MCM Final Presentation

Mine Countermeasures Vessel (MCMV) Concept Design

23-24 July 2013 1 2013 Summer NREIP Final

Presentation

Team Members

Brian Weber Ocean Engineering

Florida Atlantic University

Reid Richardson Ocean Engineering

Florida Atlantic University

Preston Jones High School Student

Pensacola High School


Presentation

Presentation Outline

• Background

• Concept of Operations

• MCMV Vehicles

• Launch & Recovery Systems

• Naval Architecture

• Operational Profile

• Acknowledgements & Conclusion


Presentation

Background • The MCM Mission Package

allows U.S. Navy ships to remain outside the minefield through the use of unmanned vehicles (UVs)

• Several amphibious ships have the potential capacity to employ the MCM package currently in development for the LCS

Image Source: usni.org


Presentation

Task

Integrate a selection of unmanned vehicles onto a self-sufficient Mine Countermeasures Vessel capable of being deployed from an amphibious ship to survey and sweep a minefield


Presentation

Benefits

• Expansion of mission capability for MCM Mission

• Operate in shallow waters

• Reduced vehicle transit time

• Expanded on-station time

• Modular with other vessels of opportunity

• Manned Navy ships can be kept further from mine hazard

• Amphibious ships to perform other missions

• LCS can be utilized for a combatant mission


Presentation

Concept of Operations


Presentation

MCMV Vehicles

RIB RMV

USV BPAUV Image Source: Bluefin-21 BPAUV Reference Product Sheet

Image Source: USV Reference Booklet

Image Source: oregoniron.com

Image Source: Wikipedia.com


Presentation

//upload.wikimedia.org/wikipedia/commons/8/86/Us_navy_rhib.jpg

•MCMV utilizes space more efficiently than current LCU

•Well deck size was the driving factor of the hull characteristics and size of the MCMV

LPD-17 Well Deck

Top View of LPD-17 Well Deck


Presentation

Image Source

http://static2.businessinsider.com/image/5016e1ceecad04ca65000017-1200/once-the-lcu-is-secured-the-well-deck-can-drain-and-the-cargo-can-be-offloaded.jpg

MCMV Modifications Characteristic LCU 1600 Class MCMV

Length Overall (LOA) 134 ft 180 ft

Beam Overall (BOA) 30 ft 46 ft

Depth 8 ft 10.5 ft

Height 18 ft 27 ft

Deck Area 3,390 ft2 7,290 ft2

Hull Volume 22,427 ft3 64,975 ft3

Displacement (Light) 375 LT 437 LT

Crew Capacity 14 22

Image Source: http://wjm1981.egloos.com/5309873


Presentation

Sea-Painter Boom

•Assists in all launch and recovery

•Relieves longitudinal tension

•Telescopic and slewing 23-24 July 2013 11

2013 Summer NREIP Final

Presentation

USV & RMV Launch & Recovery Systems

•Two arm luffing davit

•Telescopic to clear railing and deck

•Storage cradle

•Hydraulic articulating davit

•Rotates on base to store RMV on cradle


Presentation

•Telescopic articulating crane

•Retrieves BPAUV from enclosure

•BPAUVs stored on carousel

•Single arm slewing davit


Presentation

BPAUV & RIB Launch & Recovery Systems

Storage & Maintenance

•Retractable enclosure

•Access to ISO from enclosure

•RMV pre/post dive checks require protection from the environment

•Metal retractable doors allow access from top and back side

•Houses BPAUV storage carousel

•Protects sensitive electronics from elements


Presentation

Manning of MCMV • Original Crew of LCU: 12

peacetime/ 14 wartime

• Additional 10 Navy crew members will be needed for launch and recovery systems (LARS)

• Maintainer and operator for each of the 3 types of UVs

• Four can be used from the original crew for LARS

• Total Crew: 22

– Plus 10% margin (two crew)

0

5

10

15

20

25

Ship Operation

8

Launch and

Recovery 10

Shared 4

Nu

mb

er

of

Cre

w

Crew Distribution


Presentation

General Arrangements of MCMV

Lower Deck Arrangements


Presentation

General Arrangements of MCMV

Upper Deck Arrangements


Presentation

Boom

Ship Space Classification System (SSCS)

Group # Space Type Area (ft2) Volume (ft3)

Group 1 Military Mission 844 6,415

Group 2 Human Support 1,984 14,322

Group 3 Ship Support 2,631 14,163

Group 4 Ship Machinery 1,409 9,634

Total + 10% Margin 7,555 48,987

Total Available 12,251 64,975 (Hull Volume)


Presentation

Weight Estimation SWBS Groups LCU 1600 (LT) MCMV (LT)

100 Hull Structures 139 204

200 Propulsion Plant 17 14

300 Electrical Plant 8 24

400 Command & Control 2 3

500 Auxiliary Systems 34 51

600 Outfit & Furnishing 28 99

700 Armament 1 2

Lightship Weight 229 397

∆ Weight 168

Lightship with 10% Margin --- 437

800 Deadweight --- 160 Total Loaded Weight w/

10% Margin --- 613


Presentation

Stability & Hydrostatics

Hydrostatic Characteristic

Value Unit

Mean Draft 4.7 ft

Trim 0.2 ft

List Angle 0.2 deg

GM Transverse 38.0 ft

•Low trim and list angle

•High GM will result in a stable ship

0

1

2

3

4

5

6

7

8

9

10

0 10 20 30 40 50 60 70 80

Rig

hti

ng

Arm

(ft

)

Heel Angle (°)

GZ Curve (23°, 8.8 ft)

•

•

(77°, 0 ft)


Presentation

Resistance & Powering

Original Bow

Spoon Bow

TMB Bow

Comparison between three LCU (A) ship shape bows

Results include: •15% of frictional resistance for appendages •Model to full scale correlation allowance •Still air drag estimation •8% design margin

MCMV Parameters

LWL (ft) 180

Draft (ft) 4.7

Displacement (LT) 613


Presentation

Resistance and Powering

0

500

1,000

1,500

2,000

2,500

3,000

5 7 9 11 13 15

Bra

ke

Ho

rse

po

we

r (H

P)

Speed (knots)

Speed vs. Power - Ship Shape Bow LCU (A)

TMB Bow

OriginalBowSpoon Bow

Vo

bje

ctiv

e

V = 8 knots

BHP = 580 HP


Presentation

50% reduction compared to current LCU

Electrical Load

0

200

400

600

800

1000

1200

1400

1600

MCM Vessel

Power (kW)

Powering Analysis

Winter LoadAvailable w/Margin

MCM UV's & LARSPower

Winter Load w/oMargin

Total Required Power 1500 kW


Presentation

Machinery Selection Endurance Requirements •2 to 10 days •50 nm radius from LPD-17

Desired Characteristics •Fuel efficient •High torque output •Reliable

Diesel-Electric 23-24 July 2013 24


Presentation

Diesel-Electric Characteristics •Fuel consumption and propulsion electronically controlled •Increased payload •High reliability •Flexibility in location

Propulsion Selection

Rim Drive Characteristics •All-electric power plant •360° rotation for steering •100% thrust produced in any direction

Desired Characteristics •Maneuverability at slow speeds •Utilize electrical power supply efficiently •Size limitation due to launch and recovering from LPD-17’s well deck


Presentation

Operation Profile •Preliminary estimation of the effectiveness of the MCMV

•Search and sweep rates evaluated over a 2 day and 10 day period

•Unmanned vehicle’s operation time

•Fuel supply for MCMV operations


Presentation

27

Operation Profile

2 Days Search:

Sweep:

`

40 nm2 19 nm2

10 Days Search:

Sweep: 200 nm2 93 nm2

Search Sweep

MCMV LCS

MCMV Compared to LCS

Search 84%

Sweep 35%


Presentation

Operation Profile

0

2,000

4,000

6,000

8,000

10,000

12,000

Ga

llo

ns

2 Day MCMV Fuel Usage

FuelRemaining

Fuel Used

0

2,000

4,000

6,000

8,000

10,000

12,000

Ga

llo

ns

10 Day MCMV Fuel Usage

FuelRemaining

Fuel Used

Propulsion MCMV, LARS & UV Fuel

Propulsion MCMV, LARS & UV Fuel


Presentation

Conclusion

• As an alternative to LCS, the MCMV was deemed feasible for conducting MCM operations

– MCMV can host all off-board vehicles and LARS required for effective MCM

– It can be carried in the well deck of LPD-17

– Leaves LCS free for other operations

– Low impact integration to amphibious ship

– Available for training MCM personnel 29


Presentation 23-24 July 2013

David Ruley

Colen Kennel

Ryan Mortimer

Jovan Brown

Julie Banner

Heather Tomaszek

Charles Dorger

Lt. Kevin Ray

Lt. John Arazny

2012 MCM Team

Acknowledgements


Presentation 30 23-24 July 2013

Questions?

31 2013 Summer NREIP Final


BACKUP SLIDES



Resistance and Powering



Spoon Bow Original Bow TMB Bow

Vs (knots) BHP (hp) Vs (knots) BHP (hp) Vs (knots) BHP (hp)

7.6 507 7.6 329 7.6 70

12.2 1,305 11.4 867 12.2 620

14.5 2,521 13.7 1,850 13.7 1,275

16.0 3,714 15.2 2,683 16.0 2,043

18.3 5,622 17.5 4,622 17.5 3,035

20.6 8,850 19.8 7,051 19.8 4,994

22.1 12,452 21.3 9,507 22.1 7,604

24.4 19,213 23.6 14,299 23.6 10,865

26.6 27,703 25.1 18,554 25.9 15,830

Machinery Selection Diesel-Electric

•Fuel efficient •Run on high loads with high efficiency •High torque •Multiple engine redundancy •Increased payload •Direct control over electrical system •Flexibility of location

Fuel Cell •Costs are lower than diesel •Low maintenance •High reliability •Noise reduction •Natural gas not as accessible as diesel fuel •Not a proven technology in marine systems

Gas Turbine •High power-to-weight ratio •Smaller than conventional engines •Better for larger ships due to high power output •Use more fuel when not under a load



Propulsion Selection Screw Propeller

•Well developed and proven method •Good efficiency at high rotational speed •Relative insensitivity to ship motion •Maneuverability is restricted at slow speeds •Requires extra appendages

Podded Propulsor •Excellent maneuverability •Good speed control over complete range •Use of non-reversing machinery •Complicated Z-drive mechanism •Possibility of interference between podded propeller strut and hull

Water Jet •No appendages •Improved maneuverability •Higher static thrust can be obtain allowing fast acceleration •Less noise and vibration •Occupies a lot of space •Less efficient than propeller

Rim Drive •Reduced space requirements •High dynamic performance •100% thrust in both directions •Propeller design reduces cavitation risk •Need multiple drives to meet power requirements



Operation Profile



Propulsion Load Information

Speed (kts) Power (kW) 2 Day Time (hr) 10 Day Time (hr)

2 110 30 210

8 430 18 30

2 Day Operation

Unmanned

Vehicle Launch

(hr) Recover

(hr) Times

Ops.

Time (hr)

Ops.

Speed

(kts)

Fuel

(gal/hr) Fuel (gal)

# of

Vehicles

USV 1 1 2 7.5 25 20 300 1 BPAUV 1 1 3 10 3 n/a 3 RMV 1 1 2 10 12 15 300 1 RHIB 1 1 1 1 1

10 Day Operation

Unmanned

Vehicle Launch

(hr) Recover

(hr) Times

Ops.

Time (hr)

Ops.

Speed

(kts)

Fuel

(gal/hr) Fuel (gal)

# of

Vehicles

USV 1 1 10 7.5 25 20 1500 1

BPAUV 1 1 15 10 3 n/a 3

RMV 1 1 10 10 12 15 1500 1

RHIB 1 1 5 1 1

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MCM Final Presentation

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