Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Composites skeletal systems

Considering an outline design as suggested by Little (2011), the collected electrical energy from solar collectors in Satellite 1 at GEO would be beamed to Earth by lasers onto Satellite 2 positioned some 20 km above the Earth. Satellite 2 would support the equipment to transform the laser to microwaves, which would be beamed to a ground receiver. Ideally, the structural system to support the collectors and equipment for Satellites 1 and 2 would be fabricated from a polymer/fibre composite skeletal structure however, it is the structural support system for Satellite 1 at GEO which this chapter has discussed. The two satellites in relationship to the sun and Earth are shown in Rg. 10.11. [Pg.416]

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. [Pg.729]

The siliceous skeletal system of the Western Pacific hexactineUid sponge, Euplectella aspergillum, is a complex hierarchically ordered composite (Weaver et al. 2007). The basic building blocks are laminated skeletal elements (spicules) that consist of a central proteinaceous axial filament surrounded by alternating concentric domains of consolidated silica nanoparticles and organic interlayers (adhesive). This animal also shows an interesting... [Pg.1396]

For the convenience of this discussion, a somewhat arbitrary demarcation was drawn between state-of-the-art (SOA) and novel electrolyte systems, with the former referring to the ones currently used in commercialized lithium ion cells and the latter to the ones improved over the SOA systems but still under development. It should be pointed out that the exact electrolyte compositions in commercialized devices are usually proprietary knowledge, but publications from the affiliated researchers normally disclose sufficient information to reveal the skeletal electrolyte components employed. The distinction made in this review concerning the previously mentioned demarcation is based on such open literature. [Pg.67]

Another series of cubic clusters of general composition M9(/.i4-E)6Lg (M = Ni or Pd E = Ge, P, As, Te) incorporates a metal atom in the center of the cube. The bonding in these cluster compounds is also analyzed by means of EH and SCF-MS-Xa calculations. The number of MVE ranges from 130 to 121. Examination of the electronic structures has shown that the cluster compounds are at the interface between molecular and solid state materials. In the cubic clusters, closed-shell electron configurations of stable molecular systems with a significant HOMO-LUMO gap coexist with open-shell electron configurations of solid-state systems with no significant gap between the skeletal frontier orbitals. [Pg.1488]

The asynchronous way of a-oxide splitting is observed only when the arising cation centre is stabilized by a- or -participation The direction of the skeletal shift in such systems is determined only by the configuration of the breaking bond and does not depend on the structure of the syn-located bridge this factor, however, exerts an essential influence on the composition of the reaction products which also depends on the nature of the acid and on the reaction conditions. In all these rearrangements no products of homo-allylic conjugation with the double C —C bond are formed. [Pg.152]

The need for substituent constants of groups for which experimentally determined values are unavailable continually recurs. To supply this need methods of estimation of substituent constants are required. The first successful attempt to estimate substituent constants is due to Charton (50). The basis of this method is that a data set with substituents of the type ZW, where Z is variable and W is constant, can be treated in two equivalent ways. The system has the form ZWGY. The substituent can be taken to be Z, and the skeletal group to be WG or, the substituent can be assumed to be ZW, and the skeletal group to be G. In that case, let the composite substituent constant, ot,zw represent the effect of the ZW group, and the composite substituent constant, Hammett equation, some quantity Q which is to be correlated is given by. [Pg.225]

Composite materials/fabrication techniques for deployable skeletal support systems for earth-based solar panel (EBSP) generators... [Pg.403]

Chapter 20, Section 20.7.3, will discuss the unit building block manufactured in advanced polymer composites and the deployment mechanism by stored potential energy for the skeletal structure. Figure 20.4 of Chapter 20 illustrates the unit building block backing frame of a nine-cluster node point of 21 tubular members. Hollaway and York (1995) have discussed a suitable deployment system. [Pg.730]


See other pages where Composites skeletal systems is mentioned: [Pg.37]    [Pg.37]    [Pg.145]    [Pg.382]    [Pg.273]    [Pg.320]    [Pg.403]    [Pg.768]    [Pg.414]    [Pg.403]    [Pg.104]    [Pg.18]    [Pg.152]    [Pg.401]    [Pg.261]    [Pg.37]    [Pg.175]    [Pg.167]    [Pg.345]    [Pg.90]    [Pg.26]    [Pg.797]    [Pg.149]    [Pg.2580]    [Pg.2652]    [Pg.200]    [Pg.305]    [Pg.479]    [Pg.256]    [Pg.58]    [Pg.58]    [Pg.385]    [Pg.1466]    [Pg.429]    [Pg.293]    [Pg.398]    [Pg.399]    [Pg.404]    [Pg.730]    [Pg.763]   
See also in sourсe #XX -- [ Pg.37 ]




SEARCH



Skeletal system

© 2024 chempedia.info