superstructures in frp composites -...
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COMPANY UNCLASSIFIED | NOT EXPORT CONTROLLED | NOT CLASSIFIEDHenrik Johansson | 01-41020236-000 | Issue 00
Naval experience
SUPERSTRUCTURES IN FRP COMPOSITES
Henrik Johansson
This document and the information contained herein is the property of Saab AB and must not be used, disclosed or altered without Saab AB prior written consent.
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COMPANY UNCLASSIFIED | NOT EXPORT CONTROLLED | NOT CLASSIFIEDHenrik Johansson | 01-41020236-000 | Issue 00
SUPPLIER TO THE SWEDISH NAVY SINCE 1679
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• Karlskrona Örlogsvarv – 1679
• Kockums Mekaniska Werkstad – 1840
• Musköbasen – 1969
• Saab Kockums is a part of Saab since 2014
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COMPANY UNCLASSIFIED | NOT EXPORT CONTROLLED | NOT CLASSIFIEDHenrik Johansson | 01-41020236-000 | Issue 00
OFFICES AND FACILITIES
• Malmö‒ Design and Research
‒ Stirling AIP
• Karlskrona‒ Design and Research
‒ Construction
‒ Maintenance, upgrades and repairs
• Muskö‒ Maintenance, support and repairs
• Singapore‒ Maintenance, support and repairs
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COMPANY UNCLASSIFIED | NOT EXPORT CONTROLLED | NOT CLASSIFIEDHenrik Johansson | 01-41020236-000 | Issue 00
COMPOSITE VESSELS BUILT AT KOCKUMS - EXAMPLES
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Pleasure boats Mine�sweepers CG�Cutters Passenger�crafts
MCMVs��RSwN� MCMVs��RSN� MCMVs��RSwN�
Stealth�demonstrator
Multimission�crafts Patrol�crafts
Hovercraft Stealth�corvettes
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COMPANY UNCLASSIFIED | NOT EXPORT CONTROLLED | NOT CLASSIFIEDHenrik Johansson | 01-41020236-000 | Issue 00
WHY COMPOSITE IN SUPERSTRUCTURES
• Lower structural weight, reduction by >50%‒ Lower centre of gravity
‒ More pay-load
‒ Higher structure - Equipment higher up
• Improved signatures‒ Reduced Radar Cross Section (RCS)
‒ Lowered IR signature
• Integration of sensors in the structure
• Less maintenance
• Long superstructures without sectioning/gaps
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COMPANY UNCLASSIFIED | NOT EXPORT CONTROLLED | NOT CLASSIFIEDHenrik Johansson | 01-41020236-000 | Issue 00
RULES AND REGULATION
Civilian
• SOLAS → No prescriptive rules → Regulation 17
• HSC Code → prescriptive rules
Naval
• Each country decides!
• NATO Naval Ship Code (ANEP-77)
• Classification societies e.g. DNV GL
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COMPANY UNCLASSIFIED | NOT EXPORT CONTROLLED | NOT CLASSIFIEDHenrik Johansson | 01-41020236-000 | Issue 00
DNV GL
• Long experience in composite technology
• Rules for ships in steel, aluminium and composite
• Naval rules
• Rules applicable for ships with steel hulls and composite superstructures
• Kockums AB has been working together with DNV for a long time
• Achieved approval (design approval and survey) for Naval projects
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COMPANY UNCLASSIFIED | NOT EXPORT CONTROLLED | NOT CLASSIFIEDHenrik Johansson | 01-41020236-000 | Issue 00
SAAB KOCKUMS SCOPE
• Design
• Construction‒ One piece
‒ Sections/modules
‒ Integrating steel structure that shall be joined to the steel structure
• Shipping
• Training
• On site support/supervision for the installation
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COMPANY UNCLASSIFIED | NOT EXPORT CONTROLLED | NOT CLASSIFIEDHenrik Johansson | 01-41020236-000 | Issue 00
JOINT CFRP-SANDWICH SUPERSTRUCTURE TO STEEL HULL
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COMPANY UNCLASSIFIED | NOT EXPORT CONTROLLED | NOT CLASSIFIEDHenrik Johansson | 01-41020236-000 | Issue 00
CFRP-SUPERSTRUCTURE FOR THE P28 PROJECT (INDIA)
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Design�and�construction�in�accordance
with�DNV�Naval�Rules
Certified�and�approved�fire
protection�materials
50%�weight�reduction
�ship��ship��ship��ship�
Length�over�all..............................109.1m
Beam�maximum.............................13.7m
Maximum�speed........................... knots
Hull�material................................... Steel
Superstructure��Kockums�Superstructure��Kockums�Superstructure��Kockums�Superstructure��Kockums�
Length..............................................65�m
Weight........................................ 100�tons
Material……........................����CFRP-Sandwich
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COMPANY UNCLASSIFIED | NOT EXPORT CONTROLLED | NOT CLASSIFIEDHenrik Johansson | 01-41020236-000 | Issue 00
CFRP-SUPERSTRUCTURE FOR THE P28 PROJECT (INDIA)
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COMPANY UNCLASSIFIED | NOT EXPORT CONTROLLED | NOT CLASSIFIEDHenrik Johansson | 01-41020236-000 | Issue 00
CFRP-SUPERSTRUCTURE FOR LMV PROGRAM (SINGAPORE)
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Basic�Design
Detailed�Design�and�production�of�
superstructure
Design�and�construction�to�DNV�Naval�Rules
Approval
Survey
8 in order
4 superstructures already delivered
Main�dataMain�dataMain�dataMain�data ����shipshipshipship����
Length�over�all..............................80.0m
Beam�maximum.............................12.0m
Maximum�speed...........................27 knots
Hull�material................................... Steel
Superstructure��Kockums�Superstructure��Kockums�Superstructure��Kockums�Superstructure��Kockums�
Length..............................................18�m
Weight........................................ 20�tons
Material……........................����CFRP-Sandwich
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COMPANY UNCLASSIFIED | NOT EXPORT CONTROLLED | NOT CLASSIFIEDHenrik Johansson | 01-41020236-000 | Issue 00
CFRP-SUPERSTRUCTURE FOR LMV PROGRAM (SINGAPORE)
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COMPANY UNCLASSIFIED | NOT EXPORT CONTROLLED | NOT CLASSIFIEDHenrik Johansson | 01-41020236-000 | Issue 00
EXPERIENCE
• Easier with Naval ships than Civilian‒ Rules and Regulations
‒ Conservatism
• Different level of knowledge
• Training‒ Engineers
‒ Workers
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COMPANY UNCLASSIFIED | NOT EXPORT CONTROLLED | NOT CLASSIFIEDHenrik Johansson | 01-41020236-000 | Issue 00
THANKS!
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