CAJ | 학술논문

适航条款要求在结冰条件下，应确保风挡表面不能结冰，防止影响飞行员视界。因此应确定结冰条件下具有足够的电加热功率使风挡表面温度高于冰点(零度)，而影响加热功率的关键因素是外表面的对流换热系数。为了获得准确的对流换热系数，在低速风洞中测量了不同工况下风挡表面对流换热系数，并利用CFD方法建立了一个仿真风洞模型，计算试验工况下的风挡表面对流换热系数，通过测量值来校核CFD的计算值，获得一个修正方法，最终使用这个修正方法计算获得其他工况下的对流换热系数。
괄항조관요구재결빙조건하，응학보풍당표면불능결빙，방지영향비행원시계。인차응학정결빙조건하구유족구적전가열공솔사풍당표면온도고우빙점(령도)，이영향가열공솔적관건인소시외표면적대류환열계수。위료획득준학적대류환열계수，재저속풍동중측량료불동공황하풍당표면대류환열계수，병이용CFD방법건립료일개방진풍동모형，계산시험공황하적풍당표면대류환열계수，통과측량치래교핵CFD적계산치，획득일개수정방법，최종사용저개수정방법계산획득기타공황하적대류환열계수。
According to airworthiness standards, the windshield surface should avoid icing to ensure the pilot’ s visual field. A reasonable heating power should be determined to prevent windshield icing. The convective heat transfer ( HTC) is critical factor to affect heating power setting. For obtaining more accurate HTC, a low velocity wind test has been performed in this paper. And a CFD model has been built as same with test condition to calcu-late HTC. Comparing and analysis have also been done for finding a reasonable HTC modification method. In the end, the modification method has been used for the other cases.