Terra Drone Terra B1

History

The Terra Drone Terra B1 is a Japanese interceptor unmanned aircraft developed for counter-UAS missions. Japan's Acquisition, Technology & Logistics Agency selected the aircraft through its rapid acquisition program for interceptor drones.

Terra Drone reported that the Terra B1 was the only aircraft to pass the agency's demonstration test among the systems evaluated. The result advanced the aircraft toward mass production and procurement for Japan's defense requirements.

In August 2026, ATLA moved forward with Terra Drone for production of the Terra B1. The program is intended to provide a rapidly deployable means of countering long-range one-way attack unmanned aircraft, including Shahed-type systems.

Selection and demonstration

According to UAS Weekly, Terra B1 was selected on July 15, 2026 for demonstration testing under ATLA's Interceptor Drone Early Acquisition Program. Terra Drone stated that its proposal had previously been selected from submissions by 38 companies.

The demonstration was conducted from late July through early August 2026. Terra Drone said the Terra B1 alone passed the demonstration stage. A separate report by The Defense Post stated that four aircraft models were evaluated and that Terra B1 was the sole system to advance to manufacturing.

The evaluation covered more than basic flight performance. Reported criteria included effective range, flight duration, flight distance, maximum speed, cruising speed, guidance method, the number of aircraft controlled simultaneously, launch and recovery methods, integration with other systems, safety measures, operational experience, and the time required between contract signing and delivery. Published source material does not provide numerical values for these characteristics.

Production program

ATLA's published schedule called for a mass procurement contract in late August 2026 and delivery around September 2026. Terra Drone subsequently announced that the aircraft had progressed toward mass production, while the August 25 report stated that ATLA had signed a mass-production contract with the company.

Terra Drone plans to establish domestic production and procurement systems in Japan. Its stated preparations include strengthening supply chains for components, batteries, communications equipment and control equipment, as well as developing maintenance, replenishment and training support.

Design

Terra B1 is designed as an interceptor drone for counter-UAS missions against long-range loitering or one-way attack unmanned aircraft. The available sources identify Shahed-type drones as an example of the threat category the system is intended to address.

The program requirements indicate that Terra B1 is being evaluated as part of a broader operational system rather than only as an individual air vehicle. ATLA considered guidance, simultaneous control of multiple aircraft, launch and recovery, integration with other systems, safety and deployment requirements. The supplied sources do not disclose the aircraft's dimensions, mass, propulsion system, payload, numerical speed, endurance, range or interception mechanism.

Terra Drone has stated that production preparations include domestic sourcing and support for batteries, communications and control equipment. The company also plans integration for operations at bases, vessels and critical facilities.

Program status

As of August 2026, Terra B1 had passed ATLA's demonstration testing and had advanced into the mass-production and procurement phase. Delivery was scheduled around September 2026 under the rapid acquisition timetable described by Terra Drone.

Terra Drone said initial deployment was expected to begin with the Japan Maritime Self-Defense Force. The company also indicated that future configurations could be considered for requirements of the Air Self-Defense Force and Ground Self-Defense Force. These possible later applications are plans and do not establish those services as current operators.

Specifications (Terra B1)

General characteristics

• Type: Interceptor unmanned aircraft.
• Role: Counter-UAS interception of long-range loitering and one-way attack unmanned aircraft.
• Country of development: Japan.
• Manufacturer: Terra Drone Corporation.

Program requirements

• Guidance: Evaluated by ATLA; the specific guidance method is not disclosed in the supplied sources.
• Multi-aircraft control: The number of aircraft controlled simultaneously was an ATLA evaluation criterion; no numerical capability is disclosed.
• Launch and recovery: Assessed during the procurement program; the specific methods are not disclosed.
• System integration: Integration with other systems was included in the evaluation requirements.