Flexible continuum structure

Currently, there are two techniques for placing large backing frames in space to support collectors and equipment it is suggested that these are manufactured from polymer composite material systems as (1) a rigid deployable skeletal system, (2) an inflatable and flexible continuum structure. 

Inflatable and flexible continuum structure. The unit elements of the inflatable continuum structure would be stowed into a minimum volume in the cargo bay of the space transporter, launched and deployed at LEO. The various unit elements would be inflated and joined by EVA. Any equipment required would be connected at LEO and the whole would be transported to geostationary orbit. The system is described in Chapter 20, Section 20.7.4. 

The two types of support structures for the solar collectors and equipment that will be considered are the rigid deployable skeletal (RDS) structure and the rigidised inflatable flexible continuum (RIFC) structure both types of structure need to be lightweight and rigid and, in the case of the skeletal structure, high modulus composite materials would be used. In addition, the structures must be able to be folded to a minimum volume to be placed in the cargo bay of the Launch Vehicle, launched and deployed at LEO, and then taken to GEO by space tug,Wingo (2004). 

Rigidised inflatable flexible continuum (RIFC) support structure for solar collectors and... 

Rigidised inflatable flexible continuum support structure for the solar collectors... 

The field of theoretical molecular sciences ranges from fundamental physical questions relevant to the molecular concept, through the statics and dynamics of isolated molecules, aggregates and materials, molecular properties and interactions, and the role of molecules in the biological sciences. Therefore, it involves the physical basis for geometric and electronic structure, states of aggregation, physical and chemical transformations, thermodynamic and kinetic properties, as well as unusual properties such as extreme flexibility or strong relativistic or quantum-field effects, extreme conditions such as intense radiation fields or interaction with the continuum, and the specificity ofbiochemical reactions. 

The halogenation reaction of ethylene has been modeled by many researchers [170, 172-176], For chlorination in apolar solvents (or in the gas phase), the formation of two radical species requires the use of flexible CASSCF and MRCI electronic structure methods, and such calculations have been reported by Kurosaki [172], In aqueous solution, Kurosaki has used a mixed discrete-continuum model to show that the reaction proceeds through an ionic mechanism [174], The bromination reaction has also received attention [169,170], However, only very recently was a reliable theoretical study of the ionic transition state using PCM/MP2 liquid-phase optimization reported by Cammi et al. [176], These authors calculated that the free energy of activation for the ionic bromination of the ethylene in aqueous solution is 8.2 kcalmol-1, in good agreement with the experimental value of 10 kcalmol-1. 

The great flexibility of the trigonal bipyramidal skeleton displayed in the structures of many cyclic oxyphosphoranes suggests that the Berry pseudorotation mechanism may be an oversimplified representation for the permutational isomerisation of such species. Theoretical calculations and statistical considerations combined with these studies lead to the conclusion that this isomerisation may take place by a continuum of different routes (including turnstile rotation pathways) over a broad relatively flat potential surface, which have similar energy barriers. The Berry pseudorotation will, however, represent the energetically most favourable pathway for acyclic derivatives. 

Keywords All-atom. Basis sets Continuum models Coulombic interaction Dispersion. Dispersion effects Downscaling of charges Electronic structure methods. Fully-flexible Polarizable models Reduced charges Simulation time. Structure. Transferability United atom... 

---