) blade-by-blade damping breakdown, − 4 ND mode, lightly damped, ABM Rotor X 20 06 2007 19 07 2007 17 10 2008 aerodynamics blades computational fluid dynamics discs (structures) elasticity flexible structures rotors vibrations The object of any...

... into the low pressure compression domain but also the expected hysteresis pattern of the surge loop in terms of its mass flow versus pressure characteristic. 20 02 2007 22 02 2007 06 05 2008 compressible flow compressors elasticity flow instability flow visualisation machine testing...

... correlation between the running and static patterns is demonstrated. 25 05 2006 06 06 2006 gas turbines fans blades aerodynamics engines elasticity stagger variability stagger pattern untwist As an assembly of high aspect ratio, thin, flexible aerofoils rotates...

.... Benvenuti. 03 June 2002 01 December 2001 01 March 2002 15 06 2004 elasticity Navier-Stokes equations computational fluid dynamics integral equations transonic flow subsonic flow turbines In modern turbomachinery design and development, it is crucial to predict...

... elasticity torsion Stall flutter has been one of the most difficult aeroelastic problems to predict in turbomachinery, with two distinct stall-side flutter regimes possible. Subsonic/transonic stall flutter occurs at part-speed operating conditions where the incidence angles are high and the inlet...

... decades is depicted in Fig. 1 . elasticity welding blades discs (structures) turbines Navier-Stokes equations damping aerodynamics mechanical stability rotors 01 10 2003 01 03 2004 2007 American Society of Mechanical Engineers ...

.... 08 May 2000 01 February 2000 flow separation gas turbines aerodynamics oscillations pressure measurement test facilities design of experiments elasticity flow instability The development of modern steam turbine generators is strongly influenced by the capabilities...

... 8–11, 2000. Manuscript received by the International Gas Turbine Institute February 2000. Paper No. 2000-GT-381. Review Chair: D. Ballal. 08 May 2000 01 February 2000 aircraft compressors vibrations frequency-domain analysis aerodynamics elasticity flow separation time...

... February 1998. Paper No. 98-GT-571. Associate Technical Editor: R. E. Kielb. 02 June 1998 01 February 1998 gas turbines aerodynamics elasticity flow simulation oscillations pressure bending A significant effort has been made in recent years to develop computational...