Safe and Certifiable Flight Control for UAS
Flight Control Units (FCU) for Mission-Critical UAS Platforms
Safe and Certifiable Flight Control for UAS
Flight Control Units (FCU) for Mission-Critical UAS Platforms
Certifiable Autopilots and Flight Control Systems for UAS
PrimeCor designs and develops custom Flight Control Units (FCU) and Flight Control Systems (FCS) for UAS, focused on certification readiness, operational reliability, and true scalability across unmanned aerial platforms.
From lightweight UAS to heavy-lift aircraft platforms, our patented modular hardware and software architectures reduce technical risk, accelerate system integration, and deliver safe, flight-proven control systems validated in real operational environments.
Autopilots Engineered for Your Mission
We apply a systems engineering approach that reduces development time, project uncertainty, and ensures that every component of the flight control system in the aircraft meets rigorous performance, safety, and certification requirements.
Flight control system development phases
Technical analysis and engineering consultancy
Mission profile, concept of operations, UAS platform, and payload assessment to define the optimal system scope.
Requirements definition
Functional, safety, and certification requirements for the Flight Control System.
System design
Hardware and software architecture optimized for reliability and efficiency.
Algorithm development
Flight control, navigation, guidance, and mission management tailored to each platform and mission.
Integration, verification, and validation
Continuous support as an extension of the customer’s engineering team.
Structured requirement-based verification processes with full traceability and documented evidence, aligned with aerospace systems engineering best practices.
This approach facilitates technical audits and formal certification processes when required.
Flight testing
Validation in real operational conditions to ensure system maturity.
PrimeCor Flight Control Units (FCU)
FCU-ALPHA
Autopilot for heavy-lift UAS – SAIL III & IV
Advanced control, high reliability, and scalable architecture for mission-critical operations.
The FCU-ALPHA is an integrated navigation, flight control, and mission management unit designed for heavy-lift UAS and high-demand operational environments.
Its architecture enables scalable redundancy while maintaining a compact, weight-optimized design. Integrated dissimilar monitoring provides a high level of operational safety in accordance with applicable aeronautical standards (EASA and NATO).
- Articulated, semi-articulated, and rigid-rotor helicopters
- Fixed-wing aircraft
- Multirotors
- Hybrid multirotor–fixed-wing platforms
- Automatic waypoint navigation
- Automatic take-off and landing (ATOL)
- Configurable nominal and contingency trajectories
- Geofencing and geocaging
- Advanced mission management and recovery logic
- GPS-INS sensor fusion with tolerance to temporary GPS loss
- Native DGPS and RTK integration
- Third-party sensor integration with:
- Comparison and voting against PrimeCor sensors
- Custom sensor fusion development for customer-specific sensors
- Support for multiple standard UAS buses and protocols
- Architecture adaptable to platform-specific requirements
- Dedicated interfaces defined per program
FCU-BRAVO
Autopilot for lightweight or expendable UAS – SAIL II
Simplicity, efficiency, and reliability for low-risk platforms.
The FCU-BRAVO is a compact, lightweight autopilot optimized for cost, size, and power consumption, while retaining PrimeCor’s advanced navigation and control capabilities.
Designed for platforms where simplicity is critical, it incorporates an independent monitoring architecture that ensures an appropriate level of operational safety.
- Conventional helicopters
- Fixed-wing aircraft
- Multirotors
- Hybrid multirotor–fixed-wing platforms
- Automatic waypoint navigation
- Automatic take-off and landing (ATOL)
- Nominal and contingency trajectories
- Geofencing and geocaging
- Integrated mission management and emergency recovery
- GPS-INS fusion with tolerance to temporary GPS loss
- RTK-compatible with ground reference station
- Configurable interfaces based on UAS architecture
- Support for industry-standard protocols
- Adaptation to aircraft-specific requirements
Flight-proven Experience in Flight Control Systems
Our autopilots operate on real UAV platforms, supporting mission-critical operations in demanding environments.

Sistema de control de vuelo para helicóptero no tripulado diseñado para operaciones especializadas de seguridad y vigilancia.

Sistema de control de vuelo para helicóptero no tripulado destinado a logística, defensa civil, lucha contra incendios, búsqueda y vigilancia marítima.

Sistema de control de vuelo para helicóptero UAV enfocado en misiones de búsqueda y rescate, seguridad y vigilancia.

Sistema de control de vuelo para helicóptero UAV enfocado en misiones de búsqueda y rescate, seguridad y vigilancia.
Flight Control Systems Aligned with UAS Certification Requirements
We design our FCU and FCS to strictly comply with the regulations and certification standards applicable to each type of UAS operation.
By avoiding unnecessary over-certification, we deliver systems that are fit for purpose, cost-competitive, and compliant without compromising safety.
BEYOND CONFIGURABLE AUTOPILOTS
PrimeCor does not adapt commercial off-the-shelf autopilots.
We engineer the flight control system around your mission, platform architecture, and certification objectives.
Real compliance with your standards.
Custom FCUs designed from the ground up to meet the exact protocols and requirements of your mission.
Efficiency and risk reduction.
Optimized functionality, reduced software complexity, and lower operational risk.
Scalability and technical transparency.
Open, evolvable flight control platforms developed by an in-house engineering team.