Presentación del ponente D. David Andrews de UCL Mechanical Engineering, London College, en la Jornada Transnacional "Demostración Tecnológica en la Industria Auxiliar del Naval"
Realizada el 26 de enero de 2010, en Santiago de Compostela
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D. David Andrews London College
1. Design Issues
for Naval Auxiliaries
David Andrews, FREng, RCNC
Professor of Engineering Design
Design Research Centre, Marine Research Group
University College London
2. Introduction – The UCL DRC
• Professor David Andrews FREng
• Computer Aided Preliminary Ship Design
• Ship Design Methodology
• The Design Environment
• Design of Unconventional Vessels
• Design Assessments and Reviews
• Technical research projects
3. Atypical naval architect
• Warship Project Manager – new amphibious
shipping (LPD, LPH, ATS) plus Royal Yacht study
• Future Projects PM – New concepts CVF, AO,
FASM, FSC and Trimaran
• Professor of Naval Architecture UCL – Trimaran
and SURFCON research
• Director Surface Ships – Building Frigates and
MCMVs plus new FSC plus R. V. TRITON
• Professor Engineering Design UCL – Preliminary
design of complex entities
9. Some Thoughts on Naval Ship Design
• NSS are designed and built very frequently and
are all different for very good reasons
10. Some Thoughts on Naval Ship Design
• NSS are designed and built very frequently and
are all different for very good reasons
• Ship Characteristics tend to dominate the overall
design – weight dominated by structure,
space/form by personnel + propulsion,
topside/development costs by combat system
11. Some Thoughts on Naval Ship Design
• NSS are designed and built very frequently and
are all different for very good reasons
• Ship Characteristics tend to dominate the overall
design – weight dominated by structure,
space/form by personnel + propulsion,
topside/development costs by combat system
• Innovation in Design Characteristics can be battle
winning
- need to explore at initial stages – this can
change the Requirements (e.g. Trimaran and helo
fit)
13. Some Thoughts on Naval Ship Design
• NSS are designed and built very frequently and are all
different for very good reasons
• Ship Characteristics tend to dominate the overall design –
weight dominated by structure, space/form by personnel +
propulsion, topside/development costs by combat system
• Innovation in Design Characteristics can be battle winning
- need to explore at initial stages – this can change the
Requirements (e.g. Trimaran and helo fit)
• S5 - STYLE (robustness, adapt, TLC, lean manning, etc)
scope for innovation AND we now have the tools to
explore options
31. JSS - Final Developed Configuration
Dimension Value Unit Condition Displacement Unit
Length WL 186 m NTG
Length OA 196 m Deep 33297 te
Beam WL 29.8 m Light 21602 te
Beam OA 31 m Light Sea Going 20728 te
Double Hull 1.5 m Working 26879 te
Depth MS 19.3 m JFS
Max Draught 9.3 m Deep 26193 te
Max Air Draught 39 m Light 21602 te
Min Deckhead 2.75 m Light Sea Going 22208 te
Enclosed Volume 121600 m3 Working 23125 te
32. Survivability
• Susceptibility
– Probability of being hit
• Vulnerability
– Probability of being disabled when hit
• Recoverability
– Probability of rectifying the disability after being hit
• Probability of survival = 1 – (S x V x (1 – R))
33. Vulnerability Assessment
• For determining the probability of ship’s systems
surviving a particular weapon detonation
• Example analyses
– Simulation of structures and ship services affected
– Crew casualty analysis
– Validated against test trials
34. Vulnerability Reduction
• Prevention of sinking
– High level of compartmentation and genuine watertight integrity
• Preservation of functionality
– Duplication of systems, zoning
• Damage Control and Firefighting
– Damage Control parties, Zone boundaries, HVAC zoned
• Magazine protection
– Low, armour, spray / flood
35. Adapting Merchant Shipping
• Weapon fit
– Unlikely except for non-lethal weapons
• Sensors and communications
– Close – in, CCTV, better comms
• Protection
– Protect bridge and ship control centre, duplicate
• Survivability
– Improved damage resistance, citadels, (N)BC
• Configuration
– Evacuation but also zoning?
36. Simulation in Preliminary Warship Design -
“Guidance on the Design of Ships for Enhanced
Escape and Operations”
1. To explore the impact on naval ship configurational design of issues
associated with crew manning numbers, function and movement.
2. To identify key performance measures for successful crew performance
in normal and extreme conditions.
3. To extend the ship evacuation software maritimeEXODUS to include
additional non-emergency personnel movement simulation capabilities.
4. To extend the ship design software so that it can provide a modelling
environment that interactively accepts maritimeEXODUS simulation output
for a range of crew evolutions.
5. To demonstrate a methodology for ship design that integrates ship
configuration design with modelling of a range of crewing simulation issues
through PARAMARINE-SURFCON.
37. Additional Design Model Features for
Personnel Simulation: Connectivity Items
Doors in SURFCON
Nodal crowding points
40. What Simulation Could Bring to Preliminary Ship
Design
• Believable solutions
– Both technically balanced and descriptive
• Coherent solutions
– Dialogue with the customer more than numerical measures
– Include visual representation
• Open methods
– Responsive to the issues that matter to the customer
– Elucidated from the customer or user teams
• Revelatory
– Likely design drivers are identified early
– Aids effective design exploration
• Creative
– Options are not closed down
– Rather they are fostered
• The “fifth S” - STYLE
41. Why Ship Synthesis should be 3 Dimensional
- Improve Initial Design
• Naval ships need to be less costly - need to
better understand what is wanted - achieve
through 3-D informed dialogue
42. Why Ship Synthesis should be 3 Dimensional
- Improve Initial Design
• Naval ships need to be less costly - need to better
understand what is wanted - 3-D informed dialogue
• More information rich to avoid mistakes (see DJA’s
listing below). Achievable by better articulation
through 3-D informed dialogue.
• - Type 23 and choice of cellularity
• - FOST ferries not being multihull
• - LPH merchantship standards
• - delay to FSC
• - seeing FSC (C1) as “too big”
• - CVF survivability standard
43. Why Ship Synthesis should be 3 Dimensional
- Improve Initial Design
• Naval ships need to be less costly - need to better
understand what is wanted - 3-D informed
dialogue
• More information rich to avoid mistakes (see DJA
UK list) by better articulation through 3-D dialogue
• Better articulate design issues to wider world
(All Stakeholders - wider Navy, MoD, the rest
of government and to parliament, the media
and the public )