Weapon Open System Architecture (WOSA)
The Weapon Open System Architecture (WOSA) is the premier government-owned architecture for next-generation smart weapons. It defines the high-level roadmap and design guidance to ensure that mission-critical armament systems are truly modular, vendor-agnostic, and rapidly upgradable at the speed of software.
WOSA serves as the overarching integrator for the weapons ecosystem, providing the framework within which specific interface standards like UAI and CFWI operate. By defining clear abstractions between the guidance software, airframe, and sensor payloads, WOSA enables a “Plug-and-Play” model for modern lethality.
The WOSA standard is not available at this time. Please check back for updates.
Overview
At its core, WOSA defines a reference architecture that emphasizes loose coupling, standardized data exchanges, and hierarchical compliance. Key elements include:
- Weapon Packages — Composed of guidance systems, propulsion, payloads, and seekers
- Generic High-Level Interfaces — Standardized via the WOSA messaging and data model
- Rapid Integration — Drastically reducing the time and cost required to field new munitions on existing platforms
Why WOSA?
WOSA is designed to accelerate lethality modernization while reducing lifecycle costs across the weapons enterprise.
Enhanced Lethality
Rapid technological refreshes keep pace with evolving threats.
Reduced Lifecycle Costs
Modular design lowers sustainment and acquisition expenses.
Fosters Innovation
A non-proprietary architecture empowers a diverse vendor marketplace.
Interface Standards
WOSA coordinates two key interface standards that define the physical and logical connection between platforms and weapons.
Universal Armament Interface (UAI)
The Universal Armament Interface (UAI) standard remains the cornerstone of weapon-to-platform digital handshakes. Primarily designed for air-to-ground use cases, it establishes a common, non-proprietary interface to enable the integration of smart munitions across various Air Force and Navy aircraft.
UAI eliminates the need for unique platform-to-weapon integration cycles, drastically reducing the cost and schedule for fielding new lethality.
The UAI standard is not available at this time. Please check back for updates.
Common Flexible Weapons Interface (CFWI)
The Common Flexible Weapons Interface (CFWI) provides a modern, high-speed interface for highly modular munitions. Building on established protocols, it adds support for air-to-air capabilities to enable the full spectrum of modern aerial engagements.
While UAI handles the traditional digital integration of smart weapons, CFWI provides the flexible protocol layer needed for multi-effect munitions, sensor-equipped carriages, and rapid software-defined payload reconfigurations.
The CFWI standard is not available at this time. Please check back for updates.