PIQUA, Ohio — August 10, 1994 — Hartzell has been selected to supply five-bladed propeller systems for the Antonov An-28PT aircraft being assembled by PZL Mielec in Poland. The aluminum blade/steel hub Hartzell systems will be fitted to two Pratt & Whitney PT6A-65B turboprop engines of 1100 HP.
The new props weigh only 14 lbs. (6 kg) more than the original three-bladed units despite the addition of two extra blades. Overall the new powerplant sections (engine and prop) will provide an additional 600 HP, reduced weight, greater acceleration and thrust, higher climb rates, smoother overall operation and reduced cabin noise levels.
Hartzell’s five-blade design is already a proven performer functioning in a similar role on turboprop Shorts 330s and 360s, converted Douglas DC-3s, as well as numerous other aircraft.
Hartzell’s blade airfoils for the An-28PT are designed to maximize low speed thrust. The result is improved performance for take-off and climb … an important part of the flight profile of cargo/freight aircraft which may operate out of remote, unimproved airfields.
The new Hartzell system was selected not only for its advanced performance but also on account of the company’s worldwide product service and support network. To support the hundreds of thousands of Hartzell props in service, Hartzell authorized distributors and repair stations are located in North and South America, Europe, Asia, Africa and Australia, providing in-depth support for operators even in the more remote areas where the An-28PT may find its best utilization.
Hartzell Propeller Inc. is the world’s leading manufacturer of propeller systems, enjoying an 85 percent market share on corporate turboprops and a 60 percent share on turboprop airliners. The 77-year-old company is also well-known for its design leadership having introduced the industry’s first full-feathering propellers for light twins, the first fully-reversing propellers for corporate turboprops, and the industry’s first composite structure blades.
Additional Utility/Cargo Aircraft with Hartzell Propellers:
Basler Douglas Turbo DC-3
Conair Grumman Turbo S2
Pilatus PC6 Turbo Porter
Pilatus Britten-Norman BN-2 Turbine Islander
Pilatus Britten-Norman Trislander
deHavilland Twin Otter
Siai Marchetti SF600TP