Using 3D photogrammetry to monitor a simplex tensegrity structure's Assignment

Using 3D photogrammetry to monitor a simplex tensegrity structure's deformation - Assignment Example The example dwells on a mesh reflector. The mesh reflector is extensively used for apertures space aerial systems that are large due to their light weight and are packed easily and compactly. The reflector’s radio frequency exterior comprises of a mesh with reflective faces. It is bound from interlaced thin wires that are electrically conductive. This wires are made from molybdenum that are gold plated having diameters of 0.03mm. The mesh is extended over a net of cable that is made of composite filaments that are stiff and unidirectional, glued to a structure. The reflective exterior comprises of elements that due to their flexibility can be folded with ease. The accuracy mostly lies on the cable net’s shape. There are two major conceptual designs that can be spotted. The first design is based on partition of parabolic exterior in gores that get support from radial cables or radial ribs glued to an external ring. The second design is takes into consideration a separation of surfaces in facets that are flat formed by cable net tensioned using forces that are applied at each junction node. The concept has been borrowed from Miura who developed the concept of tension truss. Many large antennas that use this concept of tension truss have been launched and tested for instance Astromesh reflector and space radio telescope. The same concept has also been studied by a man called Tibert. He used the concept in designing an antenna that was based on tensegrity structure (Tibert 2002). Tension that is fairly uniform and isotropic in a reflective mesh makes sure that there is a good conductivity of electricity and RF reflectivity. The tension of the mesh should be adequate to withhold lateral accelerations that are greater than the ones having experience in orbit with no harsh distortion of the surface of the reflector. Tensions of mesh from 5N/m have been frequently used. Higher tension often