QinetiQ GRC
Data sheet – Paramarine
Surface Modeller & Solid Modeller Surface Modeller (A001)
•
Rapid hull form generation
•
Solid modelling using the powerful Parasolid kernel
For submarines, there is the Streamlining With The surface modeller enables the designer to develop a surface-based geometrical definition of their ship or submarine. This license configuration includes
functionality
to
support
simple
geometrical types such as Non Uniform Rational B-spline Surface (NURBS) entities, planes, polylines,
Inviscid Flow Theory (SWIFT) methodology to form the external shape from first principles based on inviscid flow theory.
Using a combination of
sources and sinks it is possible to create a streamlined surface rapidly for the outer form of the submarine.
and more complex surface fitting. For
surface
ships,
there
is
the
QuickHull
methodology to assist in rapidly developing hull surfaces with desired form properties and shaping. This uses some boundary B-spline curves and rescales them to fit within user specified key points. A surface is then fitted to this data and distorted to fit the required Cross Sectional Area curve.
A SWIFT hullform
There is also a family of objects that enable 2D drawings to be constructed, which can interrogate solid models to provide deck plans, tank tops and slices to use in reports or exported to other CAD packages. In addition, a powerful set of objects to handle Quickhull fitted to a CSA curve
reports generated from the software to maintain the configuration control is included.
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Data sheet – Paramarine
The Solid Modeller enables the designer to create a
There is the ability to sew sheet patches together to
solid model of a marine vehicle. For this Paramarine
form sheet or solid body results.
uses the industry standard Parasolid™ modelling
forms, superstructure and subdivision can rapidly
library.
Parasolid™ provides a very robust and
be created for use in analysis. For submarines, there
flexible solid modeller that allows geometry to be
is the additional ability to construct pressure hulls
created, manipulated and transferred to and from
from 2D profiles, external freeflood areas and
other packages. 3D solid shapes can be formed by
appendages.
Complex hull
various operations using sheet, wire and point objects or by trimming different bounds against each other. Boolean operations such as unite and subtract are supported. 3D solid shapes can be subdivided to model the internal subdivision of the vehicle. The subdivision is performed in a hierarchical manner to maintain model consistency. As all of the modelling is abstract, unconventional craft can easily be modelled.
Trimaran 3D solid model Paramarine also has an extensive CAD geometry interface including STEP, DXF, IGES and STL.
Submarine bow section with torpedo tubes cut out
For further information, please contact: QinetiQ GRC Haslar Marine Technology Park Haslar Road Gosport Hampshire PO12 2AG United Kingdom Tel +44 (0) 2392 334003 www.grc.qinetiq.com
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Data sheet – Paramarine
Stability Analysis Core Module Stability Analysis Core Module (A003)
•
3rd party validated
•
Comprehensive stability engine
•
Use with advanced analysis modules for a comprehensive range of calculations
Given a subdivided solid model of a ship or submarine,
this
module
provides
all
the
functionality necessary for a designer to perform general stability analyses. This module is normally used in conjunction with one or more of the three advanced stability modules, which provide more specific stability calculations and GZ criteria for warships, commercial ships and submarines. Launching analysis The functionality includes the following: • •
Loading conditions (surfaced and submerged) including normal or compensated tanks GZ curves: intact, damaged or balanced on a wave
•
Cross-flooding time based simulation and analysis against criteria
•
Damage definition
•
Floodable length calculations
•
Freeboard calculations
•
One and two point grounding analysis and assessing float off
•
Limiting KG curves for stability management
•
Deadweight moment curves for operational use
•
Tank calibrations
•
Define the watertight subdivision
•
Docking analysis
•
Launching calculations
All of the stability has been completely written from the ground up in parallel with the development of a Systems Requirement Document (SRD). This was used by DERA (now QinetiQ), an independent party, to validate all of the stability from first principles. The use of objects minimises the amount of input data,
which
reduces
risk
of
errors
and
inconsistencies. As the objects are wired together, any changes will force dependant objects to recalculate such that all the results are up to date.
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Data sheet – Paramarine
QinetiQ GRC
For further information, please contact: QinetiQ GRC Haslar Marine Technology Park Haslar Road Gosport Hampshire PO12 2AG United Kingdom Tel +44 (0) 2392 334003 www.grc.qinetiq.com
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Data sheet – Paramarine
Stability Assessment for Warships Stability Assessment for Warships (A004)
•
UK Ministry of Defence Naval Engineering Standard 109 criteria (intact and damaged surface stability, docking)
•
UK Ministry of Defence Naval Engineering Standard 109 criteria (intact and damaged surface stability, docking)
•
Carpet plots including automatic case generation for symmetric or asymmetric damage
This module provides additional warship specific stability analyses to allow the designer to assess the stability
of
a
warship.
It
builds
on
the
comprehensive common set of stability calculations from the Stability Analysis Core Module and adds on the specific Warship stability calculations.
V-Line and red risk zone shown against the solid model and also on a bulkhead drawing
This module is designed to be used in addition to the Stability Calculator (A003), which provides the core stability functionality.
Carpet plot picture for operator guidance in case of damage
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Data sheet – Paramarine
QinetiQ GRC
For further information, please contact: contact: QinetiQ GRC Haslar Marine Technology Park Haslar Road Gosport Hampshire PO12 2AG United Kingdom Tel +44 (0) 2392 334003 www.grc.qinetiq.com
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Data sheet – Paramarine
Stability Assessment for Submarines Stability Assessment for Submarines (A005) This module facilitates assessment of submerged
QinetiQ GRC The structure of the stability objects enables stability calculations from most scenarios to be examined. For example it is possible to determine ballasts tank blowable capacity, trim draughts from which the submarine will submerge to neutral buoyancy and emerged buoyancy (as defined in NES189). Both intact and damaged stability conditions can be investigated, where damage may
and surfaced stability of a submarine. Paramarine
be to ballast tanks or due to pressure hull
has been developed with submarine stability
compartment flooding.
capability in mind from the start, unusual in a naval architecture package and therefore a market leader in this respect. This module is designed to be used in addition to the Stability Analysis Core Module (A003), which provides the core stability functionality. This module includes the following UK Ministry of Defence Naval Engineering Standard (NES) criteria: •
NES 189 Damage
•
NES 189 Harbour Graphical representation of Submarine attitude and
•
NES 189 Ice
•
NES 189 Shape
•
NES 189 Surfacing under Ice
•
NES 189 Wind
These are in addition to the generic stability standard functionality, where the user can assess a GZ curve against standards that are not predefined.
also a minimised Trim Polygon plot & BG data
The fluid BG in transverse and longitudinal directions can be determined from a submerged attitude and an associated tank state. Trim polygons can be generated based on the trim and compensating tanks as geometrically defined, including fluid restrictions imposed on those tanks, and a consumables polygon.
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Data sheet – Paramarine
QinetiQ GRC
This is especially useful in concept design studies, which can be used in conjunction with the Early Stage Submarine Design module (A014) and for through-life support of the submarine. The trim advisor functionality has been developed primarily for use in Seagoing Paramarine for Submarines. This capability tells the user the tank fluid movements required to obtain a new trim (pitch) and heel attitude and can be used in both surfaced and submerged conditions.
Graphical representation of submarine attitude
A submarine trim and inclining experiment calculations module is also available (UK MoD agreement required for release).
For further information, please contact: QinetiQ GRC Haslar Marine Technology Park Haslar Road Gosport Hampshire PO12 2AG United Kingdom Tel +44 (0) 2392 334003 www.grc.qinetiq.com
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QinetiQ GRC
Data sheet – Paramarine
Stability Assessment for Mercantile & Workboat Stability Assessment for Mercantile & Workboats (A006) This module provides addition commercial ship analysis to allow the designer to assess the stability
Stockholm agreement water on deck calculation
of a warship. It builds on the comprehensive common set of stability calculations from the Stability Analysis Core Module and adds on the specific commercial ship stability calculations. This module allows the designer to assess the adequacy of a surface ship or work boat design against
the
following
commercial
stability
standards: •
UK MCA Workboat Regulations
•
Stockholm Agreement RORO Water on Deck
•
MARPOL Regulations 1973
•
DNV Ice Capable Ships Regulations
•
IMO Probabilistic Damage for Cargo vessels
•
IMO deterministic criteria
•
SOLAS Regulations
Workboat stability analysis
This module is designed to be used in addition to the Stability Calculator (A003), which provides the core stability functionality.
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Data sheet – Paramarine
QinetiQ GRC
For further information, please contact: QinetiQ GRC Haslar Marine Technology Park Haslar Road Gosport Hampshire PO12 2AG United Kingdom Tel +44 (0) 2392 334003 www.grc.qinetiq.com
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QinetiQ GRC
Data sheet – Paramarine
Powering & Endurance Powering & Endurance Analysis Analysis (A009)
•
Comprehensive powering prediction methods
•
Complex endurance parameters can be defined
•
Database for experiment results and regressions
The Powering Analysis capability of Paramarine
Paramarine enables the derivation of all powering
enables the designer to assess the effective power
input data from geometry with a single object, thus
of their vessel including air resistance, appendages,
eliminating the need for approximations and
fouling, propellers, roughness, shallow water,
providing a single data store to which naked hull
amongst others using a variety of regression data.
resistance
prediction
methods
can
refer.
Components of resistance may be mixed and The effective power and resistance methods
matched as required.
include:
schematic visualisation of the appendages within
•
Andersen & Gukdhammer
the 3D graphics pane, providing a swift reality check
•
BSRA method
•
Fung
•
Fung 2
•
Hollenbach
•
Holtrop & Mennen
•
Mercier
•
NPL round bilge
•
Oortmerssen
•
Radojcic
•
Savitsky planing craft
•
Series 60
•
Series 62A & Series 62B planing series
•
Series 64
•
SSPA
•
Takashiro
propeller series, or the Wageningen B series. The
•
Taylor Gertler
designer is able to search by specifying the shaft
on the assessment.
Paramarine enables the
No additional information
needs to be entered.
3D view of brackets, arms and rudder appendages
Given the effective power requirement, Paramarine enables the designer to find a suitable propeller from the AEW 20" series, SSPA Ma high speed
speed or diameter, or neither.
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Data sheet – Paramarine
Endurance The Endurance functionality within the Powering module allows endurance of a vessel to be analysed by specifying the operational profile, for either surface or subsurface vessels. The
propulsion
and
associated
systems
are
modelled by defining alternators, battery banks, diesel engines, diesel generators, electric motors, fuel cells and gas turbines which can be in turn wired up to diesel tanks or LOX storage tanks objects modelled within the design. A mission element outlines activities within a
Submarine Propeller
defined For any of the search methods, a series of limits may be applied to constrain the design. For example, a maximum blade area ratio from construction
considerations
or
a
maximum
pressure coefficient from cavitation and acoustic signature considerations. Limits may also be placed
time
period
such
as
Hotel
Load
requirement, Battery Charging or Propulsion and selects the system elements required to provide power. By linking these elements it is possible to profile the Endurance of a surface vessel or submarine, whilst highlighting unfeasible activities, fuel or battery shortages.
on the range of shaft speeds, the maximum diameter and the maximum tip speed. Submarine Resistance effective power analyses allow the designer to look at both surfaced and submerged hull and appendages resistance. The
pressure distribution and hence is an increase in the
For further information, please contact: QinetiQ GRC Haslar Marine Technology Park Haslar Road Gosport Hampshire PO12 2AG United Kingdom Tel +44 (0) 2392 334003
residuary resistance CR. Methods for analysing mast
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correlation allowance and coefficient of residual resistance values are iteratively calculated based on external form of the submarine casing. Near the surface the resistance increases due to the dissipation of energy in waves, which modifies the
and appendage drag are also included. © Copyright QinetiQ GRC 2009
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Data sheet – Paramarine
Structures
•
Quick and easy to define
•
Quick and easy to define
Structural Definition (A010)
•
Attributes for multiple analyses
The structural definition in Paramarine allows the swift definition of scantlings for an entire ship or submarine.
Given a subdivided hull, Paramarine
generates the geometry of all the panels and bulkheads for the vessel. The panels can then be assigned a scantling definition consisting of plating and stiffener schemas. The result can be seen in the screen shot on the right.
Panels before scantlings applied
Structure in a bulk carrier hold Pannels after scanltings applied Of particular note is the adaptive stiffener schema,
Once defined the structure may be assessed for
which attempts to maintain structural continuity;
example:
this is achieved by varying the stiffener spacing, within user-defined limits, such that each stiffener
•
To generate the basis for a light ship weight distribution
•
To feed into a cost estimation
•
For blast and fragmentation performance assessment
•
Longitudinal Strength assessment
•
Ultimate strength assessment
lines up with one on the next panel.
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Data sheet – Paramarine
Longitudinal Strength (A011)
introducing effective width after local buckling.
This license configuration allows the designer to
Note: Smiths method means Progressive Collapse
estimate longitudinal weight distribution at an
Analysis with Calculated - curves, that involves the
early stage of design, and then to refine it as the
use of numerical methods to determine the stress-
design develops.
strain curves of individual plate and stiffened plate elements, which are then integrated following the
Longitudinal distributions of shear force and
assumptions of simple beam theory in order to
bending moment may be derived from first
trace
out
the
progressive
collapse
curve.
principles, or modified in accordance with UK Ministry of Defence guidelines.
Gordo, J.M. and Guedes Soares, C. (1996a). Approximate methods to evaluate the hull girder
Critical sections of structure may be defined and
collapse strength. Marine Structures 9:3-4, 449-470.
analysed. The effectiveness of individual panels can be modified by the user.
2D critical section of the vessel Output provided includes overall section inertia and moduli about the deck and keel. Indications are given of the closeness of each panel to failure in tension and compression. Soares:HULCOL HULCOL is the ordinary Smith's method for the evaluation of the ultimate longitudinal strength of a hull girder applied using the average stress-
For further information, please contact: QinetiQ GRC Haslar Marine Technology Park Haslar Road Gosport Hampshire PO12 2AG United Kingdom Tel +44 (0) 2392 334003 www.grc.qinetiq.com
average strain relationships based on a beamcolumn approach (Gordo and Guedes Soares 1996a). Influence of panel buckling is accounted
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Data sheet – Paramarine
Structural Analysis for Submarines
•
Pressure hull strength analysis
•
Scantling optimisation
Structural Analysis for Submarines (A012) The submarine structural analysis capability within Paramarine enables the designer to analyse the structure of axisymmetric submarine pressure hulls by using classical analyses as follows: •
Elastic interframe and overall buckling collapse
•
Longitudinal yield failure
•
Elastoplastic overall collapse
•
Stiffener tripping
•
Dome collapse
Cut out view of submarine pressure hull
The analysis available consist of two parts, firstly the classical analysis of axisymmetric submarine pressure hull strength according to methodologies developed by the UK Ministry of Defence over many years. Additionally
Paramarine
is
able
to
optimise
(minimised weight for a given deep diving depth requirement) a submarine's pressure hull structure using the same classical analysis methodologies as the pressure hull strength assessment. Paramarine will indicate the optimum plating thickness for each segment, together with optimum frame geometries for conical and cylindrical segments for a set of user-defined factors of safety.
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Data sheet – Paramarine
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For further information, please contact: QinetiQ GRC Haslar Marine Technology Park Haslar Road Gosport Hampshire PO12 2AG United Kingdom Tel +44 (0) 2392 334003 www.grc.qinetiq.com
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Data sheet – Paramarine
Early Stage Design
•
UCL Building block design method
•
Novel early stage designs
Early Stage Design for Ships (A013) A013) & Early Stage
•
Designer driven
Design for Submarines (A014) (A014) Paramarine is an integrated design environment
Alongside the refining of the functional definition,
that is based on an object-orientated framework
the designer can develop a 3D vessel layout and
which allows the parametric connection of all
allocate the functional definitions to physical
aspects of both the product model and the analysis
spaces in the ship.
together. In addition to this, development and
building block is a functional entity.
It is emphasised that the
investigation of a concept design is streamlined by the Early Stage Design (ESD) module. This innovative approach is based on UCL’s (University methodology,
College
London)
collating
design
Building
Block
requirements,
product model definition and analysis together to establish the form, function and layout of design. A support vessel design layout
In the archetypal initial functional breakdown, below the design are the functional areas ‘float’, ‘move’, ‘fight’ and ‘infrastructure’. For vessels other than warships, one might substitute functional headings of mission or payload for ‘fight’. Other desired top-level functions such as adaptability, or maintainability can also be used.
A frigate represented by its functional Building Blocks
The design is broken down hierarchically in terms of functions (Building Blocks).
The building block
approach proceeds by refining the top-level functional headings into ever greater detail, maintaining
a
function-based
approach
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Data sheet – Paramarine
QinetiQ GRC Early Stage Design is available for surface ships as well as submarines. It can also be used with many of the other Paramarine modules such as powering, manoeuvring, structures, design for production etc to exploit the full width of the Paramarine integrated design environment.
A Trimaran clearly showing the functional areas; Fight (Red), Move (Yellow), Float (Grey), Infra (Green)
Each functional block is assigned characteristics in terms of weight, space, power, crew demands, etc and auditing of these characteristics is performed on a per-block basis, or by standard classification breakdown systems, or by geometrical location.
Frigate hull that allows Parametric resizing as design requirements mature
Systems can also be defined to connect equipments or building blocks together giving important weight information and allowing investigation into the influence of the system design on the overall design. This allows the assessment of design adequacy on the basis of sufficient supply to meet demands of each characteristic, assessing the waterplane attitude and stability based on the design characteristics.
For further information, please contact: QinetiQ GRC Haslar Marine Technology Park Haslar Road Gosport Hampshire PO12 2AG United Kingdom Tel +44 (0) 2392 334003 www.grc.qinetiq.com
An Early Stage Design submarine screenshot
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Data sheet – Paramarine
Design for Production Design for Production (A021) GRC has enhanced the functionality of Early Stage Design. This allows modern Design for Production (DfP) techniques to be applied at the initial design stage, enabling evaluation of DfP issues right from the outset. For complex vessels such as warships, submarines and offshore support vessels, it is essential to consider production aspects of systems and outfit, including their routings, from the earliest stages of
•
Engineering based cost estimation
•
Structure and system producability
•
Shipyard capability audit
firm data against which a cost can be generated. Paramarine’s early stage design environment is based on the functional Building Blocks methodology pioneered by UCL. Combined with parametrically defined structural definition, the complete design can be deconstructed into materials (plates, stiffeners and materials), equipment and construction activities (labour) allowing the producability to be evaluated before reaching the more costly initial design stage.
design in order to reduce the work content associated with production aspects of the vessel’s systems. Deriving the cost of a vessel in the early design stages can be difficult. The design itself may only be represented in a conceptual form providing little
High level definition showing plates, stiffeners, junctions and associated weight centroids In both areas of the software, searchable design data is associated with semantic information (space, weight, type, etc) which can be audited to Screenshot of Structural Production Analysis showing plates, stiffeners and junctions of a bow section
identify items for cost evaluation. Time to perform a cost evaluation is reduced as is the potential for mistakes.
DfP has been implemented in Paramarine by linking the ‘functional design’ with production processes to generate feasibility and costing data associated with a particular build strategy. Different shipyard facilities can therefore be taken into account and the specific construction costs for a particular ship or submarine design ascertained. Such cost and capability information is deliberately not ‘hardwired’ as it is proprietary and varies considerably according to the facilities and production processes of a given shipyard. Bulk carrier hold DfP structural definition
Engine and associated system design can be rapidly
Solid Model view of the bulk carrier hold
visualised to graphically illustrate design layout The ultimate objective is to reduce rework, remove redundant complexity, and reduce the risk of an impractical production design feature being discovered late when the design moves to full development and production.
For further information, please contact: QinetiQ GRC Haslar Marine Technology Park Haslar Road Gosport Hampshire PO12 2AG United Kingdom Tel +44 (0) 2392 334003 www.grc-ltd.co.uk © Copyright QinetiQ GRC 2009
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Data sheet – Paramarine
Manoeuvring for Submarines
•
Submarine derivative prediction
•
6 degree of freedom simulations
•
Manoeuvring limitation diagrams
Manoeuvring for Submarines (A024) Incorporated into Paramarine is the ability to perform
dynamic
manoeuvres.
simulations
of
submarine
This module takes the geometric
shape of the submarine and generates a set of linear derivatives. conjunction
with
These are then used in an
unclassified
nonlinear
coefficient set to provide input parameters for a full nonlinear 6 Degrees of Freedom (DoF) submarine simulation. Alternatively, a coefficient set from a model experiment may be used directly if available.
Paramarine screenshot of a simulation run The simulation is based on the S4 submarine dynamic simulator, formerly of W.S. Atkins, now owned and supported wholly by GRC and provides the user with the ability to simulate a wide range of open-loop manoeuvres. The S4 facility enables the designer to very quickly gauge the main submarine dynamic performance indicators such as tactical diameter, advance and transfer in the lateral plane, and overshoots and depth excursions in the vertical plane.
3D model showing appendages use to calculate coefficient derivatives
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Data sheet – Paramarine
QinetiQ GRC
For further information, please contact: QinetiQ GRC Haslar Marine Technology Park Haslar Road Gosport Hampshire PO12 2AG United Kingdom Tel +44 (0) 2392 334003 www.grc.qinetiq.com
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