Kratos and GE Aerospace Engine Wins U.S. Military Type Designation for JASSM, Laying Groundwork for Missile Propulsion

Kratos Defense and GE Aerospace said their GEK800 engine has cleared a key government milestone tied to the Joint Air-to-Surface Standoff Missile (JASSM), a U.S. Air Force program focused on longer-range, air-launched strike weapons.

The engine was granted U.S. military type designation F143-ZZ-100, a formal label used by the defense establishment to identify an item’s approved configuration for procurement and logistics. In parallel, the engine was also described as receiving an engineering and manufacturing development (EMD) contract award connected to the JASSM effort.

JASSM is designed to let aircraft strike targets from distances that reduce exposure to air defenses. In the program’s propulsion architecture, the GEK800 is being positioned as a second-source engine option. Second-source selection generally matters because it can expand supply capacity and reduce schedule risk, particularly for systems where long-lead materials and manufacturing throughput are critical.

The report characterizes the EMD award as advancing the missile program toward an engine family intended to deliver “small, low-cost, high-performance” propulsion for use in missiles and unmanned aircraft. That framing suggests the engine is intended not just for integration, but also for manufacturability and cost control, both of which influence how quickly an emerging weapon can move from prototype to operational production.

Kratos, which has a track record in defense electronics, unmanned systems, and missile-related technologies, is frequently involved in technology integration and mission systems. GE Aerospace, meanwhile, supplies aircraft and defense propulsion technologies and has been developing smaller, modular engines and related components for military platforms. Together, the combination points to a division of labor typical in missile supply chains, where the airframe and guidance workstreams integrate with specialized propulsion.

Sector-wise, the development underscores how propulsion suppliers are competing on more than raw thrust or performance. Programs like JASSM often require engineering discipline around reliability, maintainability, and the ability to ramp output while meeting strict government qualification standards. A formal type designation is one indicator that the government is treating the engine configuration as stable enough to support continued contracting and integration work.

Still, important details remain undisclosed in the available report. It does not provide the dollar value of the EMD contract, the precise scope of work, the production timeline, or whether the designation F143-ZZ-100 applies to the engine alone or to a broader configuration that includes accessories, control components, or integration hardware. It also does not spell out comparative performance versus other competing engines selected for the program.

What to watch next is whether the companies provide additional specifics, such as integration test milestones for JASSM, qualification milestones for the GEK800 configuration, and any later contract steps that transition from EMD toward production and sustainment. Program updates, including government acquisition documents or follow-on announcements, would likely clarify delivery schedules and the engine’s role in future JASSM variants.