Aircraft and space systems are assemblies of tightly coupled subsystems. Engine performance depends on fuel system dynamics. Flight control response depends on hydraulic generation and actuator characteristics. Cabin thermal comfort depends on bleed air availability. In practice, these dependencies mean that subsystem-level design decisions carry system-level consequences – consequences that are rarely visible until integration testing, when changes are expensive. 1D system simulation addresses this directly. By coupling fluid, thermal, mechanical, and electrical domains within a single model, engineering teams can evaluate system-level behaviour before hardware exists – catching transient instabilities, thermal margin shortfalls, and power budget overruns at the design stage, where they can still be fixed.

We build 1D system models that couple fluid, thermal, mechanical, and electrical domains within a single simulation environment, covering everything from gas-turbine and hybrid-electric propulsion to flight control actuation, fuel and hydraulic networks, landing gear, ECS, and aircraft electrical power systems – and extending to rocket propulsion cycles, launch vehicle propellant management, and satellite power architectures. This lets engineering teams evaluate subsystem and platform-level behaviour – startup transients, actuator dynamics, thermal margins, power budgets – long before integration testing, reducing design iterations and de-risking certification test campaigns.