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MT-Propeller Facts – A Technical Comparison

Choosing the right propeller technology has a direct impact on performance, reliability and long-term operating costs. The following comparison highlights the fundamental design differences between MT-Propeller’s natural composite blade technology with a single-piece hub and conventional structural composite blade designs using split hubs and grease fittings.

By focusing on material integrity, simplified construction and maintenance-friendly design, MT-Propeller systems deliver clear advantages in durability, vibration behavior and operational reliability. This overview provides a transparent technical comparison to support informed decision-making.

Structural Design Comparison: MT-Propeller vs. Conventional Systems

MT-Propeller systems are engineered with a fundamentally different design philosophy. Instead of adapting conventional solutions, we rely on advanced natural composite technology and an integrated hub concept that reduces complexity, weight, and maintenance effort. The following comparison highlights the key structural differences—and explains why MT-Propeller systems deliver superior performance, durability, and long-term reliability.
MT-Propeller Composite Blade
Structural Foam Composite Blade
Weight typical 5 bladed Turbo Prop Propeller
12% lower, app 143 lbs. (65 kg)
Typical blade with 88.5" diameter
app. 160 lbs. (72 kg)
Typical blade with 88.5" diameter
Polar Moment of Intertia 5 bladed Propeller
30% lower, app 17760 lbsin2(5,2 kgm2)
Typical blade with 88.5" diameter
app. 23225 lbsin2 (6,8 kgm2)
Typical blade with 88,5" diameter
Damping Coefficients
45% higher vibration damping coefficient equals to 0,0396 -
therefore no grond or flight RPM restrictions
A vibration damping coefficient of 0,0216 Ground RPM - limitations
and possible in flight vibration limitations
Erosion Protection
2 inch wide Nickel erosion sheath, bonded on the blade, protects it against rain, hail, ice, sand and stones.
Less erosion protection due to the small nickel erosion sheath (less than 1 inch), but increased maintenance effort due to complex design.
Vibration
EXTREME LOW vibration due to high damping coefficient and lower moment of inertia.
HIGHER vibration levels as a foam core has no vibration damping at all plus the higher inertia moment. Close to metal.
Service life
Unlimited because of the reparability, maintainig original dimensions during service life.
Same service life expected. No long time experience available. Expensive overhaul costs
Performance
Performance improvement. Special High Lift State of the art aerodynamic airfoils invented in close cooperation with the German aeronatic research institute DLR for better take off/climb and same cruise.
Performance in take off and climb are critical due to thin airfoils which tends to stall partially due to sharp airfoil leading edge.
Reparability
Unlimited replacements of erosion sheaths. Rebuilding of blade tips. Maintaining always original blade dimensions.
Ground strike blade rapair limits unknown. Hub replacement mandatory.
Hub Design
Single piece low maintenance hub. No ADs, No re-greasing needed between TBO.
In field blade replacement on wing possible.
2 piece hub with stress rising crack initiating grease fittings in the highest stressed hub area (blade bearing). Lots of ADs on those hubs. No on wing blade replacement possible.

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Recent News

Discover the latest news of our various products.
01.10.2026
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Visit us at the NBAA 2026 in Las Vegas
Visit us at the NBAA Business Aviation Convention & Exhibition (NBAA-BACE)
October 20-22, 2026 in Las Vegas, NV - Booth No. 3862
30.09.2026
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MT-Propeller Recognized as Cirrus' Supplier of the Year 2026
MT-Propeller is honored to have been chosen as Cirrus‘ Supplier of the Year 2026 out of 200 other suppliers after delivering more than 600+ of its 3- and 4- bladed propellers for the Cirrus SR Series product line of SR20, SR22 and SR22T aircraft within one year after the excellent cooperation between the two companies has started.

For over two decades, the SR Series has been the best-selling high-performance single-engine piston aircraft. Cirrus is renowned for advancing Personal Aviation™ through innovation, quality, safety and exceptional service. Every Cirrus aircraft is equipped with the Cirrus Airframe Parachute System® (CAPS®) and the latest SR Series G7+ models also feature Safe Return™ Emergency Autoland, further advancing the company’s commitment to safety and innovation.

MT-Propeller and Cirrus share the same vision for performance, quality, safety and customer satisfaction.

“Congratulations to MT-Propeller on being recognized as Supplier of the Year.  We are excited to build this partnership with a company that shares our commitment to quality, innovation and excellence,” said Pat Waddick, Cirrus President of Innovation & Operations. “This recognition reflects the high-quality propellers that MT produces for our customers and their aircraft, and we look forward to our continued work with them.”

This is a great recognition of performance, innovation and collaboration and a great start in an ongoing cooperation between Cirrus and MT-Propeller.

The award was presented during the week of Sept. 22nd at the 2026 PX event to MT-Propeller representative, Peter Marshall.
 
About Cirrus:
Cirrus is the recognized global leader in personal aviation and the maker of the best-selling SR Series piston aircraft and the Vision Jet, the world’s first single-engine Personal Jet, and the recipient of the Robert J. Collier Trophy. Founded in 1984, the company has redefined aviation performance, comfort and safety with innovations like the Cirrus Airframe Parachute System® (CAPS®) – the first FAA-certified whole-airframe parachute safety system included as standard equipment on an aircraft. To date, worldwide flight time on Cirrus aircraft is over 19 million hours, and over 300 people have returned home safely to their families as a result of the inclusion of CAPS as a standard feature on all Cirrus aircraft. The company has seven locations in the United States, including Duluth, Minnesota; Grand Forks, North Dakota; Greater Dallas, Texas; Greater Phoenix, Arizona; Greater Orlando, Florida; Knoxville, Tennessee and Benton Harbor, Michigan. Learn more at cirrusaircraft.com. 
 

More about MT-Propeller USA

MT-Propeller USA was founded by Gerd Muehlbauer, president of MT-Propeller Entwicklung GmbH, who wanted to establish a company-owned service center in the U.S. that would offer customers the same quality of service as the headquarters in Germany.
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