Flight security is a thing all pilots discuss about. They Dwell it, acknowledge it, and usually hope to settle on it within their working day-to-working day lives in the aviation earth. With the Tremendous Cub fanatic, the Prolonged Slotted Wing from Dakota Cub features pilots the opportunity to enrich their safety margin together with boosting the climb effectiveness in the plane.
Imagine traveling your Tremendous Cub at a superior angle of attack Together with the airspeed indicator looking at 20 mph, then rolling into 60-degrees of financial institution and initiating a climbing spiral when deciding on a power environment which is below entire throttle! That may be The standard exhibition that sells the Dakota Cub Extended Slotted Wing. The next most talked about top quality of this wing is the chance to have full flight control authority at large angles of attack. No additional smooth controls, plopping it down, or wing fall on stall.
Mark Erickson, the founder of Dakota Cub, began his mission while in the 1990’s. All he preferred was a Cub rib. Very little from Piper was out there at a reasonable Price tag and Because the Piper ribs were so fragile, he decided to Create his own. He utilized contemporary-day know-how to an aged Piper wing which was initially created for your YL-fourteen liaison version with the J5C Cub. The YL-fourteen wing was a slotted wing. In accordance with Erickson, there were only fourteen of these aircraft designed before the finish of World War 2. They had been particularly engineered for short just take-offs of a hundred-feet and climbs with large angles of assault. There are actually only two of these still inside the air nowadays – a single in Spain; another in Nebraska.
The Dakota Cub Prolonged Slotted Wing has numerous variances in comparison to the first Cub wing along with the L-fourteen wing for that matter. Erickson revised the first Piper US35B airfoil useful for the L-fourteen. He created a personalized “T” shaped extrusion Using the identical Proportions that when used in building a truss-design and style rib, is lighter, less complicated to work with, plus more sturdy than the first wing. Erickson obtained a STC for the new wing in 1993.
Erickson’s new rib only provides 7 lbs to the weight of every initial Piper wing. The brand new wing has long been structurally analyzed to in obtain of 2,two hundred lbs, nonetheless, the STC limits the gross bodyweight to one,750 lbs for the initial wing or 2,000 lbs for people wings equipped Using the Wipaire One particular Ton Cub STC. This synthetic reduction will hopefully be altered Down the road. While in the intervening many years, Erickson has created ribs and all kinds of other areas which can be FAA PMA-ed for all rag-wing Pipers. Erickson was granted the STC for the complete-size major edge slot in 1998. This slot helps preserve the boundary layer of airflow at sluggish speeds. Along with that, Erickson engineered a squared off wing and removed the tip bow supplying the wing yet another 6% surface area, improved the flaps which leads to forty four% more flap area, and pushed the Superslot ailerons outward 23-inches to the edge of the wing. He calls it the “Extended Wing.” The squared wing adds about eight lbs to the first Piper wing.
Incorporating a slot to the Prolonged Wing provides An additional 9 lbs for each wing, even so the amplified safety envelope from which to fly is very well worth the trade-off. The flight characteristics in the squared-off and slotted wing, which Erickson phone calls the “Extended Slotted Wing”, is the principal benefit and emphasis regarding selection of wings to incorporate inside your Cub job. The Prolonged Slotted Wing is the best executing wing offered 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 provides the regular Cub wing as well as a squared-off wing without the slot.
The Prolonged Slotted Wing is just a safer wing. It permits a greater vital angle of assault, slower stall velocity, and nearly gets rid of the unexpected lack of elevate as opposed to a straight wing. It delays the separation with the air flow through the wing surface area, thus aileron authority is managed and in lots of situations the sole signal of the stall are going to be an increased-than-regular charge of good. This phenomenon lets the sink rate with the aircraft on approach to landing for being controlled by ability by itself enabling a more exact touchdown position without having fear of the wing stalling or slipping off on 1 side. The wing also has an enhanced roll charge because of the ailerons becoming prolonged to the top with the wing.
If you need to get total benefit of the Extended Slotted Wing on the Super Cub, then it is recommended to put in a 3-inch gear extension. The gear extension will allow the slow velocity abilities on the wing to take complete impact upon landing. Larger sized tires will present for this also. Quick equipment coupled with smaller tires will lead to tail wheel first landings plus a consider-off operate that is for a longer period than optimal as it’s tougher to attain that larger angle of assault.