Engine Modules & Subsystem Architecture
Combat jet engines are divided into modular sections for easier maintenance, design upgrades, and performance tuning. Each module below includes core subsystems that define its function and interaction with the whole propulsion architecture.
🧩 Low-Pressure (LP) Module
Handles initial air compression using fan and low-pressure compressor stages. Designed for high mass flow and low specific work.
🧩 High-Pressure (HP) Module
Performs the majority of air compression at high rotational speeds, enabling high pressure ratios crucial for thermal efficiency.
🧩 Turbines Module
Extracts energy from hot gases to drive compressors and fan. Divided into HP and LP turbine stages.
🧩 Annular Combustor
Mixes fuel and compressed air in a continuous combustion chamber for uniform heat release and high efficiency.
🧩 Accessory Gearbox
Transfers mechanical power to drive pumps, generators, and other accessories via radial driveshafts.
🧩 Casings & Housings
Provide structural integrity and containment for rotating and hot-section modules, with tight thermal expansion control.
🧩 Afterburner & Nozzle
Augments thrust by injecting and igniting fuel in the exhaust stream. Nozzle geometry varies for optimal pressure ratios.
🧩 Adaptive Flow Control
Advanced module for modulating bypass ratios and throat areas based on flight condition to maximize performance.
🧩 Electric Hybrid Integration
Integrates high-speed electric motors for hybrid boost, regeneration, or autonomous taxiing capabilities.