A Crew Life Support System for the Single Stage to Orbit Space Ship

This paper describes a life support and EVA system for an SSTO that will have minimum mass impact on spaceship design while permitting full in-flight functionality, ready EVA, adequate back-up in emergencies and simplified maintenance and checkout.

The system premises a single crewmember, continuously suited operations, limited on-orbit stay, an unpressurized cabin and EVA without need for an airlock.

Conceptual drawing and mass estimate are provided.