More thrust. Less noise. Stunning ramp appeal.
Raisbeck Engineering and Hartzell Propeller have teamed to develop and certify Swept Blade Turbofan Propellers using practical swept-wing theory as an integral part of its design for 350-Series (B300) King Airs.
SEVEN CUSTOMER-DRIVEN REASONS WHY RAISBECK'S PROPS ARE IN YOUR 350'S FUTURE
Our 4-Blade Swept Propellers carry a list price of $99,724. Call for introductory pricing on our new Composite 5-Blade Swept Propellers for the King Air 350 (only; not available for 300s).
The in-flight cruise cabin sound levels of our 4-blade and 5-blade Swept Turbofan Propellers are noticeably reduced, due to the blade sweep mitigating prop tip noise.
Taxi speed in ground-fine is a respectable 17-20 knots for our 4-blade prop, versus 43 knots for another brand’s tested 5-blade version. Takeoff acceleration, single-engine climb, twin-engine climb to altitude, and deceleration after landing are all improved and noticeable to the pilot. Importantly, there is no floating tendency during landing flare-out. Cruise speeds are the same for both Raisbeck 4-blade and 5-blade propellers, and 2 knots faster at 28,000 feet than the OEM propellers they replace.
4. RAMP APPEAL
The uniquely large blade sweep of our Raisbeck/Hartzell propellers, first introduced in 2012 on the King Air 200 family and in 2013 on the C90 family, has proven to be an eye-catcher when parked at the ramp. That same appeal now transfers to and includes both Swept Propellers for the King Air 350 family.
5. AVAILABILITY & MAINTENANCE
Manufactured and shipped durect from Hartzell in Piqua, Ohio, our 4-blade Swept Propellers are available for purchase and installation now. The Supplement Type Certificate (STC) for our 5-Blade Composite Swept Propellers is expected soon, with production commencing immediately thereafter.
6. INSTALLED WEIGHT SAVINGS
The installed weight reduction when replacing the OEM propellers with our 4-Blade Propellers is 39.8 pounds. This is due to the thin blade airfoils and new lightweight aluminum hubs, which replace the OEM steel hubs. The installed weight reduction for the 5-Blade Propellers is 47 pounds, due to the carbon fiber Structural Composite construction to the core.
7. FUTURE EPIC PERFORMANCE
Raisbeck’s engineers are continuing to develop a companion King Air 350 EPIC Performance Package, which has as one of its goals a 10 knot increase in cruise speed at 28,000’ and Max. Cruise Power. When available, it will become integral with the Swept Blade Propellers, and be offered to existing Raisbeck King Air 350 Propeller operators at an attractive price.