• 제목/요약/키워드: Flight Modes

검색결과 116건 처리시간 0.031초

스마트 무인기 비행제어 상태/모드 분석 (States and Modes Analysis for Flight Control of Smart UAV)

  • 오수훈
    • 시스템엔지니어링학술지
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    • 제1권2호
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    • pp.43-48
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    • 2005
  • This paper describes the results of applying States and Modes Analysis, one of the requirements analysis techniques, to the development requirements of flight control software for Smart UAV. State/mode table enabled us to investigate various operation and design concepts, and as a result essential requirements for flight control software were established without omitting necessary requirements. Through the use of scenario-specific state transition diagrams, dynamic behaviours and control/response interfaces between each state and mode could been clearly identified, which made it possible to establish requirements related to dynamic behaviours of states and modes which are essential to the design of flight control software.

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군용항공기의 운항 경로 변경에 따른 소음영향 및 저감 평가 (Evaluation on the Noise Influence and Reduction due to the Change of Military Aircraft Flight Path)

  • 이진영;이찬;길현권
    • 환경영향평가
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    • 제18권3호
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    • pp.143-150
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    • 2009
  • The present study investigates the effects of the flight paths of military aircraft on noise map and its WECPNL(Weighted Equivalent Continuous Perceived Noise Level) distribution. Aircraft noise modeling and simulation have been performed on a Korean military air base by means of INM(Integrated Noise Model) with the input data of airfield location, aircraft specifications, flight paths and aircraft's operation schedules. The result of noise modelling has been verified in comparison with the result of measured noise level. The flight path of military aircraft, as the key parameter of the present study, was modeled by combining takeoff, overfly, approach and touch-and-go modes. The present INM simulations have been conducted for various flight path cases with different takeoff, approach modes and overfly modes. The simulation results showed that the change of flight path can remarkably affect the noise influence region and the WECPNL distribution around the airfield.

Stateflow를 이용한 소형제트기 Flight Director의 비행모드 구현 (Realization of Flight Modes for Light General Aviation Flight Director using Stateflow)

  • 이장호;김성필;성기정;김웅태
    • 항공우주시스템공학회지
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    • 제1권2호
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    • pp.6-12
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    • 2007
  • Flight modes of automatic flight control system for light general aviation flight deck. Garmin G1000, were realized using Stateflow. In developing aircraft, it is difficult to verify the operational flight program in particular branch statement because developer can not see any visual logical steam. So, Stateflow has been used to visualize logical stream, transition from one flight mode to another flight mode. The performance was approved by applying flight mode transition conditions of G1000 to proposed transition system that is composed of states, switches, events, data and transition conditions. DURMI-II was used as 6-DOF simulation model.

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원격조종항공기 드론 조종기모드 표준화 연구 : 드론 조종기모드 선호도를 중심으로 (A Study on Standardization on the Flight Controller Mode in Remotely Piloted Aircraft Drone : Focused on Drone Controller Mode Preference)

  • 박원태
    • 산업경영시스템학회지
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    • 제42권4호
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    • pp.69-75
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    • 2019
  • Remotely Piloted Aircraft (RPA) controls as a type of unmanned aerial vehicle (drone) is growing rapidly and its flight controller stick disposition is required standardization. We should standardize RPA drone flight control disposition because the flight pilot of RPA is hard to be trained so the flight controller stick differences impairs safety and wastes time and effort of flight controller industry. So this study researches the on-going standardization of RPA drone flight control disposition in Korea and foreign countries. Also this paper analyzes and researches of expert about RPA drone flight controller function and application of flight control mode. I accomplished expert research about standardization plan of unmanned flight control mode and confirm the necessity. Nowadays mode1 and 2 are mostly used in Korea so I carried out preference investigation for two modes. There were 4 preferences choices of RPA drone control mode necessity (importance) and recommendation of standardization modes. They answered that necessity of standardization is important considering pilot training, flight safety and positive development of drone industry. The result of standardization mode preference is that they prefer mode 2 (drone maker 86%, training facilities and research facilities 58%, government bureau 60%). Overall preference result shows that mode 1 24%, mode 1&2 16%, mode 2 60%. So they preferred mode 2 by 60%. The differences between two modes are the direction of throttle and pitch. Direction of throttle and pitch operate opposite way. They prefer mode 2 because mode 2 has similarities of manned flight control mode. Significance of this study is that it showed the necessity of standardization and flight control preference in a quantitative way. It will help drone standardization in related industries and development direction near future.

비행 모드에 따른 CRW UAV 추진시스템의 정상상태 운전특성 해석 (Steady State Operational Characteristic Analysis of the Propulsion System for the Canard Rotor Wing UAV in three different Flight Modes)

  • 공창덕;강명철;기자영;박종하;양수석;전용민
    • 한국추진공학회:학술대회논문집
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    • 한국추진공학회 2003년도 제21회 추계학술대회 논문집
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    • pp.215-218
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    • 2003
  • 본 연구에서는 회전익 상태에서 이/착륙, 저속 전진비행을 하고, 고정익 상태에서 고속 전진비행을 하는 스마트 무인기 추진시스템을 모델링하고 회전익 모드, 고정익 상태의 고속 비행모드, 팁 제트 노즐과 주 엔진 노즐을 모두 이용하는 혼합모드에 대해 정상상태 성능해석을 수행하였다.

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군용항공기의 이.착륙 패턴에 따른 소음 영향 분석 (Analysis of the Noise Effects due to the Variation of Military Aircraft Flight Patterns of Takeoff and Approach)

  • 이진영;이찬;길현권
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2008년도 춘계학술대회논문집
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    • pp.626-629
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    • 2008
  • The present study investigates the effect of the flight patterns of military aircraft for takeoff and approach on noise map. Aircraft noise modeling and simulation have been made on a Korean military airport by INM(Integrated Noise Model). The flight path of a military aircraft is modeled with takeoff, overfly, approach and touch-and-go modes. The present INM simulations are conducted for various cases with change of different takeoff and approach modes. It show that the change of takeoff and approach modes can cause considerable noise effects on the noise influence region around the airport.

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Development of Flight Control System and Troubleshooting on Flight Test of a Tilt-Rotor Unmanned Aerial Vehicle

  • Kang, Youngshin;Park, Bum-Jin;Cho, Am;Yoo, Chang-Sun;Koo, Sam-Ok;Tahk, Min-Jea
    • International Journal of Aeronautical and Space Sciences
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    • 제17권1호
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    • pp.120-131
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    • 2016
  • The full results of troubleshooting process related to the flight control system of a tilt-rotor type UAV in the flight tests are described. Flight tests were conducted in helicopter, conversion, and airplane modes. The vehicle was flown using automatic functions, which include speed-hold, altitude-hold, heading-hold, guidance modes, as well as automatic take-off and landing. Many unexpected problems occurred during the envelope expansion tests which were mostly under those automatic functions. The anomalies in helicopter mode include vortex ring state (VRS), long delay in the automatic take-off, and the initial overshoot in the automatic landing. In contrast, the anomalies in conversion mode are untrimmed AOS oscillation and the calibration errors of the air data sensors. The problems of low damping in rotor speed and roll rate responses are found in airplane mode. Once all of the known problems had been solved, the vehicle in airplane mode gradually reached the maximum design speed of 440km/h at the operation altitude of 3km. This paper also presents a comprehensive detailing of the control systems of the tilt-rotor unmanned air vehicle (UAV).

항적자료를 이용한 공항소음 피해 예측 (Prediction of Airport noise Based on Flight path data)

  • 민지훈;김정태;손정곤
    • 소음진동
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    • 제10권5호
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    • pp.792-799
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    • 2000
  • Aircraft noise in the vicinity of Kimpo international airport has damaged to large number of people who live in communities. This paper investigates noise exposed area due to aircraft flight based on prediction modeling program INM and flight path data. Especially effect on route for aircraft has been considered. Ti also examines noise impact for various flight modes, such as a thrust cutback climb method.

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군용항공기의 운항 경로에 따른 WECPNL 변화에 관한 연구 (Study on the WECPNL Variation due to the Change of Military Aircraft Flight Path)

  • 이진영;이찬;길현권;황성국
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2007년도 추계학술대회논문집
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    • pp.793-795
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    • 2007
  • The present study investigates the effect of the flight path of military aircraft on noise map and its WECPNL distribution. Aircraft noise modeling and simulation are made on a Korean military airport by INM(Integrated Noise Model) 6.2 version, and the flight path of military aircraft is modeled by combining takeoff, overfly, approach and touch-and-go modes. The present INM simulations are conducted for two cases with different overfly modes and show that the change of overfly mode remarkably affects the noise influence region and the WECPNL distribution around the aircraft.

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KSLV-I 상단부에 대한 신뢰성 분석과 신뢰도 모델링 (Reliability Analysis and Reliability Modeling for KSLV-I Upper Stage)

  • 신명호;조상연
    • 항공우주기술
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    • 제7권1호
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    • pp.183-193
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    • 2008
  • 본 논문은 KSLV-I 상단부에 대한 고장모드 분석 결과와 시스템 수준의 비행시험 신뢰도 모델을 기술한다. 먼저, KSLV-I 상단부의 14개의 주요 기능과 비행시험 임무 프로파일을 분석하고, 기능 분석 결과와 임무 구간별 수행 기능 목록을 바탕으로 시스템 체계에 따른 상단부의 고장모드 계층 구조와 시스템 수준의 비행시험 신뢰도 모델을 구성한다.

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