중형수송기 Aircraft Classification Number 예측

정진덕,배중원,이해창,Chung, Jin-Deog,Bae, Joong-Won,Lee, Hae-Chang 항공우주시스템공학회 2010 항공우주시스템공학회지 Vol.4 No.3

ACN(Aircraft Classification Number) is allocated by marketing group during early stage of aircraft design phase and is a critical parameter to decide whether the designed aircraft can be landed or not in a certain airport. The loading on the main landing gear wheels, selection of main landing gear tire and estimation of ACNs for flexible and rigid pavements were done for the proposed medium-class aircraft. The estimated ACN values are compared with the similar class aircraft. And PCN(Pavement Classification Number) values of airport in Korea are surmmarized. Results showed that the currently proposed medium-class aircraft can land any airport in Korea.

울릉도해역에서 삼중자망에 의한 어획물의 종조성

정상덕 ( Sangdeok Chung ),차형기 ( Hyung Kee Cha ),이재봉 ( Jae Bong Lee ),이해원 ( Hae Won Lee ),양재형 ( Jae Hyeong Yang ) 한국어업기술학회 2015 수산해양기술연구 Vol.51 No.4

Species composition in the coastal waters off Ulleungdo of Korea were examined based on catches bimonthly collected by trammel net in 2013. A total of 711 individuals and 181.9 Kg were caught and catches were composed of 4 classes 15 orders 27 families 52 species including 44 Pisces, 4 Gastropoda, 3 Cephalopoda, and 1 Echinodermata. The dominant species in biomass were File fish (Thamnaconus modestus), Atka mackerel (Pleurogrammus azonus), and Greenling (Hexagrammos otakii). Data were summarized using hierarchical cluster analysis (HCA) and detrended correspondence analysis (DCA) to examine similarity in species composition for each month, and community structure in Ulleungdo was divided into two groups. Community structures in February, April and December with low temperature and well-mixed surface water were distinguished from those in June, August and October with high temperature and strong stratification, which could be attributed to temporal changes in dominant species. Atka mackerel and Spear squid mainly caught in February and April, disappearing in June, August and October, and File fish outburst was shown in October. Because the water off Ulleungdo has been under low human pressure, it could be a good case study to elucidate effects of climate change on community structure and ecosystem in the East sea. Continuous surveys and further studies are required to demonstrate migration route and distribution of dominant species and long-term changes in community structure in the water of Ulleungdo.

뇌성마비 아동에 대한 대운동 기능검사의 신뢰도 분석

임선규,이해덕,Lim, Sun-Kyu,Lee, Hae-Deok 대한물리치료과학회 1997 대한물리치료과학회지 Vol.4 No.1

The purpose of this studied was to examine the reliability analysis of the GMFM in children with C.P. The subject of this study were 40 C. P patient who had been hospitalized Department of Sam-Yook Rehabilitation Hospital. Subjects were 28 boys and girls, aged 6 to 8 years. Reliability of each dimension of the GMFM were analyzed using Cronbach coefficients and to examine the intra-rater reliability were using Pearson correlation coefficients. The result of reliability analysis of the GMFM revealed higher reliability values. The reliability of the total dimension score was 95. Test-retest revealed intra-rater correlation coefficients from .71 to .98. The study presents that GMFM is useful in assessment of function of children with C. P by the quantitative description of the function.

다리의 지방감소를 위한 보행형태 변화에 관한 연구

배성수,이해덕,원중영,윤창구,최흥식,Bae, Sung-Soo,Lee, Hea-Deok,Oun, Jung-Young,Yoon, Chang-Goo,Choi, Houng-Sik 대한물리치료과학회 1997 대한물리치료과학회지 Vol.4 No.1

We developed the shoes which is specially designed to decrease the leg's fatness during walking and to improve the body figure. The analysis of the gait cycle and the shoes gave changes at the swing phase. We examined the results to 30 girl students of Yeong Dong Junior College for 5 weeks from 27, October to 29, Nobember in 1996, and the results were also obtained in decrease of their thigh's size in circumference. The results of the analysis are as followings; 1) After experiment circumference of the right thigh was decreased 0.04cm in noncontrol group and significantly decreased 1.04 cm in control group(p<0.01). 2) After experiment circumference of the left thigh was decreased 0.27 cm in noncontrol group and significantly decreased 1.17cm in control group(p<0.01). 3) After experiment circumference of the right calf of the leg decreased 0.09 cm in noncontrol group and significantly decreased 0.54 cm in control group(p<0.01). 4) After experiment circumference of the left calf of the leg decreased 0.21 cm in noncontrol group and significantly decreased 0.47 cm in control group. 5) After experiment body weight were not changed significantly in both group. In these results, if the people want to exercise the analysis of fat in the thigh, put on the shoes which improves the body figure and do daily work, and it will be naturally decreased the fat in thigh and they will maintain the beauty lines of the legs. There weren't any changes in the body weight while the fat of thigh in circumsference was analysed and decreased. It means that because the weight of the fat is very light, there weren't any changes in body weight.

중형급 터보프롭 항공기의 실속특성

박영민,이해창,김철완,정진덕 한국항공우주학회 2012 한국항공우주학회 학술발표회 논문집 Vol.2012 No.4

중형급 터보프롭 항공기에 대한 실속 특성을 전산해석 방법을 이용하여 특성을 분석하였다. 항공기의 실속 특성은 프로펠러와 고양력 장치의 장착 조합에 따른 형상별 전산해석 결과를 통해 분석하였다. 분석결과 순항 형상의 경우 동체/날개 페어링에서 주요 유동박리가 발생하며 프로펠러 후류로 인해 점차 감소함을 알 수 있었다. 고양력 장치를 장착한 경우 나셀 바깥쪽에서 주요 유동박리 현상이 발생하였고 프로펠러가 회전하는 경우 상대속도 감소와 유효 받음각 증가로 나셀 바깥쪽 날개 부분은 조기에 실속에 잠김을 알 수 있었다. The stall characteristics of mid-sized turbo-prop aircraft was analyzed by using computational fluid dynamics. Stall characteristics were analyzed by using CFD results according to the permutation of propeller and double slotted flap. In case of clean configuration, major flow separation was observed on the wing/body faring surface and the separation region was reduced as the propeller slipstream effect was increased. In case of high lift configuration, dominant flow separation was observed on the outboard wing surface. As the propeller rotates, the outboard flow separation was accelerated by the increase of relative local angle of attack and decrease of local velocity.

중형항공기급 동체의 초기 구조형상 설계

강왕구,정진덕,이해창 한국항공우주학회 2010 한국항공우주학회 학술발표회 논문집 Vol.2010 No.4

95인승급 중형항공기의 초기형상설계

황인성,정진덕,강왕구,이해창 한국항공우주학회 2014 한국항공우주학회 학술발표회 논문집 Vol.2014 No.4

동력패러글라이더는 엔진과 프로펠러 그리고 패러글라이더(Para-Glider, 낙하산과 행글라이더 합성어) 특성을 결합하여 하늘을 날 수 있도록 만든 것으로, 낙하산의 안정성, 분해조립 운반의 용이성과, 행글라이더의 활공성 속도성의 장점이 있으며, 좁은 평지에서도 이착륙이 가능하다. 본 논문에서는 장시간 체공과 비닉성 확보가 가능하며, GPS 유도 및 선도기 추적기법을 이용한 자율군집 비행으로 재난 고립지역 긴급구호, 화물 인원 운송, 통신중계, 감시 정찰 등이 가능한 다목적 동력패러글라이더 유무인기 운용방안을 제시하였다. Powered Para-Glider is a flying vehicle with combination of the engine, propeller and para-glider(parachute & hang-glider). It has a stability, easiness of disassembly/assembly/carry like a parachute, also has a glide capability and horizontal velocity as a hang glider to take-off landing on the narrow place. This paper shows a operation methods of unmanned/manned multi-purpose powered para-glider which can conduct a emergency aid for a disaster/isolation area, the personnel/cargo transportation, communication/rebroadcast and watch/reconnaissance based on self-control formation flight using GPS guidance and pathfinder chasing technology with a long endurance, secrecy.

Initial Configuration Layout Design for 95-Seat Regional Turboprop Aircraft

황인성,정진덕,강왕구,이해창 한국항공우주학회 2014 International Journal of Aeronautical and Space Sc Vol.15 No.2

The initial configuration for 95-seat passenger regional turboprop aircraft, the so called KC950, was designed to meet themarket requirements. This paper prescribes the initial design based upon aircraft design guidelines and compared thecompetitive aircraft configurations after considering the related FAR 25 regulations. More specifically, results of designdescribe how to select the fuselage cross-sectional area, how to layout the cabin, and how to determine the overall shapeand physical dimension of the fuselage. Sizing of wing and empennage areas is estimated using empirical equations and tailvolume coefficients in this design. Some design guidelines to determine wing sweep angle, taper ratio, incidence angle andlocation are also introduced.

동통 유발점에 대한 Intramuscular Stimulation(IMS) 후 시간 경과에 따른 압통 역치에 대한 비교

홍순일,이해덕,Hong, Soon-Il,Lee, Hae-Deok 대한물리치료과학회 1996 대한물리치료과학회지 Vol.3 No.4

The purpose of this study is to help understand the pressure pain threshold's comparison following time progress after IMS to the trigger point and recognize this methode' effect for treating these kind of myofascial pain syndrome in clinic. Resently, myofascial pain syndrome is a disease that keeps the highest rate of patients visiting the Department of Rehabilitation Medicine. and so one should understand the change of IMS'effect following time progress for patients to be dealt rightly in clinic. In addition, the theory and treatment of myofascial pain syndrome needs to be understood or to be dealt rightly for therapists to treat and to approach to the right moment in right mode for the patients with myofascial pain syndrome. Therefore, one should know where to stimulate and why one stimulate trigger point and what effect one obtain after IMS.

잡초 제거에 의한 Miscanthus × giganteus의 바이오매스 증가: 잡초와의 조기 자원 경쟁 우위의 중요성

이상협,한경덕,김윤하,이해속 강원대학교 농업생명과학연구원 2022 강원 농업생명환경연구 Vol.34 No.3

Silver grass (Miscanthus × giganteus) has traditionally been used as a feedstock and for ornamental and medicinal purposes. Recently, however, the biomass uses of silver grass have also been highlighted. This grass comprises 40% cellulose, 25% hemicellulose, and 21% lignin, the cellulose component of which can be converted into glucose, as a source of biofuel, whereas the lignin can be used as a resource for UV protectant film development. Given these utilities, silver grass is considered to have high value as a biomass plant. Consequently, it is desirable to develop efficient methods for the cultivation of this grass. Some studies have reported that weed control is necessary during the initial 2 years of silver grass cultivation; however, none of these studies have been conducted in a Korean cultivation environment. In this study, we accordingly evaluated the efficacy of four herbicides commonly used in Korea for weed control during silver grass cultivation. We found that herbicide treatments have beneficial effects on the growth of silver grass, notably with respect to branching. On the basis of our findings, we conclude that to maximize the final biomass yield, a high level of weed control is essential during the initial 2 years of silver grass cultivation.