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Dakota Cub’s Extended Slotted Wing

Flight protection is something all pilots communicate approximately. They stay it, be given it, and constantly desire to choose it of their everyday lives within the aviation world. For the Super Cub fanatic, the Extended Slotted Wing from Dakota Cub offers pilots the possibility to beautify their safety margin in addition to boosting the climb performance of the aircraft.

Imagine flying your Super Cub at a excessive attitude of assault with the airspeed indicator analyzing 20 mph, then rolling into 60-ranges of bank and initiating a mountain climbing spiral even as deciding on a strength putting that is less than full throttle! That is the typical exhibition that sells the Dakota Cub Extended Slotted Wing. The second most mentioned high-quality of this wing is the capacity to have complete flight manipulate authority at excessive angles of attack. No greater gentle controls, plopping it down, or wing drop on stall.

Mark Erickson, the founding father of Dakota Cub, started his assignment in the 1990’s. All he wanted became a Cub rib. Nothing from Piper turned into available at an inexpensive price and for the reason that Piper ribs have been so fragile, he decided to construct his own. He applied modern-day era to an antique Piper wing that became at the beginning evolved for the YL-14 liaison model of the J5C Cub. The YL-14 wing turned into a slotted wing. According to Erickson, there were only 14 of those plane built before the stop of World War 2. They were specially engineered for brief take-offs of a hundred-feet and climbs with high angles of attack. There are most effective of these nevertheless within the air these days – one in Spain; the opposite in Nebraska.

The Dakota Cub Extended Slotted Wing has several variances whilst compared to the original Cub wing and the L-14 wing for that count. Erickson revised the authentic Piper US35B airfoil used for the L-14. He evolved a custom “T” formed extrusion with the equal dimensions that when used in constructing a truss-style rib, is lighter, less difficult to paintings with, and more strong than the authentic wing. Erickson obtained a STC for the new wing in 1993.

Erickson’s new rib best provides seven lbs to the burden of each authentic Piper wing. The new wing has been structurally tested to in get right of entry to of two,2 hundred lbs, however, the STC limits the gross weight to one,750 lbs for the original wing or 2,000 lbs for the ones wings equipped with the Wipaire One Ton Cub STC. This artificial reduction will optimistically be changed inside the destiny. In the intervening years, Erickson has designed ribs and many other components which might be FAA PMA-ed for all rag-wing Pipers. Erickson was granted the STC for the whole-period leading facet fit in 1998. This slot facilitates keep the boundary layer of airflow at slow speeds. On pinnacle of that, Erickson engineered a squared off wing and bumped off the top bow giving the wing an additional 6% surface vicinity, increased the flaps which results in 44% greater flap area, and pushed the ailerons outward 23-inches to the edge of the wing. He calls it the “Extended Wing.” The squared wing provides approximately eight lbs to the authentic Piper wing.

Adding a slot to the Extended Wing provides any other 9 lbs per wing, but the multiplied protection envelope from which to fly is well well worth the trade-off. The flight traits of the squared-off and slotted wing, which Erickson calls the “Extended Slotted Wing”, is the primary benefit and emphasis in regards to desire of wings to encompass on your Cub challenge. The Extended Slotted Wing is the first-rate performing wing presented by Dakota Cub. It has a one hundred thirty five-inch slot, a squared-off wing with 102-inch ailerons, and a ninety.25-inch flap. Dakota Cub additionally gives the standard Cub wing and a squared-off wing without the slot.

The Extended Slotted Wing is virtually a safer wing. It allows a higher essential angle of assault, slower stall speed, and almost gets rid of the sudden lack of lift instead of a instantly wing. It delays the separation of the air flow from the wing surface, for that reason aileron authority is maintained and in lots of instances the only signal of a stall may be a better-than-regular price of decent. This phenomenon allows the sink fee of the aircraft on approach to touchdown to be managed by means of strength alone permitting a extra specific landing factor with out worry of a wing stalling or falling off on one side. The wing also has an improved roll rate because of the ailerons being extended to the stop of the wing.