Rotocraft TRIZ Cases
- Aerial Vehicle Propeller Noise Shaping via Intentional Imbalance
Segmented rotor groups use asymmetrical balance to shape sound pressure levels and frequency spectrums, reducing component stress from vibration.
- Separable Helicopter Rotor Blade Attachment for Load Transmission
A separable helicopter rotor blade attachment uses a bolted junction and stiffened link to transfer centrifugal loads between the airfoil blade and flexbeam.
- Rotorcraft Updraft Take-Off via Negative Pitch Inversion
A rotorcraft generates an updraft by rotating blades at a negative pitch angle to supplement lift during vertical take-off.
- Stacked Swashplate Assemblies for Individual Rotorcraft Blade Control
Serially stacked swashplate assemblies enable independent pitch control of rotorcraft blades through concentric ring sections and sliding mechanisms.
- Passive Pitch Adjustment for Rotor Blades
A passive pitch adjustment apparatus uses levers and rods to rotate rotor blades via aerodynamic torsion moments.