Two-Blade Blended Props Offered In Composite, Or Aluminum
Hartzell Propeller Inc. announced this week it has received a
Supplemental Type Certificate permitting installation of two new
propellers on Diamond DA40 aircraft. In addition to the new
propellers, the STC also permits the use of Hartzell’s new
low-cost/high-performance S-1 series propeller governor.
The new 76-inch diameter, 46.8 lbs., two-bladed composite
propeller features Hartzell's new ASC-II composite technology.
ASC-II technology consists of a blended airfoil design made from
advanced carbon and Kevlar composite materials through a
proprietary, Hartzell-developed manufacturing process.
Hartzell's result is an advanced structural composite propeller
that delivers all the advantages of the company's first generation
of composite propellers -- low weight, low inertia, and low life
cycle costs -- while minimizing the major disadvantage: the
high-cost manufacturing process.
For the DA40, the new ASC-II composite propeller matches the
weight and performance of the original equipment 3-blade propeller
while providing the all-weather durability and reliability of a
true carbon-fiber/Kevlar composite propeller system, which has been
demonstrated and proven through millions of hours of airline
service.
The new Hartzell ASC-II composite propeller has also been tested
and proven to be compatible with the Powerflow exhaust system.
Diamond Aircraft is making the Hartzell ASC-II available as an
option on their new DA40 XLS.
Hartzell also unveiled a new 74-inch diameter, 62.8 pound,
two-bladed aluminum propeller, that also features Hartzell's
advanced blended airfoil design. When compared to Hartzell's
previously approved aluminum propeller for the DA40, the new design
has been structurally enhanced to be compatible with the extra
horsepower created by the available Powerflow exhaust system.
When compared to the original
equipment three-bladed propeller, the result is a two-knot
improvement in cruise performance and comparable climb performance.
The Hartzell 2-bladed aluminum propeller will be standard equipment
on the new Diamond DA40 CS aircraft.
Both new propellers are available as Hartzell Top Prop
conversion kits for retrofit on any Diamond DA40, including DA40s
equipped with the Powerflow exhaust. These propeller kits are also
available from Powerflow Systems for DA-40 owners that want to
install this exhaust system on their aircraft. Furthermore, these
are the only propellers approved for use at 2700 rpm maximum
continuous power with the Powerflow exhaust that do not require the
XL lower cowl.
Both propeller kits come complete with the propeller, a
highly-polished spinner, STC paperwork and the Hartzell Plus Three
warranty, which delivers a full three years or 1000 hours of
coverage. The aluminum propeller kit is the lowest priced propeller
available for the DA40 at a list price of $7,495. The lightweight
ASC-II composite propeller kit lists for $11,295. Both propellers
offer the durability, reliability, and worldwide support network
that comes with a Hartzell propeller.
ANN's Daily Aero-Term (05.17.24): Very High Frequency
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