PAU 70cc Ultra flexible Carbon Fiber Landing Gear

Our Carbon Fiber Landing gear is an industry first. They were derived from hundreds of hours of flight testing over several years. Initially they were developed for 180 size profile 3D airframes. The only gear available were 6061 T6 plate gear which worked till the 5th or 6th Harrier Landing when they would squat out and have to be bent back. After that they would keep spreading out even with moderate landings. The more aluminum bends the weaker it becomes and yields easier each successive landing.

I started as everyone does and vacuumed bagged many layers of traditional commercially available STANDARD weight carbon cloth. This certainly made an incredibly strong gear, but had absolutely no flex and ultimately would yield very little till it would delaminate at the top fuselage bend snapping above that bend.

Reassessing how a Landing gear should work it was very obvious it needs to do just that, WORK! By “Working”, I mean it has to actually flex across the whole gear from axle to, and through the fuselage mounting bolts. Also obvious was the fact that carbon fiber is incredibly strong but traditional layups make it very very stiff. This transfers all the landing loads directly to the fuselage and would break the wood mounting points on very hard landings. This was totally Unacceptable.

Through many variations using several types and weights of High Modulus carbon, I was able to produce a highly flexible landing gear that did exactly what I wanted. This gear flexed from the axle through the lower bend and carried through the upper fuselage bend. To facilitate the large flexing travel the gear needed to be higher. This actually makes the airplane sit nose high very similar to full scale aerobatic planes and large prop biplanes.

The landing gear on all planes available today are either aluminum or carbon. The aluminum gear works of course yet acts exactly as aluminum gear has since aluminum was invented. The carbon gear varies wildly from Airfoiled to flat plate or Radiused arched gear.

Each and every carbon gear supplied and available today ALL have the same problem, THEY ARE TOO STIFF! All transfer every single jar and jolt from the runway directly into the fuselage ultimately ripping the mounting blocks out of the fuselage on hard landings. The ones that aren’t stiff or are too stiff and weak simply break upon hard landings or delaminate at the fuselage bend.

This gear is Ultra Flexible and yields to the landing surface always.  The most important aspect of this is its ability to absorb the shock of hard landings and each jolt and jar from uneven surfaces and not transfer that immediately to the fuselage and mounting blocks. This is similar to crush zones and airbags in vehicles in that it dissipates energy through Flexural strength while diminishing the overall impact load.

This is truly an industry first and a game changer in landing gear technology.