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박금용,이종건,오세윤 한국항공우주학회 2015 한국항공우주학회 학술발표회 논문집 Vol.2015 No.4
본 연구는 항공기 장착물 분리 풍동시험과 관련한 최신 기법의 확보를 목적으로, 무선 자료획득 기반의 장착물 운동궤적 추출에 관한 사전연구 차원에서 수행되었다. 확보된 시험기법의 적용성 확인을 위해 기능시험용 키트를 제작하고 계측되는 센서신호를 점검하였다. 풍동시험을 통한 다양한 조건 하에서의 적용 및 결과 검증은 고속이미지촬영기법 등과의 교차 검토를 통해 추후 진행될 예정이다. This preliminary study investigates the wireless DAQ techniques for the store separation test in wind tunnel to aquire the store trajectory data. The functional test has been performed using the integrated sensor kit for wireless DAQ to evaluate the developed technique. The wind tunnel test will be conducted under the various condition later to validate the wireless data through cross checking the high speed image data.
박금용,성열훈,한재흥 한국항공우주학회 2021 International Journal of Aeronautical and Space Sc Vol.22 No.5
A cable-driven model support concept is suggested and implemented in this paper. In this case, it is a cable suspension and balance system (CSBS), which has the advantages of low support interference and reduced vibration responses for effective wind tunnel tests. This system is designed for both model motion control and aerodynamic load measurements. In the CSBS, the required position or the attitude of the test model is realized by eight motors, which adjust the length, velocity, and acceleration of the corresponding cables. Aerodynamic load measurements are accomplished by a cable balance consisting of eight load cells connected to the assigned cables. The motion responses and load measurement outputs were in good agreement with the reference data. The effectiveness of the CSBS against aerodynamic interference and vibration is experimentally demonstrated through comparative tests with a rear sting and a crescent sting support (CSS). The advantages of the CSBS are examined through several wind tunnel tests of a NACA0015 airfoil model. The cable support of the CSBS clearly showed less aerodynamic interference than the rear sting with a CSS, judging from the drag coefficient profile. Additionally, the CSBS showed excellent vibration suppression characteristics at all angles of attack.
슈퍼바이저의 커뮤니케이션 유형에 따른가맹점별 계약관리 성과: 프랜차이즈 ‘간이역’ 사례를 중심으로
박금용,박현식,박희나 한국프랜차이즈경영학회 2015 프랜차이즈경영연구 Vol.6 No.1
As franchise industry has grown, the role of a supervisor who is a contact point between franchisor and franchisees has become more vital to success of the business. This research, focusing on his/her specific role, explores communication type, leadership type, and followership type of the supervisor in relations with the organization, franchisor, and franchisees, respectively. Furthermore, we compared performance of franchises by the three types above through the franchise contract management leverage (FCML) which reflects business performance both qualitatively and quantitatively. According to the analysis on supervisors of a franchise business, ‘Ganiyeok’, the majority of supervisors’ communication type were either supportive style or directive style. For the leadership type, team-type and impoverished-type leaders were the majority, while effective or passive followership appeared highest in followership type. In addition, supportive supervisors in communication style, team-type supervisors in leadership style, and effective supervisors in followership had highest FCML, while reflective and directive styles, impoverished style, and passive style had lowest FCML. Primary goal of a franchise business is stable profit generation. This study not only examined what characteristics supervisors need and which style is insufficient, but also proposed tailored solutions for each style. Thus, we confirmed that debates on franchise can be approached in perspective of both communication and business, and we further suggest diverse approaches on future franchise business.