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Composite Marine Propellers

Objective



The application of composite materials technology to shipbuilding has increased in recent years with particular benefits in terms of weight and durability Weight is becoming a critical issue in ship design, particularly for fast ferries in short sea shipping.
The performance enhancement offered by composite propellers has been exploited successfully for aircraft and hovercraft over the last 25 years It is the objective of this project to extend this technology into marine propulsors with the aim of achieving weight reductions of 50 70%, increased overall fuel efficiency of up to 5% and reduction of up to 5dB in hull/blade tip pressure fluctuation, through hydroelastic tailoring.
There is an expanding global market for both fixed and controllable pitch propellers. This project addresses the key technological demands of the design of these highly loaded propellers in composite materials.
A design methodology will be developed to enable innovative
exploitation of the non isotropic properties of composites to be integrated into the hydrodynamic design process. This will be refined, initially using scale models, and then with results from composite materials evaluation and blade root design, to develop full scale test propellers produced by the Resin Transfers Moulding process. The full scale propellers will then be trialed at sea on vessels made available from within the consortium. The results of the full scale tests will be compared with the preceived performance to validate the design methodology and to confirm the predicted performance advantages. The results will also be used to assess the potential of this technology for extension into further propulsor applications.
The successful completion of this project will define the design and manufacturing technologies for composite marine propulsors, confirm their commercial benefits and establish a basis for their acceptance by classification societies and hence end users

Coordinator

Dowty Aerospace Gloucester Limited - Trading as Dowty Aerospace Hydraulics
Address
Arle Court
GL51 0TP Cheltenham
United Kingdom

Participants (7)

CONSORZIO ARMATORI PER LA RICERCA SRL
Italy
Address
Plazza Brignole 5/10
16122 Genova
FINCANTIERI - CANTIERI NAVALI ITALIANI SPA
Italy
Address
Via Cipro 11
16129 Genova
NATIONAL TECHNICAL UNIVERSITY OF ATHENS
Greece
Address
9,Heroon Polytechniou 9
15773 Zographos, Athens
NORWEGIAN MARINE TECHNOLOGY RESEARCH INSTITUTE
Norway
Address
Otto Nielsens Veg 10
Trondheim
REGISTRO ITALIANO NAVALE
Italy
Address
Via Del Viminale, 43
00184 Roma
Secretary of State for Defence - Ministry of Defence
United Kingdom
Address

PO12 2AG Gosport
THE ITALIAN SHIP RESEARCH CENTRE
Italy
Address
Via Ippolito D'aste 5
16121 Genova