Modular Open System Architecture

The Modular Open System Architecture (MOSA) approach is an integrated business and technology strategy which leverages standards to create freely coupled and easily severable modules for efficient systems development and support. MOSA’s foundation in modular design dictates the use of open standards, particularly in the form of widely accepted interfaces that are independent of specific vendors, which allow for connectivity and rapid reconfiguration between distinct elements of systems.

Open standards endeavor to create a greater synergy among participants, to foster an environment where all members can be winners and the contributions of the whole community can be greater than the sum of the individual organization’s contributions. A thriving open standard fosters a rich and diverse community built on a principled foundation that enables innovation and success. OAI endorses the Modern Paradigm for Standards which defines a proven set of five principles to guide open standards (Source: OpenStand):

  1. Respectful Coordination
  2. Adherence to Shared Principles
  3. Collective Empowerment
  4. Availability
  5. Voluntary Adoption

Open Standards are vital to creating a competitive ecosystem, in addition to realizing the primary benefits of MOSA sought after by organizations and governments (Source: ODASD):

  • Competition - open architecture with severable modules, allowing components to be openly competed
  • Technology Refresh - delivery of new capabilities or replacement technology without changing all components in the entire system
  • Innovation - operational flexibility to configure and reconfigure available assets to meet rapidly changing operational requirements
  • Cost Savings/Cost Avoidance - reuse of technology, modules, and/or components from any supplier across the acquisition life cycle
  • Interoperability - severable software and hardware modules to be changed independently

OAI’s modular, open system architecture approach enables a large variety of implementation for modeling and simulation. The system can accommodate various third party modules and tools or OAI-developed, specific modules to meet customers’ needs. We maintain our own proprietary set of physics-based environment models, both generic and specific spacecraft component models, and even driven simulation architecture to provide the best fidelity and value through our modular, open system. The architecture, which is a part of our tailored systems engineering approach, allows for us to successfully execute missions and programs with rapidly responsive needs.

Quick facts about MOSA:

  • Enables Rapid Prototyping
  • Allows for greater open-source development