Showing papers by "Vaughn College of Aeronautics and Technology published in 1995"
TL;DR: In this article, the authors examined the overall flexural buckling control of composite column strips using piezoceramic actuators and showed that by applying a controlled voltage to the actuators, a reactive moment will be induced at the column centre thereby removing the lateral deflections and enforcing the column to behave in a perfectly straight manner.
122 citations
TL;DR: In this paper, the influence of cutout diameter, reinforcement lay up and thickness on the buckling stability of square CFRP panels was investigated using NASTRAN Finite Element Analysis (FEA).
37 citations
TL;DR: In this paper, the warping and St Venant torsional stiffnesses of composite Z and channel sections are determined using equivalent engineering elastic constants of the composite material which correspond to the membrane and bending modes of action respectively.
22 citations
TL;DR: In this paper, the authors identify some of the parameters which determine the upstream extent and the lateral spreading of the separation front around an underexpanded transverse jet on a slender blunted cone.
Abstract: The present study aims to identify some of the parameters which determine the upstream extent and the lateral spreading of the separation front around an under-expanded transverse jet on a slender blunted cone. The tests were conducted in the Cranfield hypersonic facility at
$M_\infty = 8.2$
,
$Re_\infty /{\rm cm} = 4.5$
to
$9.0 \times 10^4$
and at
$M_\infty = 12.3$
,
$Re_\infty /{\rm cm} = 3.3 \times 10^4$
. Air was used as the working gas for both the freestream and the jet. Schlieren pictures were used for the visualisation of the three-dimensional structures around the jet. Pressure, normal force and pitching moment measurements were conducted to quantitatively study the interaction region and its effects on the vehicle. An analytical algorithm has been developed to predict the shape of the separation front around the body.
19 citations
TL;DR: In this article, the authors discuss the role of the European Single Market in air transport, and the regulatory distinction between the two modes of the air transport industry, and present a variety of strategies to cope with the increasingly competitive air transportation industry, including vertical and horizontal integration, product development and cost control.
8 citations