SWIRL-2
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1. Presentation of the SWIRL-2 propeller
1.1. Description
The
SWIRL-2
propeller range has a new innovative design, specific
about its twisting axis and center of pressure.
Its aerodynamic design allows a
"constant speed" effect
, limiting
variations in engine speed between on ground and in flight.
These propellers allow for
high efficiency
throughout the flight envelope i.e.:
Improved takeoff and climb rate due to higher engine speed, then higher engine efficiency
Many cruise extension
A high user comfort
The blades and the hub of the
SWIRL-2
propeller range are manufactured according the DUC Hélices company
technologies, from unidirectional layers of carbon fibers prepreg epoxy resin.
Their composite structures are defined to obtain the
maximum stresses in torsion
and bending
. Therefore "constant speed" effect is not related to deformation of the
blade but its geometry and specific profile.
Due to its
specific geometric definition
,
excellent performance
is obtained in
both aerodynamic and acoustic, but also in consumption
.
1.2. Characteristics
The
SWIRL-2
propeller range is available:
Tractor configuration (available in right rotation)
Diameters Ø1520, Ø1620, Ø1660, Ø1730, Ø1830mm and others tailor made
Ø59.8
Ø63.8
Ø65.4
Ø68.1
Ø72"
Two-blade & Three-blade
– SWIRL-2
3.20 & 4.17 kg
(7.05 & 9.19 lb.)
SWIRL-2-R 3.30 & 4.32 kg
(7. 28 & 9.52 lb.)
Shielded leading edge in Inconel
®
Carbon composite hub Ø101.6mm
(Ø4”)
with metallic inserts
or carbon composite hub Ø75mm
2-blade hub available in Compact version for Ø210mm spinner
Direct assembly on the propeller-shaft Ø101.6mm
(Ø4”)
Excellence version “
SWIRL-2-R
” for direct drive engine from 100hp to 140hp:
Longitudinal reinforced carbon structure
Higher bending strength
Titanium color finishing
Advanced controls
rpm
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rpm
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