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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/35625

    Title: A study of aircraft performance parameter under adverse weather conditions
    Other Titles: 在不良天候下之飛機性能參數化研究
    Authors: 王正民;Wang, Chen-min
    Contributors: 淡江大學航空太空工程學系碩士班
    宛同;Wan, Tung
    Keywords: 低空風切;亂流;大雨;飛機積冰;飛行安全;飛機性能;F-factor;Low Level Windshear;Turbulence;Heavy Rain;Ice Accretion;Aircraft Performance;Aviation Safety
    Date: 2005
    Issue Date: 2010-01-11 06:53:06 (UTC+8)
    Abstract: 為人所週知的,某些天氣現象會對飛行安全造成相當大的危害,例如低空風切、亂流、大雨和飛機積冰等現象。本研究的目的是欲藉由低空風切危害參數F參數為媒介,對在不良天候下飛行的飛機,其性能將會出現何種程度的衰減進行瞭解。
    It is well known that some meteorological phenomenon will cause sizable danger to aviation safety, for example: low level windshear, turbulence, ice accretion and heavy rain, etc. The purpose of this research is to find out, by using existing low level windshear F-factor as the medium, the degrees of performance degradation for aircraft flying under different adverse weather conditions.
    First of all, the study will set up the low level windshear 3-D wind field (including the side wind) and 3-D F-factor, then tally up the result with turbulence T-factor developed by our research group earlier. Secondly, take the aircraft performance amount calculated from heavy rain and ice accretion by using existing CFD techniques; convert it to an equivalent F-factor value. Add it with the previous result would get us the total performance amount under these weather conditions. At the end, tally up the different F-factor and T-factor values from the four adverse weather conditions that the aircraft might face, forming FT-factor and the newly created FW-factor, which will lead to the total aircraft performance degraded values in various adverse weather conditions. It is believed that the FW-factor represents a measuring weighting parameter for each adverse weather condition, which might co-exist with each other.
    Taiwan is located at the intersection of the world’s largest ocean and land, which makes its meteorological phenomena full of varieties than that in many countries. In recent years, there are several accidents caused by adverse weather conditions. Therefore, it is necessary to investigate the meteorological phenomena that might be threat to aviation safety. Through the combining efforts in flight dynamics, aerodynamics, performance parameter developments, this study represents a first try in quantifying different adverse weather influences on aircraft performance degradation. It is hoped that the research results will be useful to local aviation safety community and help to eliminate some of the loss in lives and properties.
    Appears in Collections:[Graduate Institute & Department of Aerospace Engineering] Thesis

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