The Tether Cable Motion Analysis of Mid-sized Aerostat Using Non-linear Cable Dynamics
An aerostat is helium buoyant, aerodynamically shaped and tethered lighter-than-air vehicle. Aerostats are used for advertising, communications relay, surveillance, and scientific observation missions. An aerostat is moored to ground by a tether cable. As the tether cable counters the forces of buoyancy and aerodynamic lift and drag acting on aerostat, no power plant is required for station keeping. Because of this, only environmental changes give load variation on aerostat hull. A tether cable, which anchors the aerostat to the ground, is a critical part on an aerostat. In the development of an efficient and reliable aerostat, optimized tether cable design is one of the key factors. To ensure that this is possible, it is necessary to estimate the tether reaction force accurately. This can be achieved through a dynamic analysis of the motion of the aerostat under atmospheric turbulence. The models developed in these studies focus on aerostat dynamics rather than on tether cable dynamics. To predict the aerostat response more accurately, the tether cable dynamic model should represent the large movement and extension of the cables. In this work, Lagrangian cable dynamic equation is used in a tethered aerostat analysis. A 32m aerostat developed by the Korea Aerospace Research Institute(KARI) was used in a numerical analysis. The responses of this aerostat under discrete gusts and simulated continuous turbulence were investigated.
aerostat tether dynamics gust response continuous turbulence cable tension
Kang Wanggu Lee In Lee Daesung Yeom Chanhong Lee Haechang Kim Dongmin
Aeronuatics Program Head Office, Korea Aerospace Research Institute, 115 Gwahangno,Yuseong-gu,Daejeo Korea Advanced Institute of Science and Technology, 335 Gwahangno,Yuseong-gu, Daejeon,Korea, 305-701 Aeronuatics Program Head Office, Korea Aerospace Research Institute, 115 Gwahangno,Yuseong-gu,Daejeo
国际会议
2010 Asia-Pacific International Symposium on Aerospace Technology(2010 亚太航空航天技术研讨会 APISAT 2010)
西安
英文
371-374
2010-09-01（万方平台首次上网日期，不代表论文的发表时间）