DEFENDOR
Outstanding Performance for UCAV & OWE Mission Execution
LONG RANGE: ≥1000KM | HIGH SPEED: UP TO 650KM/H | HIGH PAYLOAD | LOW COST
The Quiet Force Behind Unmanned Air Superiority
Defendor is Rotron Aerospace’s next-generation uncrewed combat aerial vehicle (UCAV) and One Way Effect (OWE) platform – designed and built to deliver sovereign capability at scale.
At its core is the R250-FDS Fan Drive System, a breakthrough propulsion solution that provides exceptional efficiency, extended range, and unmatched SWaP-C performance. This allows Defendor to operate across demanding mission profiles while remaining cost-effective enough for high-volume deployment.
Purpose-built for strategic impact, Defendor offers:
- Extended operational reach – significantly longer range than comparable platforms, thanks to the efficiency of the R250-FDS.
- Scalable combat mass – designed for rapid production using non-complex supply chains, ensuring large numbers can be fielded quickly and affordably.
- Multi-role flexibility – suitable for strike missions, swarm tactics, or as part of layered air defence concepts.
- Sovereign assurance – fully designed, specified, and integrated within the UK, ensuring compliance with NDAA requirements and safeguarding supply chain security.
Defendor redefines the balance between cost and capability in UCAV and OWE design. By pairing a low logistical burden with advanced performance, it empowers armed forces to project credible combat air power at scale – closing the gap between tactical drones and expensive, traditional combat aircraft.
| Description | R250-FDS |
|---|---|
| Payload | Up to 100kg |
| Fan Diameter | 720mm / 28in |
| Length | 940mm / 37in |
| Weight | 65kg / 143lb |
| Thrust | 2,280N / 590lbf |
| Shaft Power Output | 120kW / 160HP |
| Fuel Consumption (75%) | 45ltr (60ltr max) per hour |
| Speed Range | 350 - 750kmh |
Advanced Engine Test Cell Facility
Rotron Aerospace’s state-of-the-art on site test facility, including 4 certified engine dynamometer and 150m³ hyperbaric test chamber, is the cornerstone of its commitment to innovation, quality, and performance assurance. Designed to rigorously evaluate engines and propulsion systems under real-world conditions – down to -30 degrees and up to 60,000ft altitude. The facility also includes a wide range of testing protocols including endurance, thermal, vibration, and performance validation. Equipped with advanced instrumentation and data acquisition systems, it enables precise measurement and analysis of engine behaviour across various operational scenarios.
Mature FADEC & Dual Redundant System Architecture
Rotron Aerospace’s MAA-certified FADEC (Full Authority Digital Engine Control) system is a highly advanced and dependable engine management solution, offering precise electronic control over all aspects of engine operation. At its core is an integrated governor control that automatically regulates engine RPM by adjusting fuel and throttle inputs in response to load conditions. This functionality is further enhanced by real-time stoichiometric combustion gas analysis, which continuously optimizes fuel efficiency. These features, combined with Rotron’s proprietary fuel delivery system ensure exceptional performance, operational efficiency, and safety across a wide range of demanding aerospace environments.
Download Defendor Information sheet
Download the Defendor brochure. Need more information?
