EXploration Space Suit
Advancing technology with cost-effective, reliable solutions
The EXploration Space Suit (EXS) was designed and developed by the C-SAFE team as part of NASA’s Constellation Space Suit System (CSSS) Program. Led by Oceaneering, this team of experts in specialized technologies related to life support and personal mobility in hazardous environments worked to engineer a suit to meet NASA’s stringent requirements.
The EXS is an effective, safe, affordable, and reliable space suit system with a sustainable architecture.
Enables easy donning and doffing
Provides improved fit for all crew members
Simplifies space operations
Improves comfort and agility
Reduces logistics requirements
EXploration Suit Development
To meet NASA’s requirements, we identified three key components and design areas:
The EXS pressure garment is a rear-entry suit that enables easy donning and doffing. Featuring an elliptical helmet with a permanent anti-fog coating, the EXS pressure garment operates at pressures from 4.3 psi to 8.3 psi.
The suit’s hybrid upper torso (HyUT) accommodates astronauts of various sizes, and is designed to maximize mobility by including enhanced shoulder joints. Customized sizing provides enhanced mobility and efficiency that reduces risks posed to working astronauts.
The Life Support
The EXS LSS includes state-of-the-art systems technology. Integrated oxygen tanks provide an eight hour nominal extravehicular activity (EVA) capacity and an extra hour of oxygen usable in the event of an emergency. A regenerable system removes carbon dioxide and humidity, while a suit water membrane evaporator (SWME) provides cooling.
The EXS LSS also features an advanced liquid thermal garment (LTG) that increases thermal and cooling comfort for the user. The LTG assists in regulating the wearer’s core temperature, enabling greater endurance in temperature extremes. We developed the LTG after more than 20 years developing similar garments for HazMat, firefighting, medical, aerospace, and diving applications.
Power, Communications, Avionics, and Informatics (PCAI)
The PCAI system provides redundancy and risk reduction with dual, independent power, and data buses with separate batteries. The suit's software-defined radio has S-band and UHF capabilities to support communications, data, and video transfers.
An astronaut can view up to eight lines of data on the system’s multi-page Suit Control Assembly (SCA). The PCAI system also provides the user with mission timeline, procedures, and suit data on an innovative suit display assembly.