Modular Open System Approach

Modular Open System Approach (MOSA) for Future Vertical Lift

Affordable, Dynamic System Solutions

Bell integrates the Modular Open System Approach (MOSA) with FLRAA and Bell 360 Invictus development to advance aircraft operations. Our Open Architecture Digital Backbone offers effective integration of currently fielded mission system equipment and paves the way for quick, cost-effective new technology integration.
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Easily Integrated and Adaptable

Our Open Architecture Digital Backbone offers cost-effective integration of currently fielded mission system equipment while readying the aircraft for future mission system upgrades. Developed upon MOSA principals, Bell's FVL aircraft will enable Army Aviation to achieve their objectives of adaptability, overmatch, commonality and total lifecycle affordability.


Costly requalification avoided through digital isolation of the mission systems from flight critical avionics.
Rapid technology insertion enabled by an open architecture, modular design. The system enables better interoperability and isolation of the Air Vehicle / Mission System for rapid, cost-effective upgrades upon mature open standards, such as FACE, HOST, SOSA and more.
Adaptability for Overmatch
Bell’s open architecture digital backbone ensures an adaptability, reconfigurable and interoperable weapon system has the right capability for the mission when needed.
Future Vertical Lift