Dakota Cub’s Prolonged Slotted Wing

Flight safety is something all pilots talk about. They Stay it, accept it, and often hope to pick it inside their day-to-day lives during the aviation environment. With the Tremendous Cub fanatic, the Extended Slotted Wing from Dakota Cub features pilots the opportunity to enhance their basic safety margin and also boosting the climb effectiveness from the aircraft.

Consider traveling your Tremendous Cub at a large angle of assault Using the airspeed indicator looking at 20 mph, then rolling into 60-levels of lender and initiating a climbing spiral while selecting an influence location that is lower than total throttle! That is definitely The everyday exhibition that sells the Dakota Cub Prolonged Slotted Wing. The pg second most discussed quality of this wing is the chance to have whole flight Management authority at large angles of assault. No far more delicate controls, plopping it down, or wing fall on stall.

Mark Erickson, the founder of Dakota Cub, started his mission from the 1990’s. All he wanted was a Cub rib. Very little from Piper was offered at an inexpensive Price and since the Piper ribs were being so fragile, he chose to build his own. He applied modern-working day technology to an aged Piper wing which was initially created with the YL-fourteen liaison Model of your J5C Cub. The YL-14 wing was a slotted wing. According to Erickson, there were only 14 of these plane designed ahead of the finish of Globe War two. They were exclusively engineered for short take-offs of 100-toes and climbs with large angles of attack. There are actually only two of these continue to inside the air these days – a single in Spain; the other in Nebraska.

The Dakota Cub Prolonged Slotted Wing has numerous variances compared to the first Cub wing plus the L-fourteen wing for instance. Erickson revised the first Piper US35B airfoil utilized for the L-14. He made a tailor made “T” shaped extrusion Together with the exact same Proportions that when Utilized in creating a truss-design rib, is lighter, simpler to operate with, and more robust than the first wing. Erickson received a STC for the new wing in 1993.

Erickson’s new rib only adds seven lbs to the load of every initial Piper wing. The brand new wing continues to be structurally examined to in entry of 2,200 lbs, nonetheless, the STC limitations the gross fat to one,750 lbs for the initial wing or two,000 lbs for those wings Outfitted With all the Wipaire A person Ton Cub STC. This synthetic reduction will hopefully be adjusted Sooner or later. Inside the intervening several years, Erickson has made ribs and a number of other sections which have been FAA PMA-ed for all rag-wing Pipers. Erickson was granted the STC for the complete-size top edge slot in 1998. This slot allows preserve the boundary layer of airflow at sluggish speeds. Along with that, Erickson engineered a squared off wing and removed the suggestion bow providing the wing an extra six% floor area, greater the flaps which results in forty four% far more flap area, and pushed the ailerons outward 23-inches to the edge with the wing. He calls it the “Extended Wing.” The squared wing adds about 8 lbs to the initial Piper wing.

Adding a slot on the Extended Wing provides A different 9 lbs per wing, nevertheless the improved security envelope from which to fly is perfectly definitely worth the trade-off. The flight features of the squared-off and slotted wing, which Erickson phone calls the “Prolonged Slotted Wing”, is the primary edge and emphasis regarding alternative of wings to incorporate as part of your Cub project. The Extended Slotted Wing is the greatest executing wing provided by Dakota Cub. It’s a 135-inch slot, a squared-off wing with 102-inch ailerons, plus a ninety.25-inch flap. Dakota Cub also offers the conventional Cub wing and also a squared-off wing with no slot.

The Prolonged Slotted Wing is actually a safer wing. It permits a better essential angle of assault, slower stall pace, and nearly eradicates the unexpected lack of carry instead of a straight wing. It delays the separation from the air circulation through the wing surface area, So aileron authority is maintained and in many cases the only real indication of a stall will probably be an increased-than-regular price of good. This phenomenon permits the sink fee from the aircraft on method of landing being controlled by ability by yourself enabling a more specific touchdown issue with out worry of the wing stalling or slipping off on a single facet. The wing also has an enhanced roll price due to ailerons being prolonged to the tip in the wing.

If you would like choose comprehensive advantage of the Prolonged Slotted Wing on your Super Cub, then it is recommended to set up a three-inch equipment extension. The equipment extension will permit the sluggish speed abilities of the wing to consider entire impact upon landing. Bigger tires will present for this also. Short equipment coupled with modest tires will result in tail wheel very first landings in addition to a acquire-off run that is definitely for a longer period than exceptional since it’s more challenging to accomplish that increased angle of attack.