Real-Time Coupling of Geographically Distributed Research Infrastructures: Taxonomy, Overview and Real-World Smart Grid Applications

Novel concepts enabling a resilient future power system and their subsequent experimental evaluation are experiencing a steadily growing challenge: large scale complexity and questionable scalability. The requirements on a research infrastructure (RI) to cope with the trends of such a dynamic system therefore grow in size, diversity and costs...

The implementation of the ship's control system for the Royal Navy single role minehunter

On the attitude control of earth satellites

The paper discusses several possible methods for the attitude control of satellites, and distinguishes between active, passive and semi-passive systems. Active control refers to the usual concept of an error-actuated feedback control system, where the attitude error (or some function of it) is sensed explicitly, and used to control a torque...

Structural weight estimations for novel configurations

The aims of structure weight estimation are discussed and a review is given of its development in this country during the last fifty years from the simplest of formulae to quite detailed methods. The limitations of formulae derived only from statistical analysis of actual aircraft structures are noted. For aircraft of novel configuration it is...

Weight prediction for wings of box construction

The need for thin wings of high torsional stiffness leads to the use of box construction, in which both bending strength and torsional stiffness are provided by a single structural box. This report gives a method by which the wing weight for four types of box construction can be predicted from data available in the project stage of a new design....

Prediction of fuselage and hull structure weight

This report presents a method for predicting fuselage structure weight from data available in the project stage of a new design. The weights of the main structural components are calculated separately, account being taken of the peculiarities of each particular aircraft. The graphs and formulae are developed from analysis of about fifty British...

Prediction of undercarriage weights

This report presents a simple but accurate method of predicting undercarriage weight from data which would be available in the early project stage of a new design. The method was evolved by analysis of the weights of main components of undercarriages for over fifty aircraft types and tracing the features which influence undercarriage weight.