Active Winglets: FAA Certified Disruptive Technology
3 to 4 Times the Fuel Savings of Passive Winglets
Tamarack Active Winglet System Certified
Tamarack® Aerospace Group, Inc. announces the receipt of an Federal Aviation Administration (FAA) Supplemental Type Certificate (STC) for its Active Winglet system for the Cessna CJ business jet. Tamarack now has approval for the installation of its Active Winglets on the Cessna CJ, CJ1, CJ1+ & M2 in the US and all of Europe. Tamarack's Active Winglet technology for the CJ and CJ1 provides a fuel saving and range increase of 25%. The fuel savings and range increase for the CJ1+ and M2 is 13%.
How Winglets Work
Aircraft wing efficiency is all about aspect ratio. Longer wings are more efficient for lift and have lower drag—think gliders. Winglets have the effect of increasing span, reduce drag from wing-tip vortices, and improve the lift distribution over the wing.
ATLAS® Active Winglets are designed for maximum aerodynamic efficiency without the compromises requisite of Passive Winglets. The key to the ATLAS® Active Winglet system is the load alleviation aspect, which allows for the addition of a wing extension and a highly tuned winglet design while keeping the original wing structure.
Passive Winglets, on the other hand, require additional wing structure and weight to carry the additional wing loads. Tamarack’s innovative load-alleviating technology (ATLAS®) allows Tamarack® to aerodynamically “turn off” the winglet in specific conditions, thus dumping additional loads. Load alleviation enables a substantial increase in aspect ratio without the need for wing reinforcement (and added weight) or other compromises to the winglet design.
With the ATLAS® Active Winglet system; load alleviation, wing extension and winglets achieve 3 to 4 times more fuel savings than Passive Winglets do. The ATLAS® Active Winglet system increases aircraft stability and smooths out the bumps of inflight turbulence. The ATLAS® system will also allow an increase in max zero fuel weight as well as provide better high/hot take off performance.
Certification and Testing
Certification of Tamarack® Aerospace’s Active Winglet technology culminates a three year effort that included more than 400 hours of test flights on its testbed aircraft N86LA, a straight CJ C525-0012, built in 1993. During that time the jet has consistently flown at max takeoff weight to its ceiling limit of FL410 in around 30 minutes or less.
At max continuous thrust, the block fuel burn on these flights averaged an amazing 103 gallons per hour. Tamarack’s ATLAS® equipped CJ set an Unofficial World Record flying 1,853nm non-stop while landing with required fuel reserves, after a 6 hour 16 minute flight with only a 26kt tail wind.
“Tamarack has done an amazing thing. They have opened my eyes to a new aerodynamic possibility and reminded me it’s an exciting time in aviation. You have to fly it to believe it. I urge you to do just that.”Noel Yantos