1. Hybrid ROV (HROV) Fiber Optic Cable Design
Barbara Fletcher
Space and Naval Warfare Systems Center San Diego
March 2004

2. Outline SSC San Diego Introduction Fiber Design and Selection
Deployment Canister Design
System Integration and Testing
Programmatics

3. Ocean Systems Division Core Capabilities
Ocean Engineering
Undersea Materials
Fiber Optic & Acoustic Communications
Undersea Vehicles
Undersea Search & Work Systems
Diving
Rapid Prototyping
Test, & Evaluation
Electro Optics
Unattended Sensors and Systems
High Performance Computing & Visualization
Rapid prototyping, systems integration and limited production The division’s broad and expert technological base
Integration, Test and Evaluation of components and systems in the laboratory and in theater (reconnaissance, surveillance, weapons systems, unmanned vehicles, internetted unattended ground sensors, underwater cables)
Electro Optics:Optical system test and evaluation, test planning, integration, ocean truth, data analysis and signal processing. Expertise in the following areas:
Laser Technology
Infrared
Low Light Level TV
LIDAR
Hyperspectral Imaging
Target signature measurements: Target and platform characterization at optical (visible and infrared) frequencies.
High-performance computing and visualization: Graphics programming, 3-D modeling, image processing (filtering, compositing, morphing, motion tracking), video processing, hi-performance visualization, and hi-resolution virtual environments.
Undersea Materials: Non-metallic and ceramic materials for viewports and deep ocean pressure housings
Instructional Systems Technology:
Planning, analysis, design, development, implementation, and evaluation services for technical training and human resource management.
Navy training plans development and maintenance.
Fiber Optic and Acoustic Communications: High Bandwidth fiber optic communications, Fiber Optic Microcable, Fiber optic connectors, Flying Plug, Tactical Fiber Extension, ADS support, Acoustic communications for shallow and deep ocean applications.
Undersea Vehicles: Unmanned undersea vehicles for search and survey (AUSS, MNS), launch and recovery systems, Displays.
Undersea Search and Work Systems: Support for manned and unmanned deep submergence systems, including DSV and DSRV programs. Remotely operated vehicle
Diving: Military and Civilian divers all Navy qualified to support planning and conducting at-sea tests, organizing logistics for deployments and remote site testing,and u/w facility inspection and repair.

4. UUV Development Legacy
ROV Innovations
1960s→
Over 30 Systems Developed
5+ AUVs
20+ ROVs
5+ Manned Vehicles
Several fleet deliveries
First ROV- CURV, 1963
First AUV- Free Swimmer, 1978
Continued Innovation to meet USA needs
Work Systems
1970s→
Specialty
1970s→
AUVs
1970s→

5. Fiber Optic Micro Cable (FOMC)
Over the past 20 years, SSC SD has:
Developed the FOMC specification
Developed the precision winding procedure: over 10,000,000 m wound
Wound all Navy FOMC coils
Extensive experience in fiber modeling
Fiber Optic Micro Cable Characteristics
0.032” dia
100 lb. breaking strength
Water weight: 1 lb/km
20-km FOMC Coil Pack
FOMC Winding Machine

6. Tether System Requirements
Depth
11,000 m
Other depth regimes?
Range
How far from bottom clump? 1 km, ?
Varies with depth regime?
Survivability
Self-weight, current
Fish bite- is it an issue?
Ship / component motion
Hockling / tangling
After-use issues
Recovery? Reuse?
Biodegradability?

8. Fiber Options

9. Fiber Analysis Objective
Estimate the longitudinal and axial loading of cable
Tools
SEADYN: known simulation software
WHOI Cable: Modifications to meet mission requirements

10. Fiber Testing Objective
Determine the behavior of existing fiber cables at 11,000 m depth
Candidate Fibers
FOMC
SCI Fiber
Cogent Fibers

11. Canister Design
Fiber Brake Concept
SCI Fiber Dispenser

12. System Integration and Testing
Year 1
Fiber tests: pressure, strength, ?
Deployment canisters: payout
Year 2
Platform Demonstration
ABE
ALVIN
Year 3
System integration

13. FY 2004 Schedule HROV Schedule FY 04 Fiber Design / Selection
Task
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Fiber Design / Selection
Fiber Requirements Determination
Fiber Options Review and Analysis
Fiber selection
Initial fiber testing: pressure, temperature
Test fiber purchase, winding
Canister Design
Initial Concept
Detail Design
Lab models
Shallow Test unit
Instrumented Deep unit
System Integration and Testing
Laboratory Testing
Canister deployment test
System Ocean Test
TBD

14. Budget

15. Thank you for your time Barbara Fletcher Ocean Technology Branch 2744