The DUC Swirl forged carbon propeller
SportairUSA is the United States distributor for DUC Propellers, the industry-leading forged carbon propellers from DUC Helices. There are models of DUC propellers suitable for light sport aircraft, ultralights, powered parachutes and experimental aircraft up to 140 HP. Formed under heat and pressure, then precisely finished in a 5-axis CNC router, DUC propellers exhibit outstanding craftsmanship as well as superior performance.
Guaranteed Satisfaction
If your airplane does not perform better with the DUC propeller, return it within 30 days for a full refund.
The Swirl
The Swirl is a simple, ground-adjustable propeller that performs like a complex constant-speed prop. It is the propeller of choice for faster airplanes.
The blades of the Swirl propeller are designed to adjust the effective angle of attack under differing aerodynamic loads to optimize performance while maintaining engine RPM in the optimal torque range. This is done without movement or twisting of the blades. As a result, the DUC Swirl propeller has a constant speed effect, even though the pitch is set on the ground.
The prop takes a slimmer bite under load, and a fatter bite when cruising, without the need for complex electro-mechanical adjustments. Thanks to this effect, there is very little variation of RPM engine between static and dynamic loads. DUC propellers perform better through the whole of the flight envelope, exhibiting:
- Constant speed effect in a simple, not complex, propeller
- Better effectiveness on takeoff and climb due to higher engine speed
- Better cruise speed for a given RPM
- Very smooth operating characteristics
In the INCONEL version, the Swirl has the same advantages as the standard version. The Inconel Swirl blade has a very hard Inconel stainless steel insert to protect the leading edge. This propeller is well suited to a hostile environment (sand, gravel, etc….)
The DUC Windspoon forged carbon propeller
The Windspoon
The Windspoon, with its revolutionary shape, offers unrivalled performance for slower aircraft (speeds up to 80 kts for engines up to 120 hp). It is the ideal solution for trikes and similar aircraft.
Windspoon propellers, in either the tractor or pusher configuration, produce more thrust at lower airspeed than any other propeller.
The precisely engineered profile of the blade is calculated to control the flow of air over the entire surface of the Windspoon. A contrary twist in the profile reduces stress and results in longer blade life. The revolutionary tip design reduces the tip vortex effect. The results are:
- Greater thrust at lower airspeed
- Maximum performance
- Reduced stress for longer blade life
- Lower fuel consumption
- Less noise
The INCONEL version of the Windspoon adds a very hard Inconel stainless steel insert to proect the leading edge.
Forged Carbon
DUC propellers are forged from thermosetting carbon fiber, a process which enables precise reproduction of complex shapes, smooth surfaces and thin trailing edges that result in more power, better efficiency and reduced noise.
Extended Warranty
Warranted for six years, 600 hours against defects in materials and workmanship.
Wide Range of Application
There are DUC propellers for applications ranging from 40 hp ultralights to 180 hp four-seaters in several configurations:
- 2 blades or 3
- Tractor or Pusher
- Clockwise or counter-clockwise rotation
- A variety of sizes
SportairUSA Features These DUC Propellers for 900-series Rotax Engines:
| PROPELLERS | ADJUSTABLE | BLADES | MATERIAL |
| SWIRL | Ground | 2 or 3 | Forged carbon |
| WINDSPOON | Ground | 2 or 3 | Forged carbon |
DUC makes a variety of other propellers, for direct drive and geared applications, that we will special order to meet your requirements.
The Woodcomp KW-10 fully aerobatic propeller
SportairUSA is the North American distributor for Woodcomp propellers, the number one choice for many light sport and experimental aircraft. The Woodcomp factory produces more than 150 types of fixed, ground adjustable and in-flight adjustable aircraft propellers at its advanced manufacturing and testing facility in Odolena Voda, Czech Republic, working in wood, composites and metal.
Introducing the Aerobatic KW-10
KW-10 is a fully aerobatic, hydraulically operated 3-blade variable pitch propeller suitable for piston engines rated from 200hp to 310hp. The blades are of composite materials, available in white or carbon design. The spinner assembly is available in a variety of sizes, and also made of composite materials. The KW-10 is smooth and quiet in operation, with stainless steel leading edge protection. A hydraulic governor, type JSV, or a Woodward governor are availble.
- Number of blades: 3
- Propeller diameter: 71.5 in; 75.5 in; 78 in
- Direction of rotation: clockwise
- Operation type: constant speed
- Blade-pitch control: hydraulic single acting
- Maximum rated speed: 2700 rpm
- Dry rotating weight: 61.8 lbs, including spinner
The ProPulse Aerolastic composite propeller
ProPulse
Propulse is the new aerolastic propeller from Woodcomp, engineered to flex under load so that it performs like a constant speed prop. Aerolastic describes the ability of structurally elastic bodies to bend or deform in response to aerodynamic loads. Under load, when the aircraft is accelerating or climbing, an aerolastic blade is engineered to deform in a predictable manner, which results in a smaller angle of attack. In reduced load conditions, at cruise, the airfoil returns to its original angle of attack. Here’s how the ProPulse performs:
- Climbing – blades take thinner “bites”
- Cruising – blades take fatter “bites”
- RPMs stay in optimum torque range
- Very low mass = quick acceleration
- Smooth performance at all RPMs
- Better climb, faster cruise, improved fuel efficiency
Other Woodcomp Propellers
We maintain a limited stock of Klassic, SR 200 and SR 3000 propellers for Rotax 912 and 914 engines (see list, below). Woodcomp props are also an excellent choice for Jabiru, Subaru, BMW, Verner, HKS, Nissan and Skoda aircraft engines and conversions, and for powered paragliders. Other Woodcomp propellers may be special ordered.
Our featured Woodcomp propellers are available in ground adjustable, in flight manually adjustable, and in flight electronic adjustable versions. Reverse thrust and full feathering options are also available for the electronic adustable propeller.
SportairUSA Features These Woodcomp Propellers
| PROPELLERS | ADJUSTABLE | BLADES | MATERIAL |
| KLASSIC | Ground | 3 or 4 | Composite |
| SR 200* | Ground | 3 | Wood/Composite • Wood/Carbon Fiber |
| SR 3000/3** | In Flight | 3 | Wood/Composite • Wood/Carbon Fiber |
Woodcomp makes a great variety of other propellers, fixed and adjustable, for direct drive and geared applications, that we will special order to meet your requirements.
