US Patent 8991756 Small diameter pressure structure commercial aircraft crew rest

An aircraft crew rest station includes an overhead crew rest portion including a central deck portion, forward and aft bunk portions, and a central entry vestibule connected between a passenger seating area and the central deck portion. The forward and aft bunk portions include a plurality of adjacent partitioned individual sleeping berths configured in interfitting alternating trapezoid shapes to optimize spatial accommodation of body proportions of crew members in the available aircraft space. The central deck portion includes an emergency escape hatch, a fold-down jump seat, and a fold-down entry door that removably covers a stairway of the central entry vestibule.