Wingsuit Flying

Wingsuit Flying,alsocalled wingsuiting,is a variation of skydiving.In this sport,a person will fly in the air using a special jumpsuit called a wingsuit.This wingsuit comprises of two arm wings and a single leg wing which has inflatable nylon cells.The modern wingsuits were developed in the 1990's.They are sometimes referred to as birdman suits or flying squirrel suits.

模糊WINGS视角下的ANP加权矩阵新构造方法

构造因素集加权矩阵是ANP系统未加权超矩阵到加权超矩阵转化的一个关键技术。然而从已有的三种构造方法看,两两比较法比较机理混乱,而等权矩阵假设构造法通常是无效的,并且基于DEMATEL(决策试行与评价实验室)的构造方法不仅存在忽视因素集自身强度的内在不足,而且也难以反映专家在对因素集之间影响关系判断时存在的"不精确性"。为克服上述缺陷,提出一种模糊WINGS(加权影响情景下的非线性测度体系)视角下的ANP因素集加权矩阵新构造方法。该方法一方面给出改进后的模糊DELPHI决策程序,充分考虑了专家判断过程中的"不精确性"。另一方面,系统提出模糊WINGS的方法思路,在系统因素集影响关系判别时充分考虑了因素集的自我影响强度,使因素集直接影响矩阵的构造更为合理。实例对比验证结果表明,该方法是科学合理的,有着较强的实践应用可操作性。

Computational aerodynamics of low Reynolds number plunging,pitching and flexible wings for MAV applications

Micro air vehicles （MAV＇s） have the potential to revolutionize our sensing and information gathering capabilities in environmental monitoring and homeland security areas. Due to the MAV＇s＇ small size, flight regime, and modes of operation, significant scientific advancement will be needed to create this revolutionary capability. Aerodynamics, structural dynamics, and flight dynamics of natural flyers intersects with some of the richest problems in MAV＇s, inclu- ding massively unsteady three-dimensional separation, transition in boundary layers and shear layers, vortical flows and bluff body flows, unsteady flight environment, aeroelasticity, and nonlinear and adaptive control are just a few examples. A challenge is that the scaling of both fluid dynamics and structural dynamics between smaller natural flyer and practical flying hardware/lab experiment （larger dimension） is fundamentally difficult. In this paper, we offer an overview of the challenges and issues, along with sample results illustrating some of the efforts made from a computational modeling angle.

Wings Plus设备纺22 dtex/24 f细旦聚酯FDY工艺探讨

在熔体直纺装置上,采用Wings FDY Plus工艺,对22 dtex/24 f细旦聚酯全拉伸丝(FDY)的生产工艺进行了研究。通过对熔体输送温度、纺丝组件、喷丝板孔径、缓冷区、吹风冷却条件、上油条件、卷绕拉伸工艺等进行优化与控制,生产出性能优异的细旦FDY,纤维断裂强度≥4.68 cN/dtex、断裂强度CV值≤0.95%、条干不匀率≤0.63%,纤维染色效果好,无深浅丝、无条纹。

WINGS系统纺预取向丝的结构与性能稳定性分析

以WINGS(Winding Integrated Gadet Solution)纺丝系统和传统ACW(Advanced Craft Winde)r纺丝系统为研究对象,比较同一纺丝位不同丝饼间预取向丝(POY)在相同纺丝条件下的结晶度、双折射率、力学性能、沸水收缩率等的变化规律。研究发现,WINGS纺丝系统同一纺丝位不同丝饼间POY的双折射率、结晶度、断裂强度、断裂伸长率、初始模量及沸水收缩率各值的变化率(CV值)均低于传统ACW工艺生产的POY的值,表明WINGS纺丝系统制得的POY有更稳定的结构和性能。

Experimental investigations of the functional morphology of dragonfly wings

Nowadays, the importance of identifying the flight mechanisms of the dragonfly, as an inspiration for designing flapping wing vehicles, is well known. An experimental approach to understanding the complexities of insect wings as organs of flight could provide significant outcomes for design purposes. In this paper, a comprehensive investigation is carried out on the morphological and microstructural features of dragonfly wings. Scanning electron microscopy （SEM） and tensile testing are used to experimentally verify the functional roles of different parts of the wings. A number of SEM images of the elements of the wings, such as the nodus, leading edge, trailing edge, and vein sections, which play dominant roles in strengthening the whole structure, are presented. The results from the tensile tests indicate that the nodus might be the critical region of the wing that is subjected to high tensile stresses. Considering the patterns of the longitudinal corrugations of the wings obtained in this paper, it can be supposed that they increase the load-bearing capacity, giving the wings an ability to tolerate dynamic loading conditions. In addition, it is suggested that the longitudinal veins, along with the leading and trailing edges, are structural mechanisms that further improve fatigue resistance by providing higher fracture toughness, preventing crack propagation, and allowing the wings to sustain a significant amount of damage without loss of strength.

EXPERIMENTS AND ANALYSIS OF HYSTERESIS OF VORTEX BREAKDOWN OVER PITCHING-UP DELTA WINGS

An investigation of the hysteresis of vortex breakdown over pitching-up deltawings is presented. Based on experiments, there are two main reasons which can be usedto explain the hysteresis of vortex breakdown. One is the time or phase lag due to the ini-tial suPerPOsition of linearized small disturbance, which enlarges the range of the incidenceof keeping attached flow and postpones the initial incidence of vortex breakdown. Theother is the reduction of adverse pressure gradient due to the periphery centrifugal instabil-ity after the concentrated vortex has come into being, which is the key reason of hystere-sis of vortex breakdown- The structure of vortex over a pitching up delta wing can be di-vided into three layers, which is not a significant a1teration compared with that of vortexover a static delta wing.

Aerodynamics of the Cupped Wings during Peregrine Falcon’s Diving Flight

During a dive peregrine falcons can reach velocities of more than 320 km/h and makes themselves the fastest animals in the world. The aerodynamic mechanisms involved are not fully understood yet and the search for a conclusive answer to this fact motivates the three-dimensional (3-D) flow study. Especially the cupped wing configuration which is a unique feature of the wing shape in falcon peregrine dive is our focus herein. In particular, the flow in the gap between the main body and the cupped wing is studied to understand how this flow interacts with the body and to what extend it affects the integral forces of lift and drag. Characteristic shapes of the wings while diving are studied with regard to their aerodynamics using computational fluid dynamics (CFD). The results of the numerical simulations via ICEM CFD and OpenFOAM show predominant flow structures around the body surface and in the wake of the falcon model such as a pair of body vortices and tip vortices. The drag for the cupped wing profile is reduced in relation to the configuration of opened wings (without cupped-like profile) while lift is increased. The purpose of this study is primarily the basic research of the aerodynamic mechanisms during the falcon’s diving flight. The results could be important for maintaining good maneuverability at high speeds in the aviation sector.

Biocompatibility and biosafety of butterfly wings for the clinical use of tissue-engineered nerve grafts

In a previous study, we used natural butterfly wings as a cell growth matrix for tissue engineering materials and found that the surface of different butterfly wings had different ultramicrostructures, which can affect the qualitative growth of cells and regulate cell growth, metabolism, and gene expression. However, the biocompatibility and biosafety of butterfly wings must be studied. In this study, we found that Sprague-Dawley rat dorsal root ganglion neurons could grow along the structural stripes of butterfly wings, and Schwann cells could normally attach to and proliferate on different species of butterfly wings. The biocompatibility and biosafety of butterfly wings were further examined through subcutaneous implantation in Sprague-Dawley rats, intraperitoneal injection in Institute of Cancer Research mice, intradermal injection in rabbits, and external application to guinea pigs. Our results showed that butterfly wings did not induce toxicity, and all examined animals exhibited normal behaviors and no symptoms, such as erythema or edema. These findings suggested that butterfly wings possess excellent biocompatibility and biosafety and can be used as a type of tissue engineering material. This study was approved by the Experimental Animal Ethics Committee of Jiangsu Province of China(approval No. 20190303-18) on March 3, 2019.

用于聚酯POY生产的WINGS

Oerlikon Barmag在2007年ITMA国际纺织博览会上以提出的用于化纤装置的全新理念,首次做了名符其实的成功展示。在ITMA2007上展示的新型POY纺丝机的WINGS(卷绕集成导辊的方案),在2008年卖出了1600多次。采用WINGS的几种装置在印度和中国同时成功投产。WINGS已占有全球市场份额的50%以上。

EXPERIMENTAL INVESTIGATION ABOUT THE UNSTEADY AERODYNAMIC CHARACTERISTICS OF WINGS

The technical programme and measurement system of experimental investigation of unsteady dynamic characteristics are introduced. The unsteady lift characteristics of a delta wing with leading edge sweep angle 60°are investigated when the wing is rapidly pitching up at incidence from 0°until 90°.The experimental results are that the maximum lift coefficient and stall incidence are increased with increased pitch-up rate. when the wing is rapidly pitching up. The infuences of reduced frequency. average incidence, the oscillating amplitude and pitch axis location on the unsteady instantaneous force produced by oscillating wings are investigated too.

Parametric CAD Modelling of Aircraft Wings for FEA Vibration Analysis

Excessive vibration of aircraft wings during flight is harmful and may cause propagation of existing cracks in the material, leading to catastrophic failures as a result of material fatigue. This study investigates the variations of modal characteristics of aircraft wings with respect to changes in the structural configurations. We develop parametric Computer-Aided Design (CAD) models to capture new design intend on the aircraft wing architectures. Subsequent Finite Element Analysis (FEA) based vibration analysis is performed to study the effects of architecture changes on the wing’s natural frequencies and mode shapes. It is concluded that the spar placement and the number of ribs have significant influence on the wing’s natural vibration properties. Integrating CAD modelling and FEA vibration analysis enables designers to develop alternative wing architectures to implement design requirements in the preliminary design stage.

Evaluation of Nutritional Value and Acceptability of Chicken Nuggets Produced by Chicken Wings and Dehydrated Shellfish

Our study investigated the effect of utilizing chicken wings and dehydrated shellfish to produce chicken nuggets rich in protein, minerals and vitamins. The proximate composition, nutritional value, physical and sensorial properties were evaluated. The differently prepared chicken nuggets were supplemented with dehydrated shellfish CN 0%, CN 2%, CN 4% and CN 6%. There was a significantly reduction in moisture and an increasing in protein content (P < 0.05) in all Chicken Nuggets (CN) in comparison to the control. Fat content was significantly higher in CN 0% than CN 2%, CN 4% and CN 6%. Ash content was increasing with added dehydrated shellfish, while the reduction in carbohydrates and total calories of the different chicken nuggets were noticed with the significant gradual rise in pH values, TBA values showed no significant difference (P < 0.05) between chicken nuggets. Results showed that using dehydrated shellfish in preparing chicken nuggets caused a marked rise in its content of Ca, Fe, Na, K, Zn, Mg and Mn levels, CN 0% had the lowest concentration of all minerals, and had lower values of vitamins A, E and D but CN 6% had higher values of vitamins A, E and D. Control Nuggets (CN 0%) had the lowest value of yellowness and highest value of lightness but CN 6% had the highest value of yellowness and, the lowest value of lightness. The redness had a slightly reduction. All samples showed slight changes in hardness, cohesiveness, springiness, gumminess and chewiness were noticed. An increase in WHC, pick-up, and cooking loss of chicken nuggets with dehydrated shellfish was noticed. Panelists accepted all prepared chicken nuggets and the chicken nuggets CN 4% had the highest score compared with other chicken nuggets prepared.

Wings of Dream Spread, Hearts Soar above Sea——Review on A Dream by the Sea

In any case, it shows that over thousands of hundreds of years, the inseparable connection between human beings and the sea has been generating enormous curiosity, yearning, romances and ardors. Even for someone who was brought

Wings 年轻的力量

半年前的钥匙球馆,在满场＂USA＂的喊声中,Wings让中国国旗飘扬到了最后。平均年龄还不到20岁的他们,是TI史上最年轻的冠军,同时也是最具统治力的冠军。在不到20岁青春年少的时光里,他们为了梦想改变了自己的生活轨迹,背负了捍卫中国DOTA荣耀的使命,并且他们也做到了。对于大多数人来说,年轻可能是希望,也可能是潇洒。

Wings经理江明柯:TI6夺冠,还是有点出乎意料

江明柯Wings俱乐部经理在2016年,他随队参加了国内外的各项比赛。这其中保罗一轮游的马尼拉特锦赛,也包括站上世界之巅的TI6。带队一年的时间,他心里感受颇深,如何评判Wings在2016年的表现,他比所有人都有资格。《电子竞技》：作为俱乐部的管理层,你见证了Wings在2016年的成长,这一年下来感受是怎样的？

Wings:梦幻般的2016

＂如果奇迹有颜色,那一定是中国红。＂在2016年的夏天,中国在两个团队项目中创造了奇迹,一个是中国女排,另一个是Wings。2016年里,Wings从一支默默无闻的年轻队伍,变成了站上世界之巅的＂护国神翼＂,在不到一年的时间里,他们完成了惊人的蜕变。这种蜕变,对于Wings自己来说,都是没有想到的。

晋级TI6,坐在过山车上的Wings

ESL ONE马尼拉站取得了队史的第一个冠军,Wings战队一战成名,为彼时颓靡的西恩DOTA注入了一针强心剂;而此后在福地马尼拉,Wings在春季赛直接受邀后,却在小组赛中即进入败者组,之后首轮便折戟回府;TI6预选赛,Wings拔得头筹,拿到中国第一张直通TI的门票。TS5、南洋杯、TI正赛,Wings,五个平均年龄20岁的小伙,还面临着更严峻的考验。