"The MAAT project aims to investigate aerial transportation possibility by airship based cruiser-feeder system. MAAT is composed by tree modules :- the cruiser, named PTAH, (acronym of Photovoltaic Transport Aerial High altitude system);- the feeder, named ATEN (Aerial Transport Elevator Network feeder), is a VTOL system (Vertical Take Off and Landing) which ensure the connection between the cruiser and the ground;- the vertical airport hub, named AHA (Airport Hub for Airship feeders).The feeder can lift up and down by the control of buoyancy force and displace horizontally to join to cruiser.The project aims to:1. identify and design the best type of propulsion for the PTAH, a discoid innovative airship able to remain airborne for long periods and to travel great distances, in order to reduce the environmental impact against the present sys-tem, as fuel consumption is null, both cruiser and feeder are energetically autonomous by photovoltaic energy and innovative electric propulsion.2. study the different possible ways of approaching and joining between ATEN and PTAH, and consequently, the re-lease of ATEN from PTAH.3. design the best procedure of docking operations thus identified in order to obtain the minimum disruption to pas-sengers and the maximum safety for themselves and for goods4. study the different architectures of PTAH and Athens, in such a way that :5. the lift up capacity guaranteed by the buoyancy force, may be accompanied by the power of the engines;6. effective and safe procedures for docking;7. ATEN can land and take off from Airport Hubs named AHA located in major populated centres8. PTAH satisfies the better possible aerodynamic performances possible for the dimensions and the operative mis-sion.To study the transfer operations between ATEN and PTAH of goods and people and vice versa, to:• minimize distress conditions for passengers,• maximize performances especially for goods;• enhance safety of these operations to maximum possible level.The objectives described are congruent with each other and to achieve this the study of the system and components must be highly structured."