Propulsion Architecture
Five Systems. One Acoustic Signature.
Each pillar targets a different stage of noise generation — from the rotor disc to the duct wall. Together they form a single, continuously-tuned acoustic stack.
01 / 05Rotor Disc
Bio-Mimetic Owl-Wing Rotor Blades
Rotor geometry derived from barn owl primary feather structure — serrated leading edges and a compliant trailing fringe break up tonal noise before it forms, instead of masking it after the fact.
- CFRP structural core carries all primary flight loads through a torsionally-stiff D-spar.
- Co-cured Kevlar / TPU flexible feather fringes trail the blade tip, damping vortex shedding in real time.
- Electrospun micro-fiber velvet acoustic skin disrupts boundary-layer turbulence at the sub-millimeter scale.
- Modular hub fallback allows single-blade field replacement without a full rotor pull.
-12 dB
Sound Attenuation
85° C
Thermal Limit
2.1 kg
Blade Mass
800 hrs
Service Interval
Structural Composite — Cross Section
L1
CFRP D-Spar Core
Primary load path, torsion + flap stiffness
L2
Kevlar / TPU Fringe
Co-cured compliant trailing edge
L3
Electrospun Velvet Skin
Sub-mm boundary layer disruption
Technical Specs
- 5-blade articulated hub, teetering flap hinge
- Fringe replacement: field-serviceable, no autoclave required
- Tip speed governed to Mach 0.55 in acoustic-priority mode
Callouts
Fringe patent pendingValidated on Company Acoustic Test-Bed rig
Acoustic Stack — Exploded View
One Ducted Fan. Five Countermeasures.
Scroll to separate the stack, stage by stage, from inlet to nozzle.
01Lip Inlet
02Plasma Electrodes
03Bio-Feather Rotor
04Helmholtz Lining
05Vector Nozzle
01 — Lip Inlet
Contoured composite lip inlet conditions incoming flow before it reaches the rotor disc, softening the pressure gradient that normally produces inlet tonal noise.