But it increases the viscous forebody drag including the skin friction drag and shock wave drag.

但卻增大了包含摩擦阻力和激波阻力的粘性前部阻力日韩毛片1区。

The accurate prediction of drag is key to the design of the low Reynold′s number flight vehicle,and the accurate prediction of friction drag which is induced by separation and transition of the boundary layer is key to the accurate prediction of drag.

而與附面層分離和轉(zhuǎn)捩相關(guān)的摩擦阻力的精確計算則是此類飛行器阻力精確計算的關(guān)鍵精品综合日韩久久久久久久。

Test results showed that the bionic nonsmooth structures on the tail of the models can obviously reduce the drag due to the pressure drop, especially for the model riblet nonsmooth form, its pressure drag was reduced by 25.3%, and its total drag was reduced by 11.12%.

試驗結(jié)果表明97偷自拍亚洲综合，布置在尾部的非光滑結(jié)構(gòu)能夠有效地降低模型的壓差阻力囯产AV国片精品一区二区，尤其是棱紋狀非光滑形態(tài)模型女生被操免费网站，壓差阻力降低了25.3%黄片的视频，總阻力降低了11.12%。

Rapid cell selected, regional, rows or columns: the mouse click to select the current cell; click the region to be selected first cell, and then drag the mouse to the last cell can be two selected region between; worksheet click the Select All button, you can select the current worksheet; hold down the Ctrl click or drag using the mouse, you can select multiple nonadjacent cells or regional; select a region first cell, hold down the Shift key click on the angle of regional cells, can be between the selected rectangular area; click the line number can be selected corresponding to the entire line; click out the corresponding label can be selected out of the whole; along its line number or a list of drag the mouse, or to select the first row or first column, hold down the Shift key to select the end of the row or column, you can select a number of adjacent rows or columns; first select the first row or first column, and then hold down the Ctrl key to select other non-adjacent rows or columns; If you want to increase or decrease in the activities of the cell area can be selected by holding down the Shift key click the lower right corner of the region the last cell, the cell activities and the click between the cells will become a rectangular area to select a new region.

快速選中單元格国产孕妇对白在线观看网站大全下载、區(qū)域欧日美韩二区、行或列：鼠標(biāo)單擊可以將當(dāng)前單元格選中；單擊待選中區(qū)域的第一個單元格91人妻自拍，然后拖動鼠標(biāo)至最后一個單元格免费A片视频在线观看，可以將兩者之間的區(qū)域選中；單擊工作表的全選按鈕国产又黑又粗又爽的免费视频，可以將當(dāng)前工作表選中欧美在线成人亚洲；按住 Ctrl 單擊或使用鼠標(biāo)拖動，可以選中不相鄰的多個單元格或區(qū)域AAA黄色网址；選中某區(qū)域的第一個單元格欧美激情四射xXXX888，按住 Shift 鍵單擊區(qū)域?qū)堑膯卧瘢梢詫烧咧g的矩形區(qū)域選中婷婷五月丁香社；單擊行號可將對應(yīng)的整行選中日日碰人人操；單擊列標(biāo)號可將對應(yīng)的整列選中；沿行號或列表號拖動鼠標(biāo)免费网站看a级来，或者先選中第一行或第一列国产一级黄片视频久久baoyu，按住 Shift 鍵選中結(jié)束行或列，就可以選中相鄰的多個行或列；先選中第一行或第一列对白一区仑乱，然后按住 Ctrl 鍵選中其他不相鄰的行或列婷婷色在线观看网站；如果您想增加或減少活動區(qū)域中的單元格，可以按住 Shift 鍵單擊選中區(qū)域右下角的最后一個單元格美女自慰喷水网站，活動單元格和所單擊的單元格之間的矩形區(qū)域就會成為新的選中區(qū)域可以免费看黄的网页。

The energy exchange analysis indicates that gliding energy efficiency is dependant on the lift drag ratio of the wings and gliding angle of the hull. Through the calculation in this thesis, it can be concluded that enhancing the lift drag ratio can largely improve the energy efficiency when the gliding angle is in the range of 10to 40 degree, and when lift drag ratio is fixed, there exists a special gliding angle for the maximum of the efficiency, which provide theoretical basis for the design of operating parameters.

通過能量轉(zhuǎn)換分析，得出滑翔機航行效率由機翼升阻比和機身航行角決定久久国产精品99久久久久久，航行角在10~40度范圍內(nèi)91,偷拍视频，增大機翼升阻比可顯著提高航行效率；并由計算得出一级毛片女人与拘交久久剧场，在升阻比一定的情況下性黄片一级黄片性视频，總存在一個使滑翔機航行效率達到最大的航行角度，為樣機工作參數(shù)設(shè)計提供了理論依據(jù)欧美性爱,激情性交网。

Using conformal mapping, the longitudinal protrusion height and the lateral protrusion height on the V-grooved surfaces are given, on this basis, some drag reducing features in parallel-flow, cross-flow and enlarge- flow are presented and analyzed; In addition, drag reducing features with blade-shaped grooves and U-shaped grooves are discussed, consequently, the riblets designing criterions are suggested which will reduce the drag and noise most effectively underwater.

3利用保角變換方法求出V—型條紋的縱向和橫向突出高度www.αeαe.28.com欧美黄色片，在此基礎(chǔ)上得出縱向流、橫向流和帶角度流動時的降阻特性玖玖色影院，并分析結(jié)果欧美日韩国产VA另类在线观看；而且分析了葉片型條紋和U—型條紋表面上的降阻情況，提出水下具有最佳降阻效果的條紋表面設(shè)計準(zhǔn)則欧美日韩视频在线免费观。

In the field we tested the drag throughout its range by adjusting the clicking drag star. At each setting, the performed as expected ?smooth and consistent with no hesitation. Cranked down, the drag can easily haul in big bass or put a dead-stop to big stripers on the run.

在實地測試中狼狼狼色精品视频在线播放，我們有意識的將卸力調(diào)整到不同的度數(shù)來測試它的整個拉力范圍，在每一個區(qū)間范圍內(nèi)色诱久久av无码电影，卸力表現(xiàn)都非常出乎意料毛片入口大全，順化，流暢污小蝌蚪视频在线观看，平穩(wěn)欧美激情亚洲，沒有磕絆，深水表現(xiàn)中去看99久久黄色一级片，其力量可以輕易將大嘴鱸甚至大海鱸拿下自拍偷拍29p。

Wave drag is more complicated than induced drag and parasitic drag.

我的譯文：波阻要比誘導(dǎo)阻力和寄生阻力復(fù)雜得多。

The inviscid Euler drag solution is separated into an induced drag component and a wave drag component.

在采用歐拉方程進行氣動力計算過程中午夜精品美女爱做视频，由表面壓力積分來估計的阻力只考慮了壓差阻力一区二区三区不卡高清视频，計算得到的無粘阻力分解成誘阻和波阻。

Then a model to distinguish skin drag coefficient and form drag coefficient is established based on a floe drag experiment by using a wave-current tank in laboratory, and the quantitative relationship between skin/form drag coefficient and floe geometric parameters is established as a result.

水拖曳系數(shù)同海冰幾何形態(tài)參數(shù)的關(guān)系才是提高拖曳系數(shù)適應(yīng)性和準(zhǔn)確性的最佳途徑国产午夜羞羞视频。