A Study on Torsional Vibration Suppression Method for an Integrated Helicopter / Engine System
-
Yong Wang
und
Mingyang Chen
Abstract
In order to solve the problem of torsional vibration instability of control unit in helicopter/engine system during maneuver flight, this paper has conducted the research on the integrated torsional vibration suppression of helicopter/engine system. Firstly, an integrated helicopter/engine model combined with torsional vibration is established based on the UH-60 helicopter model. Then the torsional vibration filter that is composed of a notch filter and a low-pass filter is applied to speed control loop of the engine to suppress the torsional vibration of power turbine speed. It is shown that the integrated helicopter/engine model combined with torsional vibration can simulate the torsional vibration characteristics under variable rotor speed, and both the low-order and high-order amplitudes of torsional vibration can be effectively eliminated below 0.04 % at constant rotor speed through utilizing the torsional vibration filter. Meanwhile, when the helicopter operates under variable rotor speed, the fundamental frequency of torsional vibration varies from 1.30 Hz to 2.30 Hz. However, all torsional vibration amplitudes within this frequency range can be damped less than 0.05 % through the notch filter whose bandwidth is 2.3 Hz, which proves the remarkable effect of torsional vibration suppression.
Funding statement: The work has been co-supported by the National Natural Science Foundation of China (Grant/Award Number: 51576096), Qing Lan, 333 Project and Research Funds for Central Universities (No. NF2018003).
Nomenclature
- Symbol
-
Explanation
- Wfb
-
Fuel flow (kg/s).
- JP
-
Equivalent rotating inertia of power turbine.
- CP
-
Equivalent damping of power turbine.
- JMR
-
Equivalent rotating inertia of rotor.
- CMR
-
Equivalent damping of rotor.
- Np
-
Relative speed power turbine (%).
- Mp
-
Turbo-shaft engine torque.
- Ωp
-
Torsional speed of power turbine.
- K0
-
Equivalent stiffness of transmission shaft.
- Kc
-
Rotor blade centrifugal stiffness.
- KMR
-
Mask shaft stiffness.
- MB
-
Mass of blade
- Wn
-
Natural frequency of torsional.
- Vzzl
-
Helicopter climb speed (m/s).
- Ng
-
Relative speed of Gas turbine (%).
- N
-
Gear ratio of engine speed:rotor speed
- l
-
Distance from blade hinge to blade tip
- e
-
Distance from rotor center to blade hinge
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© 2018 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Editorial
- Study on Global Aerodynamic Shape Optimization of Transonic Compressor Blade
- Original Research Articles
- The Migration of Corner Separation Flow in Multi-Channel Compressor Cascades at High Attack Angle
- Water Film Formation and Performance Effect on Compressor Stage in Water Injection Process
- A Novel Reliability Analysis Method for Turbine Discs with the Mixture of Fuzzy and Probability-Box Variables
- Numerical Study of Unsteady Pulsed Suction through Endwall Bleed Holes in a Highly Loaded Compressor Cascade
- A Study on Torsional Vibration Suppression Method for an Integrated Helicopter / Engine System
- Numerical Simulation of Supersonic Jet Control by Tabs with Slanted Perforation
- Effect of Gurney Flaps on the Aerodynamic Characteristics of NACA 0010 Cascades
- A Study on Nonlinear Model Predictive Control for Helicopter/Engine with Variable Rotor Speed Based on Linear Kalman Filter
- Performance Characteristic Modeling for 2D Compressor Cascades
- Numerical Investigation on Metrological Fidelity of a Shielded Thermocouple Probe and the Effects of Geometrical Parameters
- Experimental Study of Kerosene Ignition and Flame Stabilization in a Supersonic Combustor
- Metaheuristics Optimized Machine Learning Modelling of Environmental Exergo-Emissions for an Aero-Engine
- Nonlinear Model Predictive Control Strategy for Limit Management of Aero-Engines
- Numerical Investigation on the Cold Flow Field of a Typical Cavity-based Scramjet Combustor with Double Ramp Entry
Artikel in diesem Heft
- Frontmatter
- Editorial
- Study on Global Aerodynamic Shape Optimization of Transonic Compressor Blade
- Original Research Articles
- The Migration of Corner Separation Flow in Multi-Channel Compressor Cascades at High Attack Angle
- Water Film Formation and Performance Effect on Compressor Stage in Water Injection Process
- A Novel Reliability Analysis Method for Turbine Discs with the Mixture of Fuzzy and Probability-Box Variables
- Numerical Study of Unsteady Pulsed Suction through Endwall Bleed Holes in a Highly Loaded Compressor Cascade
- A Study on Torsional Vibration Suppression Method for an Integrated Helicopter / Engine System
- Numerical Simulation of Supersonic Jet Control by Tabs with Slanted Perforation
- Effect of Gurney Flaps on the Aerodynamic Characteristics of NACA 0010 Cascades
- A Study on Nonlinear Model Predictive Control for Helicopter/Engine with Variable Rotor Speed Based on Linear Kalman Filter
- Performance Characteristic Modeling for 2D Compressor Cascades
- Numerical Investigation on Metrological Fidelity of a Shielded Thermocouple Probe and the Effects of Geometrical Parameters
- Experimental Study of Kerosene Ignition and Flame Stabilization in a Supersonic Combustor
- Metaheuristics Optimized Machine Learning Modelling of Environmental Exergo-Emissions for an Aero-Engine
- Nonlinear Model Predictive Control Strategy for Limit Management of Aero-Engines
- Numerical Investigation on the Cold Flow Field of a Typical Cavity-based Scramjet Combustor with Double Ramp Entry
