This book presents select peer reviewed proceedings of the International Conference on Design and Engineering of Lighter-Than-Air Systems (DELTAs 2022) which was held at the Department of Aerospace Engineering, Indian Institute of Technology (IIT) Bombay. It highlights current research trends and advancements in the field of lighter-than-air (LTA) systems. The topics covered include design (conventional and unconventional), aerodynamics (CFD), structures, loads and materials, stability and control, operations and ground handling, multidisciplinary design optimization, and novel applications of LTA systems. The book will be a valuable reference for researchers and professionals interested in lighter-than-air systems and allied fields.

This book addresses the pertinent issues that will need to be considered by those interested in physical security problems of the future. Specifically, it examines how changes in the accessibility of technology – data, hardware, software – are likely to affect both threat and mitigation considerations for Chemical, Biological, Radiological and Explosive (CBRE) scenarios and how social science can inform us of the human aspects of each. The trend towards an ever more socio-technical society and infrastructures – encapsulated by concepts such as 'smart cities' – is drawn out as a key motivation for adopting more holistic risk approaches to such security problems, than is currently the case.