• Title/Summary/Keyword: 병진속도명령

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Helicopter Attitude Command Response Type Control System Design using SAS Actuators and Trim Actuators (안정성증강 작동기와 트림 작동기를 이용한 헬리콥터 자세명령반응타입 제어시스템 설계)

  • Kim, Eung Tai;Choi, Inho;Hyun, JeongWook
    • Journal of the Korean Society for Aviation and Aeronautics
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    • v.21 no.4
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    • pp.34-40
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    • 2013
  • Attitude command response type required for enhanced handling qualities of helicopter can be implemented by mechanical automatic flight control system with SAS actuators which have limited authorities. However, the early saturation of SAS actuator hinders the helicopter from following the attitude command for large stick command. Auto-trim controller can delay SAS actuator's saturation by utilizing trim actuators and allows the attitude command response type for larger stick command. This paper describes the control law for limited authority system of helicopter with auto-trim. Limited authority system is applied to BO-105 linear dynamic model and simulation is performed along with handling quality analysis.

Design of DubaiSAT-1 S-band Receiver RF block (DubaiSAT-1 위성용 S-band 수신기의 RF 블록 설계)

  • Park, In-Yong;Min, Seung-Hyun;Kim, Byung-Jin
    • Journal of the Korean Society for Aeronautical & Space Sciences
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    • v.39 no.2
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    • pp.178-182
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    • 2011
  • A FSK receiver RF block has been developed for Dubaisat-1 Low Earth Orbit satellite. The receiver has Doppler tracking function which compensate frequency shift on uplink channel for commanding the satellite. It consist of LNA, downconverter and IF module. The IF module has Doppler tracking circuitry which sweep and lock on to input signal. It satisfies the requirement of the Dubaisat-1 in mass, power consumption, tracking speed and BER performance.