消散尾 的英文怎麼說
中文拼音 [xiāosǎnwěi]
消散尾
英文
dissipation trail-
But i reckon it was more than a cat - nap, for when i waked up the stars was shining bright, the fog was all gone, and i was spinning down a big bend stern first
我醒來時,只見星星亮晶晶,迷霧已經煙消雲散,我架的小舟舟尾朝前,正飛快地沿著一處大的河灣往下遊走。The surface of propeller, hub and the vortex of blade is discreted by a number of small hyperboloidal quadrilateral panels with constant source and doublet distribution
槳葉、槳轂表面和螺旋槳尾渦面採用四邊形雙曲面元離散,以消除面元間的間隙。Efficacy : pure natural bone collagen contain plenty of collagen, can repair the tired and damaged cells, tighten the skin around eyes quickly, improve the metabolism of water around eyes, help to letdown the black circle, crow ' s - feet, remove the flecks around eyes, make your eyes return tight and bright, emanate charming gloss
功效:純天然骨膠原成分,內含肌膚大量需求的膠原蛋白,能有效修復疲憊受損的肌膚細胞,並迅速緊致眼部肌膚,恢復眼部肌膚彈性,改善眼部周圍的水分循環,有助減退黑眼圈,魚尾紋,並消除眼部色斑,令雙眼恢復緊致明亮,散發迷人光彩!Wake vortex separation standards are used to prevent hazardous wake vortex encounters which mainly found in the final approach course within the airport termination zone. firstly, this paper analysis the mechanism of the vortex decay and research the influence on the safety of the flight ; then. several different radar wake vortex separation standards are compared and some basic guidelines are developed to establish the future vortex standards. in addition, one kind of advance vortex classification for the civil airplane is proposed. secondly, an encounter hazard model which established for the following aircraft and a simple vortex decay model which mostly concern with the proceeding one are developed ; and a safe separation model can be derived from the both. finally, through the simulation calculation, the correctness of the vortex classification of different types of aircrafts are tested and proved
本課題對雷達管制條件下的最小尾流間隔標準進行了較為詳細的分析和研究;首先對尾流的形成和消散機理以及尾流對飛行安全的影響做出了詳細的分析,然後就目前實行的幾種不同的最小尾流間隔標準進行了比較和分析,提出了相關的幾條準則和一種改進的機型尾流分類標準;在這之後,採用理論分析和統計數據分析相結合的方法,建立了尾流危險遭遇基本模型和尾渦消散模型;並在此基礎上對民用航空不同機型的尾流分類的合理性進行了計算和評估,為最小尾流間隔標準的確定和改進提供了初步的理論依據。分享友人