The Boeing Company

Peter H Colebrook

Mithra M K V Sankrithi

Kelly L Boren

Cameron Lindsay Carnegie

Alan A Clifton

Robert H Denkmann

Jamil A Razzak

Aircraft that have fuselages including a series of frames spaced apart according to a frame pitch. The series of frames are covered by an aircraft skin to define an interior volume of the aircraft. The interior volume contains a series of rows of seats separated according to a seat pitch. The seat pitch may be indexed to the frame pitch such that seats are located between adjacent ones of the series of frames to permit a reduced-perimeter aircraft fuselage with substantially equal passenger comfort metrics. In some embodiments, in addition, a series of windows are located adjacent outboard seats of the series of rows of seats to permit ergonomically appropriate viewing through the series of windows by passengers seated in the outboard seats.

Reduced-perimeter aircraft

An aircraft toilet system includes a holding tank and a discharge pipe which extends to a service panel located near the skin of the aircraft. A poppet valve is located near the outlet end of the discharge pipe. Leakage of fluids past the poppet valve is corrected in a first embodiment by pressurized cabin air which is ported to a downstream side of the poppet valve and by venting the upstream side of the valve to the atmosphere. In a second embodiment, high pressure air from the aircraft's environment control system is ported to the downstream side of the valve. The resulting pressure differential holds the valve against its seat, and prevents fluid leakage in the event of a damaged valve seal.

Apparatus and methods for sealing a leaking toilet tank valve

Growing community of inventors

Bainbridge Is., WA, United States of America

Peter H Colebrook