Calendar: 1966-1967 Page 415

xc Annual Report of the Delegacy presented paper Professor Ross acted as chairman for one of the sessions of the conference The research programme of the Electrical Engineering department included an investigation of tooth ripple phenomena in machines and the experimental resources of the undergraduate laboratories was in- creased by the acquisition of two generalised machine sets In the electronics field the range of research was extended by the initiation of two projects one concerned with high-frequency plasma and the other with radiation damage in single crystals of metal by energetic noble gas ions Dr Lindsay appointed at the beginning of the session has brought to the department specialist knowledge of certain branches of electronics derived from long experience of industrial research In the Mechanical Engineering department work continued on studies of induction phenomena and on velocity measurements in engine cylinders and additional apparatus was constructed to enable velocity measurements to be made above moving piston The in- fluence of trumpet-shaped induction pipes on improving inlet-port flow is also being investigated Research on the behaviour of centripetal gas turbine under pulsating flow conditions was begun This work which is related to the design of exhaust-gas turbo-charging systems is being carried out with the co-operation of Ltd Noise studies on small-diameter high-velocity jets are being extended to cover certain aspects of reciprocating-engine exhaust noise Assis- tance from the in carrying out comparative studies on jets of large diameter is gratefully acknowledged In the field of refrigeration the work on two-phase flow is proceed- ing and interesting results are emerging from the experimental studies The work on calorimetry is also continuing In the metallurgy labora- tory progress was made in the programme of determining liquid metal properties and further work was done on dental amalgams The existing post-graduate course in Powder Technology was approved by the University as course leading to the award of the Sc degree after one year's study In the field of Powder Techno- logy work continued in the development of statistical theory of comminution Investigation into the physical and chemical changes which occur during milling is also progressing as is further work into the penetration of granular materials by bodies of various shapes and into discharge from bins and hoppers New post-graduate courses in Internal Combustion Engineering and