Aircraft lavatory and galley separated by an internal wall having an intermediate notch that improves the lavatory environment

An aircraft comprising:

• an aircraft body containing an aircraft cabin, the aircraft cabin having a longitudinal length between a front of the cabin and a rear of the cabin, the aircraft cabin having a lateral width between opposite first and second interior sidewalls of the aircraft body, the first and second interior sidewalls extending upwardly and curving laterally toward each other to a roof of the aircraft cabin, and the aircraft cabin having a flat rear bulkhead wall that extends laterally across the rear of the aircraft cabin between the first and second interior sidewalls of the aircraft body;
• a floor surface in the aircraft cabin;
• an internal wall in the aircraft cabin, the internal wall being laterally spaced from the first interior sidewall of the aircraft body and defining a lavatory containing a toilet laterally between the internal wall and the first interior sidewall, the lavatory including a front wall as part of an enclosure of the lavatory, the front wall having a doorway and a door secured to the front wall that can be manually operated to selectively open and close the doorway, the internal wall extending longitudinally through the aircraft cabin and having a lower section, an intermediate section and an upper section that are interconnected, the lower section extending vertically upwardly from the floor surface to the intermediate section, the intermediate section extending horizontally from the lower section and laterally away from the first interior sidewall of the aircraft body to the upper section, and the upper section extending vertically upwardly from the intermediate section to the roof of the aircraft cabin whereby the intermediate section and the upper section form a notch with additional area to the lavatory, the lower section, the intermediate section and the upper section each extending longitudinally through the aircraft cabin from the lavatory enclosure front wall to the rear bulkhead wall;
• and,
• the aircraft body first internal sidewall, the aircraft rear bulkhead wall, the lavatory front wall and the internal wall all forming an enclosure of the lavatory.

A method of increasing passenger seating of an aircraft, the method comprising:

• providing the aircraft with an aircraft cabin having a longitudinal length between a front of the aircraft cabin and a rear of the aircraft cabin and having a lateral width between a first outboard sidewall of the aircraft cabin and a second outboard sidewall of the aircraft cabin;
• extending the first and second interior sidewalls upwardly and curving the first and second interior sidewalls laterally toward each other to form a roof of the aircraft cabin;
• providing an aft pressure bulkhead (APB) wall at the rear of the aircraft cabin extending laterally between the first and second interior sidewalls;
• positioning a lavatory in the aircraft cabin adjacent a storage area at the rear of the aircraft cabin where the lavatory is not positioned along a longitudinal aisle of the aircraft cabin and is not occupying cabin space along the longitudinal aisle;
• positioning the lavatory in the aircraft cabin between the stowage area and the first interior sidewall of the aircraft cabin, providing the lavatory with an enclosure including a front wall, the front wall having a doorway and a door secured to the front wall that can be manually operated to selectively open and close the doorway;
• substantially conforming the aircraft body first interior sidewall to an outboard portion of the enclosure of the lavatory;
• substantially conforming the aft pressure bulkhead to an aft portion of the enclosure of the lavatory;
• providing an inboard wall portion of the enclosure of the lavatory between the lavatory and the stowage area serving to separate the lavatory and the stowage area, the inboard wall portion having a lower section, an intermediate section and an upper section that are all interconnected, the lower section extending vertically upwardly from the floor surface between a lower area of the lavatory and a lower area of the stowage area to the intermediate section, the intermediate section extending horizontally over the lower area of the stowage area from the lower section to the upper section, the upper section extending vertically upwardly from the intermediate section between an upper area of the lavatory and an upper area of the stowage area to a roof of the lavatory, whereby a lateral width dimension of the lavatory above the intermediate section is larger than a largest lateral width dimension of the lavatory below the intermediate section;
• adding passenger seating to the cabin space along the central longitudinal aisle where the lavatory is not positioned.

An aircraft comprising:

• an aircraft body containing an aircraft cabin, the aircraft cabin having a longitudinal length between a front of the cabin and a rear of the cabin, and the aircraft cabin having a lateral width between opposite first and second interior sidewalls of the aircraft body, the first and second interior sidewalls extending upwardly and curving laterally toward each other to a roof of the aircraft cabin;
• a floor surface in the aircraft cabin;
• a stowage space in the aircraft cabin;
• a lavatory in the aircraft cabin, the lavatory being positioned in an area available between the stowage space and the first interior sidewall of the aircraft body, the lavatory including a front wall as part of an enclosure of the lavatory, the front wall having a doorway and a door secured to the front wall that can be manually operated to selectively open and close the doorway;
• a fuselage crowned surface of the aircraft having increased height in a region of the front wall of the lavatory as compared to a height of the fuselage crowned surface in a region of the rear of the lavatory;
• a lavatory ceiling spaced from the fuselage crowned surface such that the lavatory ceiling has increased standing height in the region of the front wall of the lavatory as compared to standing height in the region of the rear of the lavatory;
• the aircraft body first interior sidewall being located outboard of the lavatory;
• an aircraft aft pressure bulkhead substantially located aft of the lavatory;
• and,
• an inboard wall portion of the enclosure of the lavatory serving to separate the lavatory and the stowage space, the inboard wall portion having a lower section, an intermediate section and an upper section that are all interconnected, the lower section extending vertically upwardly from the floor surface between a lower area of the lavatory and a lower area of the stowage space to the intermediate section, the intermediate section extending horizontally over the lower area of the stowage space from the lower section to the upper section, and the upper section extending vertically upwardly from the intermediate section between an upper area of the lavatory and an upper area of the stowage space to a roof of the lavatory, whereby a lateral width dimension of the lavatory above the intermediate section is larger than a largest lateral width dimension of the lavatory below the intermediate section.