Skis/Runners TRIZ Cases

Pivoting arms and a vertical control lever lift aircraft skids onto wheels without removing side platforms or steps.

Elastomeric mounts and compliant landing legs absorb VTOL impact energy, protecting UAV structure without heavy reinforcement.

Vertical tension-bolt attachments replace lateral shear-bolt joints in rotorcraft skid gear, simplifying maintenance while preserving load transfer.

Vertical tension bolts and pressure plates transfer cross-tube loads into rotorcraft skids with fewer parts, easier maintenance, and less corrosion.

Retractable steel cables deploy a double-board sled to lower aircraft contact pressure on soft snow while retaining pavement operation.

Flexible legs, springs, and dampers absorb steep-landing impact forces while keeping UAV landing gear compact and low drag.

This landing gear uses pivoting aft-swept struts to absorb vertical loads and limit lateral tire scrubbing during VTOL maneuvers.

A skid landing gear damper device uses cranks and link rods to transmit fuselage movements for targeted roll vibration control.

Cross-connected hydraulic lines enable differential actuator mode that reduces hook stress during aircraft undercarriage deployment.

A tension cable member in a skid landing gear assembly resists outward deflection of the cross tube during downward load application.

Varying cross-sections in composite skid members reduce overall weight while maintaining central stiffness, avoiding chemical milling processes.

Electric actuator replaces hydraulic systems to convert helicopter landing gear from fixed to retractable configuration in days.

A tail skid assembly uses a cam mechanism to adjust its deployed position, changing the distance between the skid and the aircraft body.

Segmented stiffening elements constrain crossmember roll deformation to prevent ground resonance without altering vertical stiffness.

A mechanical shock absorption system for unmanned aerial vehicles uses rocker arms and damper legs to absorb landing impacts.

A rotor drive unit slides orthogonally to align thrust with the center of gravity, reducing vibration.

Open cross-section beams replace circular tubes to reduce aerodynamic drag and weight in skid landing gear assemblies.

A retractable undercarriage system moves longitudinal portions between deployed and retracted positions to minimize aerodynamic drag during cruise flight.

Curved composite shell with integrated reinforcement elements reduces casing volume to accommodate additional aircraft systems.

A pivotal platform tilts relative to the UAV frame to adjust the lift and drag profile.

A moveable fairing shields brakes from airflow to reduce noise, then exposes them via a telescopic leg to prevent overheating.

Vertical sliding surfaces on skid landing gear distribute load to stop front parts sinking into soft ground, preventing dangerous tilting.

Curved lower faces on skid extensions increase ground contact area, reducing pressure and preventing sinking or blocking in soft soil.

Elliptical hollow portions in monolithic metallic cross tubes distribute material to critical stress zones, preventing landing impact cracks.

Composite cross tube absorbs landing energy via anisotropic rigidity, preventing fuselage ground contact during rotorcraft touchdown.

Pendulum brackets isolate ground resonance vibrations between helicopter landing gear and cabins without adding structural weight.

Articulated rocker arms in the landing gear stiffener system differentiate deformation modes to reduce ground resonance risk while maintaining vertical comfort.

Bow shaped crosstubes retract into the fuselage to reduce air drag, lowering fuel consumption during cruising.

Streamlined hollow longitudinal elements reduce turbulence and noise by nesting non-structural parts inside the structure.

A lightweight skid shoe assembly uses composite materials to withstand shear forces and protect helicopter skid tubes.

A three-position tail skid mechanism moves a ground contact shoe between stow, landing, and takeoff positions.

Directional free wheels lock during elastic return to prevent rebound bouncing while reducing wear and stabilizing the aircraft on slippery surfaces.

Segmented auxiliary contact member prevents soft ground penetration and tilting by distributing impact forces over a larger horizontal surface area.