• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.39 no.9
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• pp.871-876
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• 2011

In this paper, the equilibrium flight conditions of a Korean Traditional Bangpae Kite with low aspect ratio were analyzed by it's aerodynamic data of wind tunnel test. The data of aerodynamic forces and center of pressure of the Kite were used to calculate the relative length of bridles to satisfy the condition of settling the kite to the static equilibrium steady state between ${\theta}=30^{\circ}{\sim}60^{\circ}$. From this equilibrium flight performance analysis, we obtained ($0.88{\pm}0.02$)c of the rear bridle length corresponding to 0.88c of fixed front bridle length. These results were exact agreement with the relative bridle lengths by Korean classical method.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.42 no.7
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• pp.561-566
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• 2014

Our Korean traditional cultural inheritance Bangpae Kite has the stable rectangular shield shape decorated with artistic paint or poem and a good flight performance due to the central wind hole. In this paper, to analyse the wind hole effect to kite performance we performed the wind tunnel testing of the various design factor of kite model and air flow visualization passing through the wind hole. As the result of aerodynamic analysis, we knew that the wind hole of kite displays similar function of slot system for the wing high lift device. This fact demonstrates that our ancestor understood the function of slot system and applied effectively to the development of kite flight performance.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.44 no.3
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• pp.195-202
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• 2016

There is two popular kites, Bangpae and Gaori. While the Bangpae kite is being widely loved by experts, the Gaori kite is popular for kids and beginners. Three types of Gaori kite product have been survayed on the tow point. The aerodynamic force on Gaori kite is numerically calculated by using Fluent. Through flight simulations at the tow point of each kite type, the new tow point, at which the required minimum velocity is lower than those of existing tow points, has been proposed as a standard. The required minimum velocity is the threshold wind velocity at which the kite begins to fly.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.39 no.9
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• pp.866-870
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• 2011

In this paper, the aerodynamic forces of a Korean Traditional Bangpae Kite with the wind hole and spanwise curved dihedral were measured by wind tunnel test. For the flat plate kite without the wind hole, the stall presents at ${\alpha}=35^{\circ}$ with $C_{Lmax}$=1.2. The Korean Traditional Bangpae Kite with the wind hole had $C_{Lmax}$=1.05 at ${\alpha}=30^{\circ}$ without the apparent stall phenomena. As the wind hole size growing, the lift and drag of kite were changed slowly after stalling angle of attack. As increasing the leading edge dihedral angle, lift curves were more increased than drag curves. As the growing of wind hole size, the effect of dihedral angle was constant affect to the lift and drag of kite.

• Journal of the Korean Society for Aviation and Aeronautics
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• v.25 no.3
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• pp.68-73
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• 2017

In this study, we design a low-cost test equipment for real-time image observation and transmission/reception distance test using 1m by 1.5m bang-pai kite. The image observation is made by using two servo motors to enable the camera to control the two axis attitude. The image observation equipment is hung on the string of a kite and the test is performed to observe the real time image. The transmission and reception distance test of the wireless RF transceiver module is conducted on the ground and in the air.

• Korean Architects
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• no.8 s.328
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• pp.102-107
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• 1996

판문점 '자유의 집' 설계경기 결과가 지난 6월 20일 공식 발표되었다. 조달청이 통일원의 '자유의 집' 개축 결정에 따라 지난 1월 설계를 공모하고 3월 29일까지 총 12개의 작품을 접수받은 결과 주.담건축(오평국)의 안이 당선작으로 선정되었으며, 주.모양건축(곽동희), 한메건축(이충기)안이 우수작으로 선정되었다. 이번 설계경기의 심사는 정명현(홍익대 심사위원장), 이선구(숭실대), 조대성(성균관대), 이호진(건국대)교수와 이준구(남북회담 사무국 실장)씨 등 5명이 맡았다. 당선된 주.담건축의 인은 자유의 집이라는 건물의 특성에 부합하도록 통일을 소망하는 의미로 두 손을 합장한 형태로 하였으며, 지붕은 강토를 수호한다는 취지로 방패연 모양을 형상화하였다. 1층에는 남측출입구와 이산가족 면회실이, 2층에는 남북통로 및 회의실, 3층에는 남북연락사무소와 다목적 예비실, 4층에는 90층 규모의 전망대가 위치할 예정이다. 오는 7월 실시설계안이 확정되면 97년쯤이면 판문점 자유의 집이 통일의 소망을 안고, 단아하고도 힘 있는 모습으로 자리잡을 것이다.