The paper shows the results of the experimental activity about the dynamics of a stage of a counter-rotating turbine of an open rotor architecture engine. The tests presented here explore the dynamic behavior of a simplified counter-rotating turbine stage. The test results show the dynamic behavior of a counter-rotating turbine stage and highlight the importance of the presence of dry friction for vibration damping.

References

2.
Schimming
,
P.
,
2003
, “
Counter Rotating Fans—An Aircraft Propulsion for the Future?
,”
J. Thermal Sci.
,
112
(
2
), pp.
97
103
.10.1007/s11630-003-0049-1
3.
Page
,
L.
,
2009
, “
NASA Working on ‘Open Rotor’ Green (but Loud) Jets: Want to Save the Planet? Put Up With Noisier Airports
,” The Register, June 12, 2009, http://www.theregister.co.uk/2009/06/12/nasa_open_rotor_trials/
4.
NASA
,
1987
, “
Full Scale Technology Demonstration of a Modern Counter rotating Unducted Fan Engine Concept—Design Report
,” NASA report CR-180867.
5.
NASA
,
1987
, “
Full Scale Technology Demonstration of a Modern Counter rotating Unducted Fan Engine Concept—Engine Test
,” NASA report CR-180867.
6.
Ewins
,
D. J.
,
2010
, “
Control of Vibration and Resonance in Aero Engines and Rotating Machinery—An Overview
,”
Int. J. Pressure Vessels Piping
,
87
, pp.
504
510
.10.1016/j.ijpvp.2010.07.001
7.
Castanier
,
M. P.
, and
Pierre
,
C.
,
2006
, “
Modeling and Analysis of Mistuned Bladed Disk Vibration: Status and Emerging Directions
,”
J. Propul. Power
,
22
(
2
), pp.
384
396
.10.2514/1.16345
8.
Cha
,
D.
, and
Sinha
,
A.
,
2011
, “
Computation of the Optimal Normal Load for a Mistuned and Frictionally Damped Bladed Disk Assembly Under Different Types of Excitation
,”
J. Comput. Nonlinear Dyn.
,
6
, pp.
1
10
.10.1115/1.4002515
9.
Zucca
,
S.
,
Filippi
,
S
,
Droetti
,
F
, and
Gola
,
M. M
,
2006
, “
Forced Response of Interlocked Vane Segments: Numerical Prediction and Experimental Results
,”
ASME 8th Biennial Conference on Engineering Systems Design and Analysis (ESDA2006)
2006,
Torino, Italy
,
July 4–7
, Vol.
3
, pp.
413
420
10.1115/ESDA2006-95551.
10.
DREAM Milestone 3.3.1A PDR Turbine Layout, AVIO.
11.
DREAM Milestone 3.3.6A CDR Blades damping design, June 25, 2010, POLITO.
12.
Pierre
,
C.
,
Judge
,
J.
,
Ceccio
,
S. L.
, and
Castanier
,
M. P.
,
2002
, “
Experimental Investigation of the Effects of Random and Intentional Mistuning on the Vibration of Bladed Disks
,”
Proceedings of the 7th National High Cycle Fatigue Conference
,
Palm Beach Gardens, FL, May 14–17
.
13.
Firrone
,
C. M.
,
Berruti
,
T.
,
2012
, “
Non Contact Measurement System With Electromagnets for Vibration Tests on Bladed Disks
,” Applied Measurement Systems, M. Z. Haq, ed., InTech, Rijeka, Croatia, pp.
77
108
, available at: http://www.intechopen.com/books/applied-measurement-systems/non-contact-measurement-system-with-electromagnets-for-vibration-tests-on-bladed-disks
You do not currently have access to this content.