Aeromechanical stability augmentation of helicopters using Enhanced Active Constrained Layer (EACL) treatment on flex beams

Proceedings of SPIE - The International Society for Optical Engineering

Volumn 3327, Issue , 1998, Pages 73-84

  Badre Alam, A ^a   Wang, K W ^a   Gandhi, F ^a  

^a PENNSYLVANIA STATE UNIVERSITY   (United States)

Author keywords

Active passive hybrid control; Adaptive flex beam; Enhanced active constrained layer damping; Rotor stability augmentation

Indexed keywords

ACTUATORS; BEAMS AND GIRDERS; ELECTRIC FIELD EFFECTS; FINITE ELEMENT METHOD; HELICOPTER ROTORS; MATHEMATICAL MODELS; STIFFNESS;

ENHANCED ACTIVE CONSTRAINED LAYERS (EACL);

DAMPING;

EID: 0032403554     PISSN: 0277786X     EISSN: None     Source Type: Conference Proceeding    
DOI: 10.1117/12.310714     Document Type: Conference Paper

References (25)

1. Perspectives in aeromechanical stability of helicopter rotors
2. The challenge of the damperless rotor
3. Concepts for damperless aeromechanically stable rotors
4. An experimental investigation of the effects of aeroelastic couplings on aeromechnaical stability of a hingeless rotor helicopter
5. Rotorcraft air resonance in forward flight with various dynamic inflow models and aeroelastic couplings
6. Optimized aeroelastic couplings for alleviation of helicopter ground resonance
7. Optimal control of helicopter aeromechanical stability
8. Helicopter air resonance modeling and suppression using active control
9. Fuselage state feedback for aeromechanical stability augmentation of a bearingless rotor
10. Active aeromechanical stability augmentation using fuselage state feedback
11. Modeling of an actice constrained layer damper
12. Active constrained layer viscoelastic damping
13. Peformance characteristics of active constrained layer damping
14. Stability and controllability of euler-bernoulli beams with intelligent constrained layer treatments
15. Finite element model for active constrained-layer damping
16. Use of active constrained layer damping for controlling resonant vibration
17. Modeling active constrained layer damping using Golla-Hughes-McTavish approach
18. On the active-passive hybrid control actions of active constrained leyers
19. Some design considerations for active and passive constrained layer damping treatments
20. A finite element for beams having segmented active constrained layers with frequency-dependent viscoelastic
21. A comprasion of active, passive and hybrid damping in structural design
22. A new active constrained layer configuration with enhanced boundary actions
23. Characteristics of enhanced active constrained layer damping treatments with edge elements, Part I: Finite element model development and validation
24. Dynamics of viscoelastic structures - A time domain, finite element formulation
25. Modeling of linear viscoelastic space structures