AST2 Hypbrid Profiler Mooring PDR Ocean Observatories Initiative Coastal & Global Scale Nodes At Sea Test 2 Hybrid Profiler Mooring Preliminary Design

AST2 Hypbrid Profiler Mooring PDR

Ocean Observatories Initiative

Coastal & Global Scale NodesAt Sea Test 2 Hybrid Profiler Mooring

Preliminary Design Review

AST2 Hybrid Profiler Mooring PDR

Purpose of AST2 (From 3207-00003)

The purpose of the AST2 DT is two fold: 1.Assess and/or verify key technical aspects (i.e.,

requirements and design) of developmental items intended for production that would otherwise be difficult to accomplish outside an at-sea exercise; and

2.Execute and mature the engineering development, build and test processes on stationary platforms that represent the bulk of marine assets to be deployed for OOI prior to production.


AST2 Assets and Their Configuration (Table1, ibid)

Coastal Surface Mooring (AS02CPSM)

Coastal Profiler Mooring (AS02CPPM)

Global Hybrid Profiler Mooring

(AS02HYPM)

Drawing # 3607-00001 3607-00006 3607-00010

Upper Termination Coastal Standard Power Surface Buoy Submersible surface buoy Surface-Piercing Profiler

Lower Termination BARF Anchor Anchor

Cable/Hose Type EM cable Stretch Hose at Top EM Cable

EM cable

Profilers N/A Wire-following Surface-Piercing

Power Wind/PV Rechargeable Battery

Primary Battery Primary Battery

Telemetry High-Speed Sat Dual Low-Speed Sat

Short-Range RF (Wi-Fi)

Dual Low-Speed Sat Short-Range RF (Wi-Fi)

Inductive


Inductive


AST2 Assets and Their Configuration (Table1, ibid, cont.)

Telemetry High-Speed Sat Dual Low-Speed Sat

Short-Range RF (Wi-Fi)


Inductive

Dual Low-Speed Sat Short-Range RF (Wi-

Fi) Inductive

Platform Controller Full-Function (on buoy) Simple Simple?

DCLs 1 on buoy 1 on mooring (5 m breakout)

N/A N/A

Software Full function platform control OMC platform server

Simple platform control OMC platform server

platform control OMC platform server

Core Sensors For sensor details

click here (still under construction)

Bulk Met (buoy) (initial buy) pCO2 air-sea (buoy) (initial buy)

CTD (5 m) (loaner, RFP buy) 3-channel Fluorometer (5 m)

(loaner ?) Mean Point Velocity (5 m)

(loaner)

CTD (profiler) Dissolved oxygen (profiler)

3-channel Fluorometer (profiler)

PAR (profiler) Turbulent Point Velocity

(profiler) Inductive CTD (frame)

(loaner, RFP buy) ADCP (frame) (loaner)

CTD (SP Profiler float) Mean Point Velocity (SP Profiler float) CTD (SP Profiler

winch) Mean Point Velocity (SP Profiler winch)

CTD (mid-water platform)

Mean Point Velocity (mid-water platform)

CTD (WF Profiler) Turbulent Point

Velocity (WF Profiler)


Comments

• WiFi will not scheduled to be included in the final deployment moorings. This can be added to support testing if required.

• The platform controller will be the SIO controller.


Test Objectives & Compliance

No. Objective Method Compliance Notes

3 Assess power consumption of primary power supplies of sensors and profilers under normal at-sea conditions

Test Full

4 Verify platform controller functionality, telemetry functions, and data acquisition software

Test Partial to Full 1

4a Test the operation of platform controller and its associated software and telemetry functions under typical at sea conditions.

Test Partial 2


Test Objectives & Compliance (continued)


4c Test instrument interfaces, data acquisition hardware and software, and exemplar instruments in a realistic at-sea environment.

Test Partial

4d Assess connection durability for inductive telemetry links

Test Partial to Full 2

5 Assess effects of biofouling on sensor performance

Test Partial

6 Assess effects of biofouling on profiler power consumption and profiling performance.

Test Full


Test Objectives & Compliance (continued)


6 Validate procedures for deployment and recovery of moorings

Demonstration Partial 2

8 Validate mooring design analysis assumptions through post-recovery data assimilation

Test Full

Notes:1) The SIO controller will be used as the platform controller. 2) Full compliance will require the use of a wire following profiler.


Key test elements:

– Validate performance and behavior of mooring in fully deployed deep ocean conditions

– Mechanical and functional test of SPP– Telemetry– Endurance

– Bi-directional communications with fully integrated system– Controller takes data from WFP then transmits to SPP for iridium

transmission to shore– Controller receives and stores data from SPP– Controller receives commands from SPP via iridium from shore

– Deployment & recovery safety– SPP & Large Flotation Sphere


Mooring Design


Mooring – SPP & Load Cell


Mooring – Flotation Acoustic Release


Mooring – WFP & Controller


Mooring - Lower


Mooring LoadSteady State Launch Tension NO Current Static Tension

Steady State Launch Tension


Mooring Interfaces


Surface Piercing Profiler - SeaCycler

• CommFloat:

Air Wt = 40 lbs Net Buoy = 12

Length = 60” Diameter = 5.3”

• InstFloat:

Air Wt = 510 lbs Net Buoy = 230 lbs

Length = 98” Diameter = 23.5”

• MechFloat:

Air Wt = 4070 Net Buoy = 970 lbs

Length = 160” Diameter = 55”

Instrument Float

Communication Float

Mechanism Float


Wire Following Profiler – McLane

• Weight (air): 155lb• Weight (water): Neutral• Max Depth: 6000m• Battery: Lithium

• Comms: – SeaBird Underwater Inductive Modem


64in Flotation Sphere - WHOI

Buoyancy: ~2400lbs


Tension Bar Load Cell – Sensing Systems

• 17-4PH Passivated Stainless Steel• 10,000lb WLL• Mounting: 5/8” shackle

• OD: 2” Length: 11”

Signal• Output: 0.1 to 5.0 VDC• Input: 8.5 to 28 VDC (12VDC nom)


Load Cell Data Logger

WETLABS• Data Handler: DH-4

– OD: 4in Length: 7in

• Battery Pack: BPA50B


Inductive Terminations

•WHOI


SIO Controller Housing Assembly

• 6061 Aluminum

• Depth Rating: 3000m

• SIO Controller: Persistor Based


Controller Electronics


Load Cell Interface


Acoustic & Inductive Interfaces


Tension Bar Load Cage

•316L Stainless Steel•Length: 59”•Width: 22”•10,000lb WLL•30,000lb Yield•Rated for surface moorings


AST2 Load Cage configuration


Tension Bar Load Cage Payload

Housings•Max Dia: 10”•Max Length: 40”


Acoustic Modem

• Benthos• ATM-887• 12kHz• Omni Directional• 6000m• Anodized Aluminum


Engineering Sensor

• Nortek Aquadopp 6000• Inductive• Depth Rating: 6000m• Measured Parameters

– Mean point velocity– Pressure


XEOS BeaconsIridium

Sable 5000Radio

XMB-7500 Flasher

XMF-7500


Glass Flotation

• Benthos• 17” Glass Sphere• Buoy: 56lbs• Weight: 39lbs


Acoustic Releases

• ORE 8242XS• Release Load: 12,000lb• Weight (air): 79lbs• Weight (water): 62lbs• Depth Rating: 6000m

• WHOI dual acoustic release bracket


Mace Anchor

• WHOI

Documents

AST2 Hypbrid Profiler Mooring PDR Ocean Observatories Initiative Coastal & Global Scale Nodes At Sea Test 2 Hybrid Profiler Mooring Preliminary Design