The draft interoperability standards include seven discipline areas
The draft standards provided here have been collaboratively prepared with the goal of defining interfaces and environments to facilitate cooperative deep space exploration endeavors. These draft standards focus on topics prioritized in this early phase of exploration planning and are not intended to dictate design features beyond the interfaces. By providing the draft standards here, we hope to engage the wide-ranging global spaceflight industry, and encourage feedback on the standards from all potential stakeholder audiences.
The Avionics standard provides basic common design parameters that allow developers to independently design compatible Avionics systems. Specifies data link protocols and physical layer options that may be used to architect the interfaces between both spacecraft subsystems and vehicles themselves.
The Communications standard defines the functional, interface and performance standards necessary to support interoperable and compatible communications between spacecraft, ground infrastructure, other space and surface vehicles.
Environmental Control and Life Support Systems (ECLSS):
The ECLSS standard provides basic common design performance parameters to allow developers to independently develop compatible life support systems.
The Power standard defines bus voltage, power quality, and grounding approaches to ensure commonality, reliability, interchangeability, and interoperability for electrical load applications between space application power systems.
The Rendezvous standard provides basic common design parameters to allow developers to independently design compatible rendezvous operations.
The Robotics standard provides a set of common design parameters to allow module, visiting vehicle, and on-orbit relocatable or replaceable unit providers to design robotic system compatible elements.
The Thermal standard documents fluids to be employed in active external and internal coolant loops, and requirements for coldplates that interface directly to those coolant loops.