2020:
* Development of noise prediction and integrated system capability for Open Rotors
* Development of noise prediction and integrated system capability for VHBR powerplants:
- Low speed / low PR fan
- Fan design for reduced broadband noise
* Intake, bypass and exhaust duct optimisation
- Low noise intake designs:
- Zero and negative scarfed
- Minimised fan noise component of cabin noise
- Acoustically-lined intake lip
- Advanced acoustic liners : thin, effective, heat resistant, light weight, extension of effective liner area
- Optimised lean burn combustion noise dampers
- Multi-dimensional optimisation of bypass system for noise, performance and structural effectiveness
* Low noise bleed valve design capability
* Low Jet Noise : Installed 3D nozzles
* Maturity of RANS CFD / CAA for use within noise design systems (fans, LPT, open rotor, intakes, bypass
and exhaust ducts, jet noise and installation effects (on fuselage, wing, pylon & empennage) for low noise
2035:
* Airframe/nacelle/engine multi-disciplinary optimisation
* Development of noise prediction and integrated system capability for UHBR powerplants
* Wake control to reduce interaction noise for fans (e.g. trailing edge passive) and open rotor (e.g. pylon blowing adaptive)
* Flow control for reduced broadband noise
* Variable pitch fan
* Combustion and IP System Noise Control
* Variable area nozzle noise performance
* Acoustic adaptive control : Morphing structures (Airframe/Nacelle/Engine), Adaptive Nozzles (Moving Chevrons), Chevrons with microjets, adaptive exhaust system (nozzle/mixer), HLD technologies
* Acoustic active control : Active stators, liners
* Maturity of LES CFD / CAA for use within noise design systems
2050:
. Low Noise Aircraft Configurations
(Blended Wing Body)
