Abstract: A substantially insoluble compound having a polysaccharide backbone which is derivatised at one or more of its hydroxyl groups with a ligand (L) bound to the sugar moiety by a sulphur atom which may be tailored according to a wide range of applications. The compound is useful as a catalyst and in removal of contaminants from a feed containing particularly metal ions.

Abstract: A substantially insoluble compound having a polysaccharide backbone which is derivatised at one or more of its hydroxyl groups with a ligand (L) bound to the sugar moiety by a sulphur atom which may be tailored according to a wide range of applications. The compound is useful as a catalyst and in removal of contaminants from a feed containing particularly metal ions.

Abstract: A vehicle simulator is disclosed in which a first motion platform is driven in translation and rotation from a datum position. A simulator user station is positioned on the first motion platform, the user station defining a predetermined eyepoint position and a predetermined field of view from the eyepoint position relative to the user station. A display surface is mounted on a second motion platform so as to lie within the field of view, and the second motion platform is driven to maintain a predetermined positional relationship between the eyepoint position and the display surface. An image is projected to be viewed from the eyepoint position via the display surface.

Abstract: An optic fibre is wound around a drum and a strip of flexible adhesive is plied across the width of the winding to maintain the relative positions of individual turns of the winding. The fibre turns and adhesive are then cut across the width of the winding and the resultant ribbon is unwrapped from the drum. One end face of the adhesive in which the cut ends of the fibres are secured is then cut such that the axes of the fibres assume a predetermined orientation relative to the cut end face. The cut end face is then applied against the surface of a former of predetermined shape and the fibre ends are secured in the positions they have assumed. A radial fibre arrangement is obtained by cutting the end face normal to the fibres and using a cylindrical former.

Abstract: The invention provides head-coupled area-of-interest visual display apparatus particularly for ground-based craft-flight simulators. The apparatus provides a display projected onto the inside of a part-spherical shell which surrounds the pilot and carries a retro-reflective screen. The displayed scene covers an area of interest dependent upon craft position and heading and viewer's instantaneous line of view. The image generator may be of the computer generated image, laser-scanned model or closed-circuit television type. Multiple images are required for stereoscopic viewing or for more than one viewer. Line scanning apparatus is cockpit-mounted; line image is transmitted by fibre optic light guide ribbon and frame scan apparatus is mounted on a helmet worn by the viewer. A sensor measures head/helmet movement to permit voluntary scanning of a wide angle simulated view from the craft. The projected image is divided into zones each zone using separate line-scanning means and fibre optic light guide.