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((engineering-stub|date=February 2024))
((More citations needed|date=May 2011))((Short description|Type of ship's propeller))Marine '''composite propellers''' are [[Propeller#Marine|ship propellers]] made from [[Fibre-composite|fiber composites]]. These composites are made from materials like [[Glass fiber|glass]] or [[carbon fibers]] and infused with a high-strength [[resin]] like [[epoxy]] or [[polyimide]]. 

==Attributes==
Composite [[propeller]]s can be made using a [[lay-up process]], leading to [[Anisotropy|anisotropic]] properties. This can create a passive adaptation of self-twisting propeller blades, which are considered more [[Energy efficiency in transport|energy-efficient]] when compared to rigid propeller blades.<ref>((Cite journal|last1=Liu|first1=Zhanke|last2=Young|first2=Yin L.|date=2009-08-01|title=Utilization of bend–twist coupling for performance enhancement of composite marine propellers|url=https://www.sciencedirect.com/science/article/pii/S0889974609000498|journal=Journal of Fluids and Structures|language=en|volume=25|issue=6|pages=1102–1116|doi=10.1016/j.jfluidstructs.2009.04.005|issn=0889-9746))</ref> 

==Longevity==
Composite materials may be considered an environmentally friendly option for propeller blades in some applications. While the composite blades are more resistant to corrosion and impact damage than many [[Metal alloy|metal-alloy]] propeller blades, the water saturation and the propeller application decrease the longevity of composite propellers.<ref>[http://journals.sagepub.com/doi/abs/10.1177/002199839202601407 Effects of Seawater Immersion on the Impact Resistance of Glass Fiber Reinforced Epoxy Composites]</ref><ref>[http://www.technicaljournalsonline.com/jers/VOL%20II/JERS%20VOL%20II%20ISSUE%20II%20APRIL%20JUNE%202011/ARTICLE%2019%20JERS%20VOL%20II%20ISSUE%20II%20APRIL-%20JUNE%202011.pdf Dr. S. Selvaraju, S.Ilaiyavel, 2011 APPLICATIONS OF COMPOSITES IN MARINE INDUSTRY]</ref><ref>((Cite journal|last1=Yamatogi|first1=Toshio|last2=Murayama|first2=Hideaki|last3=Uzawa|first3=Kiyoshi|last4=Mishima|first4=Takahiro|last5=Ishihara|first5=Yasuaki|date=2011|title=Study on Composite Material Marine Propellers|url=https://www.jstage.jst.go.jp/article/jime/46/3/46_330/_article|journal=Marine Engineering|volume=46|issue=3|pages=330–340|doi=10.5988/jime.46.330|s2cid=135597704|doi-access=free))</ref> 

==References==
((Reflist))

[[Category:Propellers]]

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