Hartzell and Wipaire teamed up to develop the Yukon, a four-blade carbon fiber propeller. Hartzell announced this at the Sun ‘n Fun Innovation Preview on opening day.
The prop features a 75-inch scimitar design, is three knots faster in cruise performance, has a ten percent better climb rate, and includes a 6-year and 2,400-hour warranty. It is a full composite propeller with a nickel leading edge. Wipaire has been testing the Yukon for a few years and the test flights have been completed. The company has sent all necessary paperwork and is awaiting FAA approval. Once the new prop receives FAA approval, it will be available for sale.
Wipaire featured a Cessna Caravan 208 with the Yukon upgrade in its Sun ‘n Fun booth this year. The float plane featured the new four-bladed prop.
“We were really looking to get low-end torque and to get the airplane up on step and get it out of the water quicker,” said Dan Gutz, product sales director- U.S., Canada & Caribbean- Large floats, said. “We’ve been very successful with that. Depending on how the airplane was equipped prior, we’ve been seeing up to 26 percent decreases in ground roll and takeoff roll. For the water, we’ve been seeing up to a 31 percent reduction in takeoff distances. It’s been a really beneficial propeller.”
Wipaire has been using similar propellers on other aircraft as well.
“Our Boss 182 has a three-blade Hartzell that’s the same material,” Gutz said. “It’s approved on it as well and we’ve noticed that the water erosion is almost zero on them. They really hold up well and that’s one of the big concerns, especially with a bigger propeller like this (Yukon). This is a 110-inch propeller, so our other three blades that we are putting on a lot of these airplanes is about 106 inches and the four-blade McCauley is 104.”
“We’ve noticed really good performance takeoff, climb performance is good and we haven’t seen any loss in cruise which is really good,” he said. “We’ve actually seen some beneficial increase in cruise speed, at a lower power setting even.
Hartzell said Wipaire is offering this via STC, hoping to have it by AirVenture or the end of the summer. It has not received FAA approval yet and is not officially for sell, but it is available for orders according to Hartzell.
GlobalAir.com complete coverage of Sun ‘N Fun:
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Sun ‘N Fun hosting fly-out to Bahamas after the show ends
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