Arctic Combat Ship (ACS) Presented by: LT Chris MacLean, LT Tim - - PowerPoint PPT Presentation

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Arctic Combat Ship (ACS) Presented by: LT Chris MacLean, LT Tim - - PowerPoint PPT Presentation

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Center for Ocean Engineering Naval Construction & Engineering Program Department of Mechanical Engineering Arctic Combat Ship (ACS) Presented by: LT Chris MacLean, LT Tim Emge, LT Dave Cope 3 May 2012 Sponsors Center for Ocean

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Center for Ocean Engineering Naval Construction & Engineering Program Department of Mechanical Engineering

Arctic Combat Ship (ACS)

Presented by: LT Chris MacLean, LT Tim Emge, LT Dave Cope 3 May 2012

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Center for Ocean Engineering Naval Construction & Engineering Program Department of Mechanical Engineering

Sponsors

  • Dr. Norbert Doerry – Technical Director for NAVSEA

05T

  • Mike Bosworth – Deputy Chief Technology Officer

NAVSEA 05T

1 May 2012 ACS 2

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Center for Ocean Engineering Naval Construction & Engineering Program Department of Mechanical Engineering

Threat and Operational Environment

  • Arctic ice diminished summers by 2030

– Increased commercial shipping, resource development, tourism, environmental interest, strategic focus (Oil/Gas)

  • 2 key drivers of uncertainty:

– Resources/trade – Governance

  • UNCLOS

– Regulates claims beyond the EEZ – Russian extension of continental shelf beyond 200 NM EEZ

  • Planted a flag below North Pole

– U.S. has not ratified

  • 2 Coastal Passages

– Northwest Passage – international strait vs. Canadian inland waters – Northern Sea Route – 5000 NM shorter than Suez Canal

  • Chinese claim to resources

– No national sovereignty over Arctic – One-fifth of world’s population, equal claim to gas/oil

1 May 2012 ACS 3

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Center for Ocean Engineering Naval Construction & Engineering Program Department of Mechanical Engineering

Threat and Operational Environment

1 May 2012 ACS 4

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Center for Ocean Engineering Naval Construction & Engineering Program Department of Mechanical Engineering

Background

  • Post WWII Operation Deep Freeze

– Requirement for heavy icebreakers – Wind Class-USCG/USN/CCG/USSR – USN operated until 1966, then transferred to USCG

1 May 2012 ACS 5

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Center for Ocean Engineering Naval Construction & Engineering Program Department of Mechanical Engineering

Technical Background

ACS 6

Norway Canada

1 May 2012

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Center for Ocean Engineering Naval Construction & Engineering Program Department of Mechanical Engineering

Missions

  • Major Mission Areas (Known-knowns)

– Information, Surveillance and Reconnaissance (ISR) – Maritime Interdiction (MIO) – Humanitarian Assistance & Disaster Response (HADR) – Search & Rescue (SAR)

  • Inherent Modularity (Reconfigurable spaces)

– Research/Exploration (oceanographic & meteorological) – Command and Control – Medical – Autonomous/Manned Vehicles

  • Future Allowance (Known-unknowns)

– Ballistic Missile Defense (BMD) – Anti-Submarine Warfare (ASW) – Anti-Air Warfare (AAW)

1 May 2012 ACS 7

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Center for Ocean Engineering Naval Construction & Engineering Program Department of Mechanical Engineering

Design Philosophy

  • Persistent presence in the Arctic
  • Design for the environment

– Supplement Navy Standards with ABS Requirements for Polar Class Vessels

  • Special consideration for hull structure, propeller, and

machinery

  • Maintain Navy margins and survivability

– Extended on-station time

  • Balance capability with cost

– Presence first, then as much added capability as possible without increasing cost beyond roughly $1B FY11

  • Risk will be minimized to a level appropriate for an

IOC of FY20

– Minimize new technologies to avoid cost increases

1 May 2012 ACS 8

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Center for Ocean Engineering Naval Construction & Engineering Program Department of Mechanical Engineering

Parameter Value LBP 345.5 feet Beam 65.5 feet Draft 20 feet Depth (Station 10) 50 feet Prismatic Coefficient 0.625 Lightship Displacement 5,357 Long Tons Full Load Displacement 7,046 Long Tons GMt /B 0.141 Polar Class 4 Endurance 150 Days Range 17,560 nautical miles Maximum Speed 19.7 knots Sustained Speed 18.0 knots Lead Ship Cost $1.27 Billion (FY11) Follow Ship Cost $977 Million (FY11) Crew 124 Accommodations 156

1 May 2012 9

Final Design Characteristics

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Center for Ocean Engineering Naval Construction & Engineering Program Department of Mechanical Engineering

Final Design Payload

– Aviation: 2 MH-60R Helos – Small Vehicles: 2 RHIBs/1 HC or 1LC – Modularity: 10 TEU – Gun: MK 110 57mm – Crane: 1 30-Ton – VLS: 24 cells

1 May 2012 ACS 10

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Center for Ocean Engineering Naval Construction & Engineering Program Department of Mechanical Engineering

Polar Class 4 Operational Limits in 2020

1 May 2012 ACS 11

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Center for Ocean Engineering Naval Construction & Engineering Program Department of Mechanical Engineering

Engineering Plant Design

  • Azipods becoming preferred drive method

– Increased maneuverability – Less susceptible to drive damage from ice impacts

  • Diesel Electric most common plant on ice class

vessels

  • Conducted in-depth analysis of non-integrated

electric drive vs. Integrated Power System

  • Ratio SS to Propulsion Power near 1:1

– Propulsion power requirement like another load

  • Results showed that IPS provides

– Higher efficiency, therefore less tankage – Fewer engines

1 May 2012 ACS 12

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Center for Ocean Engineering Naval Construction & Engineering Program Department of Mechanical Engineering

Propeller Design

1 May 2012 ACS 13

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Center for Ocean Engineering Naval Construction & Engineering Program Department of Mechanical Engineering

Hull Design

1 May 2012 ACS 14

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Center for Ocean Engineering Naval Construction & Engineering Program Department of Mechanical Engineering

Polar Class Structural Optimization

  • ABS Structural Requirements

for Polar Class Vessels

  • Tool optimizes for minimal ice

strengthened structure weight

– Outputs: plate thickness, frame, and stringer sizes/spacing

  • Verified by comparison to

USCGC Polar Star structural weight

  • Led to section design and hull

girder strength analysis

σallowable >> σcalculated

1 May 2012 ACS 15

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Slide 15 T1 Need to make the scale legible

Tim, 4/18/2012

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Center for Ocean Engineering Naval Construction & Engineering Program Department of Mechanical Engineering

Arrangements Design Drivers

1 May 2012 ACS 16

  • ABS and Canadian Arctic Shipping Pollution Regulations require no

fuel in contact with skin of the ship, i.e. double bottom, for new builds

  • Ice Class Azipod produced by ABB, G=5.0m
  • Large capacity crane and elevator for Mission Bay

loading/unloading

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Center for Ocean Engineering Naval Construction & Engineering Program Department of Mechanical Engineering

Arrangements

1 May 2012 ACS 17

FP MS AP

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Center for Ocean Engineering Naval Construction & Engineering Program Department of Mechanical Engineering

1 May 2012 ACS 18

FP MS AP

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Center for Ocean Engineering Naval Construction & Engineering Program Department of Mechanical Engineering

1 May 2012 ACS 19

FP MS AP

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Center for Ocean Engineering Naval Construction & Engineering Program Department of Mechanical Engineering

Zonal Electrical Distribution

1 May 2012 ACS 20

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Zone 5 Zone 1 Zone 4 Zone 3 Zone 2 Zone 6

PGM PGM PGM PGM

PDM PDM PDM PDM PCM PCM PCM PCM PCM PCM PCM PDM PDM PDM PDM PDM

Deckhouse

FWD AFT

Loads Loads Loads Loads Loads Loads SP PCM PCM Loads

4.16 kV Bus

Key

PCM

Power Conversion Module

PDM

Power Distribution Module PGM Power Generation Module

SP

Shore Power Azipod Propulsion Motor Module

PDM

Zone 7 Hull

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Center for Ocean Engineering Naval Construction & Engineering Program Department of Mechanical Engineering

Conclusions

  • No US Navy Precedent
  • Model Testing Imperative
  • Cost ~1 Billion Dollars
  • Feasible
  • Presence with Modularity/Margins (Reconfigurable

spaces, VDS/Aegis)

  • Low Risk
  • Possible USCG conversion

1 May 2012 ACS 22

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Center for Ocean Engineering Naval Construction & Engineering Program Department of Mechanical Engineering

1 May 2012 ACS 23

Questions

Parameter Value LBP 345.5 feet Beam 65.5 feet Draft 20 feet Depth (Station 10) 50 feet Prismatic Coefficient 0.625 Lightship Displacement 5,357 Long Tons Full Load Displacement 7,046 Long Tons GMt /B 0.141 Range 17,560 nautical miles Maximum Speed 19.7 knots Sustained Speed 18.0 knots Lead Ship Cost $1.27 Billion (FY11) Follow Ship Cost $977 Million (FY11) Crew 124 Accommodations 156