A wing-design study has been conducted on a 65 swept leading-edge delta wing in which the wing geometry was modi ed to take advantage of the naturally occurring ow that forms over a slender wing in a supersonic ow eld. Three-dimensional nonlinear analysis methods were used in the study which was divided into three parts|preliminary design, initial design, and nal design. In the preliminary desi...

Based on flat ground assumption, a correhtion method is &veloprd to estimate orientation of vehicle relative to its run ning environment. A weight finclion U introduced to account for figure varirrtion caused by 3D dynamic scene and perspective efect caused by the camera system. The estimated parameters can be qualitatively wed in visual navigation. Promising results indicate that robust esthat...

The aim of this paper is to provide an aeroelastic computational tool which determines the induced wing loads during flapping flight. For this purpose, a Finite Element (FE) code based on a four-node plate bending element formulation is developed to simulate the aeroelastic behavior of flapping wings in low incompressible flow. A quasi-steady aerodynamic model is incorporated into the aeroelast...

the carob moth, ectomyelois ceratoniae (zeller), belongs to the family pyralidae and the subfamily phycitinae. in spite of some features of sexual dimorphism in size and shape in the order lepidoptera and the mentioned family, it has not been recorded in this species. in the current study, sexual dimorphism in the wing shape and size of carob moth on four hosts (pomegranate, fig, pistachio and ...

Aerodynamic force generation and mechanical power requirements of a dragonfly (Aeschna juncea) in hovering flight are studied. The method of numerically solving the Navier-Stokes equations in moving overset grids is used. When the midstroke angles of attack in the downstroke and the upstroke are set to 52 degrees and 8 degrees, respectively (these values are close to those observed), the mean v...

Extensive wind tunnel tests are conducted to evaluate surface pressure distribution of a semi span swept wing. The wing section has a laminar flow airfoil similar to NACA 6-series airfoils. The investigations are conducted at various speeds and angles of attack. Surface pressure distribution over the wing upper surface is measured for both chordwise and spanwise sections. Statistical analyses a...

Flying is an ecologically important behaviour in many insects, but it often results in permanent wing damage. Although wing wear in insects is often used as a method to determine insect age, and is associated with an increased risk of mortality, the causes of wing wear are unresolved. In this paper, we examine whether wing use while foraging explains wing wear in bumble bees (Bombus spp.). Wing...

Let (x, y, z) be a rectangular coordinate system, with +x in the direction of the undisturbed freestream flow velocity, +y normal to the plane of the thin wing, and z in the direction of the " span " of the wing. The wing is located on the y = 0 plane, " centered " at z = 0. We are given a large aspect ratio wing with the following information: Planform of the wing is described by c(z), the cho...

The data presented in this article relates to the research article, "Evidence of Varroa-mediated Deformed Wing virus spillover in Hawaii" (Santamaria et al., 2017) [3]. The article presents data collected throughout August 2014 to November 2015, on the two Hawaiian Islands of Oahu and Maui. Apis and non-Apis specimens - a total of four species - were collected and tested for Deformed Wing virus...

--To test the hypothesis that wing molt causes nutritional stress for geese and ducks, I investigated what effect wing molt has on nutrient reserves of adult Lesser Snow Geese (Chen caerulescens caerulescens). The study was done in 1971 and 1972 at the McConnell River (60ø50'N, 94ø25'W), Northwest Territories, Canada. Body weight, weight of body fat, dry weight of breast and leg muscle, and leg...