Active tiltrotor whirl-flutter stability augmentation using wing-flaperon and swash-plate actuation

Journal of Aircraft

Volumn 44, Issue 5, 2007, Pages 1439-1446

  Paik, Jinho ^a,c   Singh, Rupinder ^a,c   Gandhi, Farhan ^a,c,d   Hathaway, Eric ^b,e  

^a PENNSYLVANIA STATE UNIVERSITY   (United States)

^b BOEING COMPANY   (United States)

^c Aerospace Engineering Department   (United States)

^d AIAA   (United States)

^e Flying Qualities Department

Author keywords

[No Author keywords available]

Indexed keywords

FEEDBACK CONTROL; OPTIMAL CONTROL SYSTEMS; WINGS;

CRUISE MODE; FULL-STATE FEEDBACK CONTROLLERS; WING STATES;

ROTORS;

EID: 36348939316     PISSN: 00218669     EISSN: 15333868     Source Type: Journal    
DOI: 10.2514/1.20234     Document Type: Article

References (17)

1. Howard, A. K. T., "The Aeromechanical Stability of Soft-Inplane Tiltrotors," Ph.D. Thesis, Pennsylvania State University, University Park, PA, 2001.
2. Magee, J. P., and Alexander, H. R., "Wind Tunnel Tests of a Full Scale Hingeless Prop/Rotor Designed for the Boeing Model 222 Tilt Rotor Aircraft," NASA CR 114664, Boeing Vertol Co., Oct. 1973.
3. Nixon, M. W., Langsten, C. W., Singleton, J. D., Piatak, D. J., Kvaternik, R. G., Corso, L. M., and Brown, R. K., "Aeroelastic Stability of a Four-Bladed Semi-Articulated Soft-Inplane Tiltrotor Model," Proceedings of the 59th Annual AHS Forum, The American Helicopter Society, Alexandria, VA, 6-8 May 2003.
4. Johnson, W., "Optimal Control Alleviation of Tilting Proprotor Gust Response," Journal of Aircraft, Vol. 14, No. 3, March 1977, pp. 301-308.
5. Nasu, K.-i., "Tilt-Rotor Flutter Control in Cruise Right," NASA TM 88315, Dec. 1986.
6. van Aken, J. M., "Alleviation of Whirl-Flutter on Tilt-Rotor Aircraft Using Active Controls," Proceedings of the 47th Annual AHS Forum, The American Helicopter Society, Alexandria, VA, 6-8 May 1991.
7. van Aken, J. M., "Alleviation of Whirl-Flutter on a Joined-Wing TiltRotor Aircraft Configuration Using Active Controls," International Specialists ' Meeting on Rotorcraft Basic Research of the American Helicopter Society, The American Helicopter Society, Alexandria, VA, 25-27 March 1991.
8. Vorwald, J. G., and Chopra, I., "Stabilizing Pylon Whirl Flutter on a Tilt-Rotor Aircraft," Proceedings of the 32nd AIAA/ASMF/ASCE/AHS/ ASC Structures, Structural Dynamics, and Materials Conference, AIAA, Washington, D.C., 8-10 April 1991.
9. Kvaternik, R. G., Piatak, D. J., Nixon, M. W., Langsten, C. W., Singleton, J. D., Bennett, R. L., and Brown, R. K., "An Experimental Evaluation of Generalized Predictive Control for Tiltrotor Aeroelastic Stability Augmentation in Airplane Mode of Flight," Proceedings of the 57th Annual AHS Forum, The American Helicopter Society, Alexandria, VA, 9-11 May 2001.
10. Nixon, M. W., Langsten, C. W., Singleton, J. D., Piatak, D. J., Kvaternik, R. G., Corso, L. M., and Brown, R., "Aeroelastic Stability Of A Soft-Inplane Gimballed Tiltrotor Model In Hover," Proceedings of the 42nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, AIAA, Reston, VA, 16-19 April 2001.
11. Nixon, M. W., Langsten, C. W., Singleton, J. D., Piatak, D. J., Kvaternik, R. G., Corso, L. M., and Brown, R. K., "Technical Note: Hover Test of a Soft-Inplane Gimballed Tiltrotor Model," Journal of the American Helicopter Society, Vol. 48, No. 1, Jan. 2003, pp. 63-66.
12. Kvaternik, R. G., "Exploratory Studies in Generalized Predictive Control for Active Aeroelastic Control of Tiltrotor Aircraft," NASA TM-2000-210552, 2000.
13. Hathaway, E., and Gandhi, F., "Tiltrotor Whirl Flutter Alleviation Using Actively Controlled Wing Flaperons," AIAA Journal, Vol. 44, No. 11, Nov. 2006, pp. 2524-2534.
14. Nixon, M. W., Kvaternik, R. G., and Settle, T. B., "Tiltrotor Vibration Reduction Through Higher Harmonic Control," Proceedings of the 53rd Annual AHS Forum, The American Helicopter Society, Alexandria, VA, 29 April-1 May 1997.
15. Hathaway, E. L., and Gandhi, F., "Modeling Refinements in Simple Tiltrotor Whirl Flutter Analyses," Journal of the American Helicopter Society, Vol. 48, No. 3, July 2003, pp. 186-198.
16. Hathaway, E., and Gandhi, F., "Design Optimization for Improved Tiltrotor Whirl Flutter Stability," Journal of the American Helicopter Society, Vol. 52, No. 2, April 2007, pp. 79-89.
17. Hathaway, E., "Active and Passive Techniques for Tiltrotor Aeroelastic Stability Augmentation," Doctoral Thesis in Aerospace Engineering, Pennsylvania State University, University Park, PA, Aug. 2005.