Abstract
This article presents the fuselage/main rotor coupling dynamics under a modal analysis to study the modes of oscillation. The authors provide a rotorcraft simulation model that captures complex dynamics, wherein the validation is done with existing theories. The model has been set up by using VehicleSim, software specialized in modelling mechanical systems composed by rigid bodies. It is presented a helicopter simulation framework, that allows to study the impact of the main rotor varying angular speed on the system. Moreover, the generated heterodyning behaviour and harmonics can be analysed on the fuselage. The detection of this performance is not a simple task, and this helicopter model provides an accurate system for its study using a short-time Fourier transform processing. The coupled dynamics observed between the fuselage and the main rotor indicate that the model can be a suitable tool to detect this type of performance.
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Author contribution: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: None declared.
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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© 2020 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Original Research Articles
- Numerical analysis of geometrical nonlinear aeroelasticity with CFD/CSD method
- Application of moving least squares algorithm for solving systems of Volterra integral equations
- Recurrence relations for a family of iterations assuming Hölder continuous second order Fréchet derivative
- Stochastic models with multiplicative noise for economic inequality and mobility
- Fast interaction of Cu2+ with S2O3 2− in aqueous solution
- Rotorcraft fuselage/main rotor coupling dynamics modelling and analysis
- Modeling and fault identification of the gear tooth surface wear failure system
- Wavelet-optimized compact finite difference method for convection–diffusion equations
- A methodology for dynamic behavior analysis of the slider-crank mechanism considering clearance joint
- Dynamics of a stochastic susceptible-infective-recovered (SIRS) epidemic model with vaccination and nonlinear incidence under regime switching and Lévy jumps
- The twin properties of rogue waves and homoclinic solutions for some nonlinear wave equations
- Distributed consensus of multi-agent systems with increased convergence rate
- Studies on population balance equation involving aggregation and growth terms via symmetries
- Bifurcation, routes to chaos, and synchronized chaos of electromagnetic valve train in camless engines
- Feedback control of a nonlinear aeroelastic system with non-semi-simple eigenvalues at the critical point of Hopf bifurcation
- Nonlinear dynamics of a RLC series circuit modeled by a generalized Van der Pol oscillator
Artikel in diesem Heft
- Frontmatter
- Original Research Articles
- Numerical analysis of geometrical nonlinear aeroelasticity with CFD/CSD method
- Application of moving least squares algorithm for solving systems of Volterra integral equations
- Recurrence relations for a family of iterations assuming Hölder continuous second order Fréchet derivative
- Stochastic models with multiplicative noise for economic inequality and mobility
- Fast interaction of Cu2+ with S2O3 2− in aqueous solution
- Rotorcraft fuselage/main rotor coupling dynamics modelling and analysis
- Modeling and fault identification of the gear tooth surface wear failure system
- Wavelet-optimized compact finite difference method for convection–diffusion equations
- A methodology for dynamic behavior analysis of the slider-crank mechanism considering clearance joint
- Dynamics of a stochastic susceptible-infective-recovered (SIRS) epidemic model with vaccination and nonlinear incidence under regime switching and Lévy jumps
- The twin properties of rogue waves and homoclinic solutions for some nonlinear wave equations
- Distributed consensus of multi-agent systems with increased convergence rate
- Studies on population balance equation involving aggregation and growth terms via symmetries
- Bifurcation, routes to chaos, and synchronized chaos of electromagnetic valve train in camless engines
- Feedback control of a nonlinear aeroelastic system with non-semi-simple eigenvalues at the critical point of Hopf bifurcation
- Nonlinear dynamics of a RLC series circuit modeled by a generalized Van der Pol oscillator