"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  ...