Pressure Helmet Assembly
(Bubble helmet)
Jim Lovell in his bubble helmet before Apollo 13 launch | Diagram showing structure of helmet and head rest | Helmet structures | Helmet structures | A7LB Neck ring assembly for CMP (top) and CDR/LMP (bottom) |
Left image courtesy Kipp Teague’s Project Apollo Archive
Left-Front-Right-Rear-Bottom views
Note center image shows white circular feed port. Fourth image shows back of head rest, which acted as a manifold to route oxygen around inside the helmet.