Propellers TRIZ Cases

Linear actuators drive a spider ring via thrust bearings to pivot fan blades, resolving complexity trade-offs in aircraft gas turbine engines.

An electronic beta feedback system uses an annular member with singularities and sensors to detect passage and generate signals for accurate computation of blade angle position.

Reinforced spar core combines foam with braided carbon layers to enhance structural integrity in propeller blades.

A cermet coating protects rotor blades from erosion using thermal spray deposition, reducing weight compared to sacrificial strips.

An oil accumulator maintains minimum pump inlet pressure at the propeller high-pressure pump during undersupply conditions.

A vehicle with a moveable wing and coupler system transitions between ground and flight modes.

A propeller blade tip generates non-axial lift through asymmetric geometry and roll angle changes to redirect fluid flow into axial thrust.

Alternating on-axis and off-axis woven fabric layers create a tubular composite spar that resolves material drapability constraints during manufacturing.

A two-part airfoil uses interlocking riblets and grooves to increase adhesive bonding area for hollow fan blade covers.

Curved stacking line and variable chord geometry reduce noise and power consumption while increasing thrust.

Milling an impeller from a single metal block eliminates brazing residual stresses while maintaining stable flow paths in centrifugal compressors.

A wind turbine vibration detection unit extracts specific frequency components using a filtering relay to monitor tower resonance.

Controller adjusts propeller pitch and gas generator idle speed to reduce brake usage and fuel consumption during ground operations.

An adjustable blade balance module uses a threaded screw mechanism to translate external dial rotation into internal mass movement for precise weight positioning.

Inclined fuselage surfaces guide airflow to cruise rotors on vertical takeoff and landing aircraft.

Overlapping metal sheath and guard sections on a composite fan blade prevent delamination during foreign object impact.

Outboard-mounted thrust units on a joined-wing structure separate rotors from the fuselage, creating safe boarding zones while reducing structural loads.

Deployable inflatable float protects rotating elements from liquid surface contact, maintaining anti-torque stability while preventing structural damage.

A turbine blade root fastener uses a threaded rod and elastic clamping element to maintain contact pressure on the blade root.

A propeller blade retention assembly uses a primary bolted collar and secondary detent mechanism to secure blades within the hub receiver.

Internal airbags deploy via gas generators to absorb kinetic energy and reduce impact velocity when propeller blades rupture.

Variable pitch rotors enable safe autorotation during engine failure, resolving the trade-off between propulsion complexity and flight reliability.

Independent wing tilting reduces aerodynamic drag during vertical take-off, lowering thrust energy consumption.

An integrated anti-rotation shroud prevents circumferential movement in turbine engines without adding separate components.

Ceramic matrix composite shielding uses flexible retainers to secure hot section components against thermal stress.

A drone rotor blade integrates a conductive element to form an electrical circuit that triggers a stopping mechanism upon collision.

Dynamic propeller blade adjustment generates anti-sound interference to reduce acoustic emissions while maintaining required lifting force.

Calculates residual pitch angle differences between measured and predicted propeller positions to detect health impairments using existing sensors.

Magnetic locking arms hold inactive rotors at specific orientations relative to airflow, reducing parasitic drag and energy consumption during cruise flight.

Primary and secondary pitch horns on a rotorcraft blade enable independent collective and cyclic control without hydraulic actuators.

A propfan engine uses a contoured outer casing to manage airflow dynamics.

Segmented squealer tips with inclined walls reduce mechanical stresses and gas leakage while maintaining aerothermal performance.

Dynamic pressure adjustment reduces energy loss during stable operations while maintaining rapid actuator response speeds.

A wind turbine rotor blade transition profile incorporates a concave curvature on the pressure side to enhance aerodynamic lift and reduce drag.

Segmented inlet and outlet radii reduce airflow recirculation while minimizing cross-sectional width.

Composite airfoil turbine vane uses standoff to manage thermal expansion while cooling air gap improves efficiency.

An over-center locking mechanism engages a gimbal lock via a spring-loaded linkage to secure the hub assembly.

Segmented ejector thrusters augment thrust via pneumatic flow, reducing engine weight while maintaining sufficient lift for vertical operations.

A turbine blade uses a metallic spar and composite skins to balance mechanical strength against moving mass.

A bi-stable composite internal support structure varies aerofoil geometry through inherent material stability.

Tri-curved paddles reduce hydrodynamic drag, while adjustable height prevents cavitation damage to lined bio-ponds.

Merges the engine output shaft with the motor rotor to provide power redundancy and improve energy utilization while reducing structural complexity.

Interlaced warp and woof strands overlay a platen to profile peripheral edges, resolving the trade-off between structural strength and aesthetic customization.

A tension airfoil assembly positions lifting blades along a peripheral rim connected to a central hub via spokes.

Interference fit plugs close cored passages in gas turbine blades, eliminating stress from welding and reducing processing time.

A propeller blade housing uses internal fluid passages to direct flow from windward inlets to leeward outlets, creating a pressure difference that generates lift.

A wind turbine generator channels external air through nacelle vents to cool internal equipment without mechanical fans.

Angled forward shaft exposes turbine disk to hotter air, reducing thermal mismatch between seal and disk.

Auxiliary airfoil on wind turbine blade root improves lift-to-drag ratio by resolving sub-optimal aerodynamic performance in circular profiles.

A turbine airfoil with a tapered hollow plenum eliminates abrupt transitions to reduce stress concentrations and improve reliability.