Vibration Reduction Devices for Korean Utility Helicopter
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TLDR
In this paper, the vibration reduction devices were applied to main rotor blades, main gear box(MGB) supporting structure, cockpit, cabin and pilot seats to reduce rotor-induced 4/rev vibration.Abstract:
Korean Utility Helicopter(KUH) is the first korean-developed helicopter. Its first flight was performed in March 2010 and then its development was completed successfully by June 2012. During flight test phase, KUH faced various vibration problems and appropriate vibration-reduction devices were designed and applied to solve the problems. The vibration-reduction devices were applied to main rotor blades, main gear box(MGB) supporting structure, cockpit, cabin and pilot seats to reduce rotor-induced 4/rev vibration. Also, dome-fairing was introduced in order to reduce the tail-shake vibration. This paper shows design technique and flight test results for vibration-reduction devices that have been incorporated into KUH.read more
Citations
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Journal ArticleDOI
Test and Simulation of an Active Vibration Control System for Helicopter Applications
TL;DR: In this paper, a test bench for light civil helicopter (LCH) applications is constructed and vibration control tests and simulations are performed in this study, which represents the airframe, using a pair of counter rotating force generators (CRFGs) and a multiple input single output (MISO) active vibration control system.
Journal ArticleDOI
Demonstration of Active Vibration Control System on a Korean Utility Helicopter
TL;DR: Flight tests showed that the vibration levels with AVCS at the cockpit area and the cabin area were reduced more than that of the tuned vibration absorber (TVA), and it was possible to configure AVCS with lower weight than the TVA.
Journal ArticleDOI
Application and Performance Evaluation of Helicopter Active Vibration Control System for Surion
TL;DR: In this article, a technology demonstration program was performed in order to validate the performance of AVCS when applied to Surion, and optimization process for finding optimal configuration of sensors and actuators.
Journal ArticleDOI
헬리콥터 능동진동제어시스템 가속도 신호 처리;헬리콥터 능동진동제어시스템 가속도 신호 처리;Accelerometer Signal Processing for a Helicopter Active Vibration Control System
TL;DR: In this paper, a signal processing algorithm extracting cosine and sine components of the error signals are modeled using Simulink and PIL (processor-in-the-loop) mode simulation was executed for real-time performance evaluation.
Journal ArticleDOI
A Case Study of Vibration Reduction of Helicopter Development Configuration Using Graphic Analysis and Desirability Function
TL;DR: Byun et al. as mentioned in this paper presented graphic methods and desirability function approach to determine best vibration reducing configuration for Surion helicopter, and nine vibration levels in cockpit, cabin and engine room were measured in each test and analyzed to find optimal configuration.
References
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Recent advances in Eurocopter's passive and active vibration control
Peter Konstanzer,Bernhard Enenkl,Eurocopter Deutschland,Pierre-Antoine Aubourg,Paul Cranga,Eurocopter Sas +5 more
TL;DR: In this article, a short review of the rotor-induced vibration problem is given with a link to typical vibration characteristics of Eurocopter helicopters, and the concepts and means to influence and control vibrations are outlined.
Journal ArticleDOI
한국형 기동헬기 전기체 지상진동시험
TL;DR: In this article, the ground vibration test (GVT) was performed on a Korean Utility Helicopter (KUH) to identify the dynamic characteristics of the main rotor and the airframe.