TAMESIS (Río). Mapas hidrográficos (1767). 1:4600

Título completado a partir del contenido del documentoEscala gráfica de 1 milla [= 35 cm]. Orientado con lis en rosa de treinta y dos vientosIndica sondas batimétricas, bancos y fondeaderosTítulo enmarcado en cartela decorada con motivos vegetales y alegórico

Unified modelling of aerospace systems: a bond graph approach

Systems Integration is widely accepted as the basis for improving the efficiency and performance of many engineering products. The aim is to build a unified optimised system not a collection of subsystems that are combined in some ad hoc manner. This moves traditional design boundaries and, in so doing, enables a structured evolution from an integrated system concept to an integrated system product. It is recognised that the inherent complexity cannot be handled effectively without mathematical modelling. The problem is not so much the large number of components but rather the very large number of functional interfaces that result. The costs involved are high and, if the claims of improved efficiency and performance are to be affordable (or even achievable), predictive modelling and analysis will play a major role in reducing risk. A modelling framework is required which can support integrated system development from concept through to certification. This means building a 'system' inside a computer and demonstrating the feasibility of an entire development cycle. The objective is to provide complete coverage of system functionality so as to gain confidence in the design before becoming locked into a full development programme with associated capital investment and contractual arrangements. With these points in mind the purpose of this thesis is threefold. First, to demonstrate the application of bond graphs as a unified modelling framework for aerospace systems. Second, to review the main principles involved with the modelling of engineering systems and to justify the selection of the bond graph notation as a suitable means of representing the power flow (i.e. the dynamics) of physical systems. Third, to present an exposition of the bond graph method and to evolve it into a versatile notation for integrated systems. The originality of the work is based on the recognition that systems integration is a relatively new field of interest without a mature body of academic literature or reported research. Apparently, there is no open literature on the modelling of complete air vehicles plus their embedded vehicle systems which deals with issues of integrated dynamics and control. To this end, bond graph concepts need to be developed and extended in new direction in order to facilitate an intuitive approach to the modelling of integrated systems

TAMESIS (Río). Mapas hidrográficos (1767). 1:105000

Fecha de publicación tomada de "Tooley's dictionary of Mapmakers", Tring, 1979, p. 166Escala gráfica de 10 millas [= 15,4 cm]. Orientado con lis en rosa de treinta y dos vientos prolongadosOrografía de perfil. Indica sondas batimétricas y bancos de arenaEn el margen inferior una tabla refleja los bancos, estrechos que tiene el río y una amplia leyenda informa cómo navegar por élTítulo enmarcado en cartela decorada con motivos alegóricos y vegetale

Cartas remitidas por Powles a Manuel María Mosquera

Cartas remitidas por John Diston Powles a Manuel María Mosquera relativas a invitaciones y notificaciones personales. Fechadas en Londres