PBS Aerospace has signed a long-term subcontract worth “several tens of millions of dollars” with Zone 5 Technologies Inc., an unmanned systems developer, to advance US military propulsion programs.
The partnership supports the domestic production of advanced turbojet engines, drawing on technologies developed by the company’s parent organization, PBS Group, headquartered in the Czech Republic.
Key products in PBS Aerospace’s portfolio include the PBS TJ40 turbojet, generating roughly 100 pounds (445 newtons) of thrust, and the PBS TJ80, which delivers up to 200 pounds (890 newtons).
The compact TJ40 measures 304 millimeters in length, 147 millimeters in diameter, and weighs approximately 3 kilograms. It is capable of operating at altitudes up to 9,000 meters and achieving speeds close to 988 kilometers per hour.
In comparison, the TJ80 spans 512 millimeters in length, 235 millimeters in diameter, and weighs 13 kilograms. It offers a service ceiling of 10,000 meters and can reach speeds of up to 1,111 kilometers per hour.
Both propulsion systems are tailored for seamless integration into missile systems and autonomous platforms where space constraints and performance efficiency are critical factors.
Strengthening US Manufacturing Footprint
This agreement comes after PBS Aerospace inaugurated its American headquarters in Roswell, Georgia, in September 2025. The expansion was supported by a $20 million investment from PBS Group owner William Didden to scale up production capabilities within the United States.
