I know this sort of thing is rarely disclosed, or maybe top secret?
Will it have multiple AESA modules – i.e. at the front of the radome, on the sides of the radome, on the wing and at the tail? For 360° Radar coverage?
The Americans and the GCAP consortium are working on a concept called ‘Smart Skin’, in which AESA modules are integrated into the Airframe.
What configuration will the propulsion engine have? 3 fans, 6-7 high-compression stages, and 2 low-pressure and 2 high-pressure turbines?
I ask because, although two high-pressure and two low-pressure turbines make the engine heavier, they also make it extremely efficient, improve the engine’s fuel consumption, optimise pressure equalisation and increase power generation for the subsystems.
| Parameter | 3+7 \mid 2+2 Architecture Impact | Engineering Reason |
|---|
| Specific Fuel Consumption (SFC) | 5–8% lower vs. 1-HPT designs | Higher turbine isentropic efficiency across stage pairs |
| Electrical Output Capacity | High (200 kW+) | Extra torque reserve on the HP shaft |
| Compressor Stability | Excellent | Resists RPM droop during sudden electrical spikes |
| Thermal Stress | Moderated | Lower required temperature drop per turbine stage |