AEROSPACE & DEFENSE
Engineering the Next Generation of Aerospace Embedded Systems
We give aerospace and defense innovators the insight to build robust, scalable, and cost-efficient embedded systems.
With RTaW-Pegase®, engineering teams validate complex architectures early, optimize computing units and networks, and ensure predictable timing behavior.
Challenges in Aerospace E/E Architecture Development
Next-generation aerospace systems introduce increasing architectural complexity, stricter timing and safety constraints, and an expanding set of powerful communication technologies—spanning deterministic networking standards such as TSN and TTEthernet, and data-centric middleware such as DDS.
Engineering teams must guarantee end-to-end predictability across distributed computing units, evaluate multi-core execution interactions, and ensure certification-ready behavior early in the design cycle.
At the same time, long platform lifecycles and tight cost constraints demand architectures that are optimized, scalable, and resilient to hardware evolution.
One Platform for Predictable Aerospace E/E Architectures
RTaW-Pegase® addresses all these challenges within a single, integrated platform by enabling a correct-by-design approach through early, system-level modeling, analysis, and digital validation of avionics architectures.
Pegase allows teams to evaluate compute and communication behavior together, assess end-to-end predictability, and explore architectural trade-offs early—ensuring deterministic, optimized, and certification-ready designs before hardware and software are finalized.
Addressing Key E/E Architecture Challenges With RTaW-Pegase®
Rising System Complexity
To manage the complexity of distributed platforms, multi-core processors, and heterogeneous networks, RTaW-Pegase provides a unified, system-level modeling environment that captures tasks, execution chains, and data flows across compute and communication domains. This enables early validation of integrated avionics architectures and gives engineers full visibility into system behavior before implementation.
End-to-End Determinism & Timing Guarantees
To ensure strict worst-case timing guarantees for flight-critical functions, Pegase performs end-to-end timing analysis across complete execution and communication chains. By validating worst-case latencies early, teams can confirm deterministic behavior for safety-critical functions such as flight control or mission management.
Multi-Core & Deterministic Network Integration
To address interference and contention introduced by switched Ethernet technologies such as TSN, TTEthernet, AFDX (NG) and multi-core processors, Pegase jointly analyzes multi-core execution effects and network behavior. This combined analysis exposes cross-domain interactions early, supporting reliable integration of multi-core avionics platforms with deterministic networks.
Certification & Safety Constraints
To support certification-driven development, RTaW-Pegase enables a correct-by-design approach based on analyzable and traceable system models. Early validation of timing, resource margins, and architectural assumptions provides quantitative evidence that can be reused throughout certification activities.
Cost, Schedule & Hardware Over-Dimensioning
To avoid overly conservative hardware dimensioning, Pegase enables early architectural exploration and accurate resource sizing. By comparing design alternatives and evaluating compute and network utilization, teams can optimize hardware selection while maintaining required safety margins.
Long Lifecycle Scalability & Evolution
To support long-term scalability, Pegase enables “what-if analyses” to quantify the impact of increased workloads, added functions or computing units, and hardware upgrades. This allows teams to evaluate future architectural changes while preserving predictability and compliance across decades-long platform lifecycles.
Aerospace modules of RTaW-Pegase®
RTaW-Pegase is modular, allowing you to choose technology-specific modules that tailor the software to your project needs. Explore how modules can assist your team
MODULE DESCRIPTION
- Modelling, Visualization and Variants Management
- Any physical layer including 10BASE-T1S
- Simulation and worst-case analysis: : 802.1Q, AFDX, TTEthernet, CBS, TAS, preemption, TCP, UDP, TFTP, CB, DRR, T1S, AS-2020, ATS, PSFP, DDS
- Automated configuration: (redundant) routing, 802.1Q (priorities), CBS (idle slopes), TAS (schedule), T1S (schedule), preemption, ATS, PSFP (traffic policer), combined QoS mechanisms
- Supports the design and verification of IEEE802.1DP-compliant networks
- YANG export: TSN devices characteristics import, IEEE/IETF compliant YANG models, deployment over Netconf
- What-if analysis: scale load, migration from CAN (FD) to T1S
- Fault-injection: transmission errors, “babbling idiots”
MODULE DESCRIPTION
- Worst-case analysis & timing accurate simulation
- Gateways: CAN – CAN, CAN-Ethernet (Autosar Socket Adapter)
- Automated configuration: Allocation of IDs & offsets
- Traffic model: command & control, audio/video, diagnostics, segmentation, event-triggered, …
- What-if analysis: Migration to CAN FD & CAN 2.0B, scale load
MODULE DESCRIPTION
- Zero-Config TSN® (ZCT): Automated selection and configuration of TSN protocols
- Topology-Stress-Test® (TST): Cost-aware extensibility analysis
- Topology Optimizer® (TOP): Cost and weight-optimization of the communication architecture
MODULE DESCRIPTION
- Support RTOS, hypervisors and ARINC653
- Task scheduling: FPS, NPFPS, schedule tables
- Simulation & schedulability analysis
- End-to-end delays with Gantt charts: Sensor → CPU → network(s) → CPU → actuator
MODULE DESCRIPTION
- Switched Ethernet and Controller-Area Network
- Trace visualisation as Gantt chart with recognition of protocol messages
- Provide actual performance metrics as seen in the traces (e.g., loads, jitters)
- Identify departures from the specification in the traces (e.g., sizes, transmission patterns, unknown frames)
- Support of industry standard trace formats such as PCAP
MODULE DESCRIPTION
- Simulation & Analysis
- Frame & PDU routing
- Protocol agnostic
- 802.11p support
- Gatewaying to/from wired networks
MODULE DESCRIPTION
- Worst-case analysis & simulation
- Gatewaying to/from Ethernet / AFDX
Explore Our Recent Product Updates & Roadmap
Trusted by the Industry LEADERS Worldwide
Leading aerospace OEMs like ArianeGroup, Airbus Helicopters, and NASA rely on Pegase – see the companies that trust us
Leverage a wealth of resources
Technical documents, manuals, examples, trainings, R&D papers, and the practical experience of our team constitute a body of knowledge that serves as a solid foundation for your projects.
Experience and Expertise
RTaW Leverages 20 Years of Experience in E/E Architecture Design.Built through cutting-edge A&D projects and continuous R&D works over the years.
Customer Applications of RTaW-Pegase®
Since 2013, Airbus Helicopters has relied on Pegase for the design and verification of their CAN and Ethernet networks (see joint study – paper, slides).
Trusted by NASA (Lunar Gateway and HPSC) and ArianeGroup (Ariane 6), Pegase ensures correctness of Time-Triggered Ethernet transmission schedules, and enables timing-aware TSN network design.
Supporting TSN migration and technology selection at Dassault Aviation, Airbus, Airbus Defence and Space, and Thales.
Leading defense contractors – including Lockheed Martin, BAE Systems, SCI, Leonardo, and KNDS – rely on RTaW-Pegase or TSN.configurator in their workflows.
Driving the design of next-generation space systems at Axiom Space and CNES.
Partnering with RTI (Connext DDS) and SoC-e / Relyum to deliver integrated, timing-aware DDS and TSN solutions for safety-critical distributed systems.
