NASSC – Naval Fast Patrol Boat

Report
The mission of the Naval Anti-Submarine Combatant
Craft (NASCC) is to provide effective anti-submarine
warfare (ASW) capabilities to foreign naval surface
forces. Supported by a fast and highly-maneuverable
hull-form designed for year-round operations, this
torpedo boat will feature an advanced SONAR suite,
offensive ASW technologies, and the capacity to
support small-scale maritime interdiction operations.
This vessel is designed for diverse, short-endurance
missions in various high-traffic littoral and coastal
regions around the world and specific foreign ports.
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Offensive ASW Operations
Defensive ASW Operations
Underwater Acoustics / SONAR Operations
Towing Operations
Small-Scale Maritime Interdiction Operations
[1]
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Streamlined / Efficient
Shallow Draft
Reduced Wake / Spray at High Speeds
Sufficient Seakeeping Capabilities
Minimal RADAR Return
Common Construction
Aesthetic
Parametric Analysis - Displacement (Full-Load) vs. Length Between Perpendiculars
Naval Anti-Submarine Combatant Craft
(10th Percentile / 90th Percentile Design Lanes)
600
Full-Load Displacement, ∆ (t)
[2]
400
200
[3]
0
20
30
40
50
Length Between Perpendiculars, LPP (m)
60
Length Overall, L OA (m)
37.70
Length Between Perpendiculars, L PP (m)
35.54
Beam, B (m)
7.26
Depth, D (m)
3.34
Draft, T (m)
1.90
Full-Load Displacement, Δ (t)
192
Maximum Speed, V (kts)
35
Brake Horsepower, BHP (kW)
9912
GE LM500 Marine Gas Turbine (2)
Engine Make and Model
MTU S60 1DS Marine Diesel Engine (2)
Drivetrain
CODAG
Propeller System
Controllable-Pitch Propeller (2)
Prismatic Coefficient, CP
0.744
Block Coefficient, CB
0.382
TYPICAL NASCC 3-DAY SPEED DISTRIBUTION
Tow / Loiter
< 10 Knots
30%
Economic Transit
14 Knots
50%
High Transit
28 Knots
15%
Patrol Sprint
35 Knots
5%
35 KNOTS (MAXIMUM SPEED)
1000 NM (ECONOMIC TRANSIT)
THREE-DAY ENDURANCE
(TYPICAL 36-HOUR OPERATIONS)
MAXIMUM RANGE
(1000 NM)
PATROL SPRINT
RANGE
(200 NM)
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Storage / Munitions
Galley / Mess Decks
Enlisted Berthing / Enlisted Head
Fuel Storage
Machinery Spaces / Main Propulsion
• Modern Bridge / Command-and-Control Center
• Dedicated SONAR Suite
• Torpedo Launchers / Internal Torpedo Storage
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Stealth Superstructure
Enclosed RADAR System
Advanced Communications Mast
Automated Deck Gun System (Gyro-Stabilized)
Retractable Towing Frame
Versatile Working Deck
EHP Curve for Naval Anti-Submarine Combatant Craft - (14 APR 11)
Compton / Savitsky Pre-Planing / Savitsky Planing (Hullspeed)
6000
Maximum Speed = 35 kts (Full-Load Displacement, Zero Trim)
Corresponding EHP = 3755 kW (Savitsky) , 3430 kW (Model)
Effective Horsepower, EHP (kW)
5000
Savitsky
Planing
Method
4000
Savitsky
Pre-Planing
Method
3000
2000
1000
MODEL TEST
DATA
Compton
Method
0
0
5
10
15
20
25
Ship Speed (kts)
30
35
40
45
CODAG Propulsion Plant (Iterative Approach)
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MTU S60 1DS Marine Diesel Engine (2)
1,230 kW (Total Rated Power)
328 L / h (Total Fuel Consumption Rate)
Continuous Operation (72 Hours)
[4]
[5]
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GE LM500 Marine Gas Turbine Engine (2)
8,940 kW (Total Rated Power)
2,974 L / h (Total Fuel Consumption Rate)
High Transit / Patrol Sprint (14 Hours)
“V-Drive” Configuration
Exhaust Vented Through Transom
Controllable-Pitch Propeller (CPP) System
[6]
• Reduced Noise / Minimized Acoustic Signature
• Minimized Reduction Gear Complexity
• Greater Efficiency Through Desired Speed Range
• Enhanced Fuel Savings
• Expedited Reversing / Maneuvering
SECTION 5.2 – INTACT STABILITY CURVE FOR FULL-LOAD CONDITION
Δ = 192 Tonnes , VCG = 3.0 Meters
GZMAXIMUM = 0.740 Meters at 35.5°
AVS = 75.2°
Predicted DF Angle ≈ 45°
Albertson, Harmon, Laun
Naval Anti-Submarine Combatant Craft (27 MAR 11)
VALID for Beam Winds Criteria
VALID for Personnel Criteria
High-Speed Turns Limited to Less Than 25 Knots
[7]
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Passive Towed-Array SONAR System (TASS)
Active / Passive Hull-Mounted SONAR System (Optional)
Automated Deck Gun System (Bridge-Controlled)
Dual Torpedo Launchers
Small-Arms Storage / Machine Gun Mounting Rails
• Dedicated SONAR Suite / ASW Center
• Mission-Planning / Command-and-Control Capabilities
• Advanced C4ISR / Navigation Systems
• Improved Hull-Form Efficiency
• Reduced Acoustic Signature
• Reduced RADAR / Heat Signature
• Propeller Optimization
• Enhanced Manufacturing / Production Efficiency
• Mission Expansion (Adaptability / Modularization)
• Enhanced Combat Systems
• Additional Refinement via ABS Standards
Professor Paul Miller
Mr. Paul Cojeen
CDR Patrick Hudson, USN
Mr. John Zseleczky
Mr. Charlie Weil
Mr. Dean Schleicher
Mr. Tom Price
[1]
http://www.defense.gov/dodcmsshare/newsphoto/1997-01/961223-N-0000O-002.jpg
[2]
http://www.austal.com/index.cfm?objectID=694676A7-A0CC-D996E385B313F922
[3]
http://www.fas.org/man//dod-101/sys/ship/mark_v_soc.jpg
[4]
http://img.nauticexpo.com/images_ne/photo-g/boat-engine-in-board-diesel-engine- 600-900-hp-electronic-fuel-injectionturbocharged-228499.jpg
[5]
http://img.nauticexpo.com/images_ne/photo-g/gas-turbine-for-ships-192671.jpg
[6]
http://www.dt.navy.mil/pao/hi res images/Sept/lpd_porpeller.jpg
[7]
http://www.strategypage.com/gallery/images/MK-46-Torpedo-Launch.jpg

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