Integrated Design and Simulation of Helicopter Nuclear, Biological, and Chemical Protection System

The helicopter’s aircrew faces significant challenges in nuclear, biological, and chemical (NBC) environments due to limited protection devices and crowded space. To safeguard the security and ensure the comfort of the aircrew, the development of a helicopter NBC protection system is crucial. In this study, a helicopter NBC protection system was designed using a top-level architecture with an advanced system-integrated approach. Detailed configuration designs were developed for each subsystem, including air source pressurization, renewable NBC filtration ventilation, cabin temperature, and pressure control system. To verify the reliability of the adsorbent model, a Langmuir isotherm equation was adapted and validated using the experiment data. To verify the performance of the designed system, a dynamic simulation model was created using AMESIM. The findings demonstrate that the cabin temperature and pressure control system can greatly satisfy the demand for aircrews under various working conditions. Furthermore, the renewable NBC filtration ventilation system effectively adsorbs NBC substances and achieves onboard regeneration, thereby extending the working lifespan in contaminated environments. This study contributes to providing an innovative idea for helicopter NBC protection systems.