| Vertical Analysis of Wind Speed over South Korea for the Flight Safety of HALE UAV |
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Young-Jun Cho, Jong-Chul Ha, Reno K.Y. Choi, Ki-Hoon Kim, Eunha Lim, Su-Bok Kim, Jong-Hwan Yun |
1Observation Research Division, National Institute of Meteorological Sciences
2Studies & Analysis, Assessments Wing, Korea Air Force |
| 장기체공무인기의 운항안전을 위한 남한지역 고도별 풍속 분석 |
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조영준, 하종철, 최규용, 김기훈, 임은하, 김수복, 윤종환 |
1국립기상과학원 관측기반연구과
2공군 연구분석평가단 |
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| Abstract |
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We analyzed wind speed over South Korea for HALE UAV(High Altitude Long Endurance Unmaned Aerial Vehicle) flight safety. Annual variation of wind speed at 200 hPa showed that winter season was stronger than summer. According to latitude, wind speeds in January and August were found to be $52{sim}74m;s^{-1}$ and $15{sim}26m;s^{-1}$, respectively. Wind speed was stronger(weaker) at lower latitudes than higher latitudes in winter(summer). Frequency(%) of wind speed less than threshold value($18m;s^{-1}$) for the operation date was investigated. The days showing the frequency greater than 60 % in all altitudes of surface ~ 50 hPa showed the range of 1 ~ 33 days at 7 stations. Operation date was the longest period at Gosan. The appropriate date of HALE UAV operation at Gosan and Osan is considered as the middle of July ~ middle of August and end of July ~ early August, respectively. These results can be used to determine the operation date of HALE UAV. |
| Key Words:
HALE UAV, Jet stream, Rawinsonde, Threshold value |
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