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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.

Our products

Propeller systems
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High-performance propeller solutions engineered for maximum efficiency and safety.
Efficiency · Performance · Performance
Special Applications
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Solutions designed for a wide range of aircraft, missions, and environments.
Versatility · Mission-Fit · Adaptability
Accessories & Control
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Enhance performance with smart add-ons tailored to your aircraft’s needs.
Upgrades · Customization · Optimization
Light Sport Aircraft & Ultralight Aircraft
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High-performance propeller solutions engineered for maximum efficiency and safety.
Efficiency · Performance · Performance
Experimental & Vintage Aircraft
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Precise control and hydraulic systems for smooth, reliable operation.
Precision · Stability · Reliability
Technology
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Technical data, certifications, and resources for seamless integration.
Technical Data · Certification · Integration
Engine Upgrades
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Technical data, certifications, and resources for seamless integration.
Technical Data · Certification · Integration
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Certified Quality
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Engineered for Safety
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Global Support
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Advanced Engineering

Recent News

Discover the latest news of our various products.
28.07.2026
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Oshkosh Air Venture 2026
Thank you for visiting us at the EAA Airventure Oskhkosh July 20 - 26, 2026 Booth 2013 - 2014.
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10.07.2026
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FAA STC for 7-blade MTV-37 on Piper PA46-600TP and PA46-701TP
MT-Propeller received the FAA STC SA12438IB for the installation of the Silent 7 - 7-blade MTV-37 propeller on the Piper PA46-600TP and Piper 46-701TP powered by the Pratt & Whitney Canada propeller turbines PT6A-42A in PA-46-600TP and PT6A-52 in PA-46-701TP

This installation is already supplemental type certified by EASA STC 10089486.

The installation of the 7-blade MTV-37 on the Piper PA46-600TP and Piper 46-701TP provides a shorter take-off distance by approx. -10%, an enhanced climb performance by approx. 5% and an increased cruise performance by 2-3KTAS.
It also complies with the strict German noise regulations 2010 - „Landeplatz Lärmschutz Verordnung“ for unrestricted airport operations in Germany and other European Countries
 
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04.07.2026
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FAA STC for Mooney M20() and 3-blade MT-Propeller
MT-Propeller received the FAA STC SA12421IB for the installation of the 3-blade MTV-12-B/180-59( ) propeller on the Mooney M20A, M20B, M20C, M20D powered by Lycoming O-360-( ) engines.


The 3-blade MTV-12 on the Mooney M20() has up to 7kg less weight than the orignal propeller, an unlimited blade life and an unbeatable esthetic ramp appeal.
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More about us

MT-Propeller was founded in 1980 by Gerd Muehlbauer, who had already 20 years of experience in propeller development and service at this time. He started his new own company on January 2nd 1981 at the Airport Straubing-Wallmuehle (EDMS) in Germany with 6 employees in a small, one-storey airport owned building.
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