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Deepwater Project Bofors Defence 57-mm L/70 Mk 3 Gun System System Engineering

This presentation covers the integration of system engineering elements for the Deepwater Gun Weapon System for the United States Coast Guard (USCG). It includes analysis, certification, logistics, and mission requirements, emphasizing the transformation of mission needs into an effective system solution. The involvement of various agencies and the detailed analysis of alternative gun options are highlighted, showcasing the collaborative effort to meet USCG and USN mission objectives.

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Deepwater Project Bofors Defence 57-mm L/70 Mk 3 Gun System System Engineering

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  1. Deepwater ProjectBofors Defence 57-mm L/70 Mk 3 Gun SystemSystem Engineering LT Tim Hackett USCG Deepwater (G-OCD) (202) 267-0643 THackett@comdt.uscg.mil Eric L. Waggoner, P.E. NSWC PHD Louisville (G42) (502) 364-5239 WaggonerEL@nswcl.navy.mil James F. McConkie NSWC Dahlgren (G32) (540) 653-7861 McConkieJF@nswc.navy.mil Frederick G. Wagoner NSWC PHD Louisville (G30.1) (502) 364-5135 WagonerFG@nswcl.navy.mil

  2. Introduction of System Engineering Project for the USCG Requirements, Missions and the Deepwater IPT National Security Cutter 57mm L/70 Mk 3 Gun Introduction Logistics Demonstration Engineering Analysis Gun Certification System Engineering Deepwater Presentation

  3. The transformation of missions and operational needs and requirements into an integrated system solution with concurrent understanding of the entire life-cycle needs and processes (i.e. to demonstrate, integrate, verify and test, produce and field a [weapon] system for the Government in our case, the USCG and USN). Ensure the compatibility, interoperability and integration of all functional and physical interfaces and ensure system definition and design reflect the requirements of all system elements. This presentation will review the system engineering elements of the Deepwater Gun Weapon System for the U. S. Coast Guard. System Engineering

  4. NSWC PHD/L asked to do Mission Analysis and an Analysis of Alternatives with UDLP 5-inch, 76mm, 57mm, 40mm guns considered along with MK 160 GCS and MK 46 MOD 1 EOSS NSWC PHD/L participated in Deepwater IPT and AoA with USCG, NSWC/DD and OPNAV Mission Area and Threat Analysis Requirements TOC Analysis Deepwater IPT

  5. Deepwater Objectives WHEC Block Obsolescence 12 WMEC Increasing Logistics Demands 29 Capability Gap WPB 49

  6. USCG Wartime & Contingency Ops: 1917-2000 Cuban Missile Crisis 1999 Adriatic Vietnam Desert Storm Drug War 1980 Cuba 1994 Cuba 1994 Haiti Source: CAN CRM 96-93 WW I Prohibition Korea WW II Convoy/Escort Surveillance/ Interdiction SAR Ops Ocean/ Weather Patrol Command Ship Ice/Polar Ops NSFS Ops

  7. No organized military threat • Possible guerilla or terrorist activity • Hand-held weapons or grenades • No sophisticated military vehicles, ships or aircraft NEG • Small and relatively ill-equipped military • Some coastal patrol craft, possible medium caliber gun • Few, ASCM • Hand held missiles LOW MED • Considerable, fairly well organized military power • Airborne and surface units with radar and weapons coverage well off shore • Substantial number of ASCM’s • Possible submarine capabilities • Advanced military power • Excellent radar and weapons coverage well off shore • Possible access to space-based recon & intel capabilities • Large number of ASCM’s • Advanced submarine capabilities Mission Area Analysis for NSC EO/IR/LLLTV Radar TASKS Gun Missile SAR Decoy Jam Credible threat absent Search/ Detect/ID Law Enforcement Threaten/Disable Search/ Detect/ID General Defense Threaten/Disable Sea Control Deployed Port Operations Engage Anti-Piracy Decoy Maritime Intercept Ship Escort Search/ Detect/ID Naval Surface Fire Support Threaten/Disable Engage Non-Combatant Evacuation Ops Decoy Supporting Fires HIGH USCG employment in this environment atypical Threat overmatches expected IDS capabilities Long term survival doubtful

  8. Low Threat Environment Weapons Cigarette Boat (Type 4, Ashoora) Trawler Fast Attack Craft Boston Whaler Boghammar 8 m 6.7 m 59 m Size (length) 26 m 13 m Speed (knots) 40+ 40+ 15 35 - 40 46 Manning 2 - 3 4 12 - 17 5 - 6 38 Small arms 7.62 mm MG RPG - 7 12.7 mm MG 107 mm MRL 106 mm Recoilless Rifle RPG - 7 12.7 mm MG 107 mm MRL Shouldering, small arms, frozen fish 14.5mm or 23mm MG 12 barrel 107mm rocket launcher Weapons Weapons Range 200+ m 800 - 1000 m 200 - 1000 m 200 - 1000 m limited

  9. NTNO NTNO B/L D B/L D USCG Desired NSC ConfigurationNT/NO w/ SLQ32 SEWIP and 2nd Surv. EO/IR SPS 73 X-Band Surf. Search Radar (Furuno) SRBOC + Nulka Communications SAOP SPS 73 X-Band CIWS Block 1B SPQ-9B CGC2 Surv. Radar Gun SPQ-14 57mm L/70 Mk 3 Gun Mount MK 160 GFCS IFF UPX-36 Interrogator System Adv. Sensor Dist. Sys RDF–TC 8520 • Support • Aviation • Cutter • ILS SSES SLQ-32 Surv. Radar CG Funded EADS TRS 3D/16ES EO/IR Surveillance FLIR EO/IR Mk 46 Sighting SAOP = Stand Alone Operator Position 10

  10. The National Security Cutter (NSC) Navy Type/Navy Owned Equipment ASCM Defense Radar SPQ-9B Air & Surface Radars TRS 3D / SPS 73 SLQ 32 Surveillance EO/IR CIWS B1B Mk 46 MOD 1 EO/IR 57mm Gun Mk 53 SRBOC w/ Nulka

  11. BASELINE CONFIGURATION Gun Support Room 57mm mounted on 01 Level 57mm Magazine • 57mm L/70 Mk 3 Gun Selected for main battery for NSC • Gun is mounted on 01 Level, approximately frame 18 • Gun Support Room is located on Main Deck, below Gun • 57mm Magazine is located on Second Deck, below Gun Support Room Preliminary

  12. 57mm L/70 Mk 3 Gun Mount • Mk 3 Gun in full production for Swedish, Finnish and Mexican Navy, under consideration for upgrade from Mk 2 to Mk 3 by Canadian Navy. • General Characteristics • Manufacturer: UDLP/Bofors Defence • Weight: 6800 kgs • 120 rounds ready service ammo • 220 round/minute firing rate • Range: 17,000 meters using HCER ammunition • Barrel life: 5300 rounds • Power: 440VAC, 3 Phase, 60 Hz 57mm Mk 3 Gun w. standard copula Low RCS weathershield available

  13. Gun Magazine Muzzle Velocity Radar (MVR) Loading Cassette Intermediate Magazine TV Camera (TVC) Hydraulic Speed GearElevation Oil Tank Base Ring Slip Ring Unit Deepwater GWS Gun Mount

  14. GLU GCP FCS TBD 1553B Bus A 28VDC Power for all logic signals 1553B Bus B Control and Logic System

  15. Ammunition Loading System • 2 identical independent systems • Transports the ammunition from the ship magazine to the gun magazine • 2 separate systems allow two types of ammunition simultaneously in the gun • Automatic Reloading • Controlled and operated from GCP/GCC or from the gun FCS

  16. NSWC PHD Louisville and UDLP performed a Logistics Demonstration and Engineering Analysis to determine potential problems for fielding foreign intermediate caliber gun system. Logistics Demonstration and Engineering Analysis

  17. Logistics Demo Goals For the Mk 3 57mm, Assess: Safety related content of technical data provided by Bofors Completeness of Technical Manuals provided Correctness and completeness of maintenance tasks Logistics support package provided by Bofors Common and Peculiar Support Equipment, Special Tools & Test Equipment Cross reference Petroleum, Oil and Lubricants to domestic equivalents Provided Maintenance Requirement Cards (MRCs) for compatibility with U.S. Coast Guard and U.S. Navy requirements Need for training materials and changes to Bofors data to meet current standards Maintenance Tasks and the assigned levels (O, I or D) Logistics Demonstration

  18. LOGISTICS DEMO • Review of Mk 3 57mm Technical Manuals • Review of Mk 3 57mm Training Course Materials • OEM Familiarization training review • O and I-Level Preventive Maintenance Tasks • O and I-Level Corrective Maintenance Tasks • Major Component Replacement Tasks • Final Evaluations and comments have been assembled into a Logistics Demonstration Report 57mm Mk 3 Gun being unpackaged and removed from shipping container in “A” Building, UDLP Louisville KY. The Gun and Lifting Fixtures are from Swedish Navy and normally used with Stealth Weathershield configuration for HMS VISBY.

  19. LOGISTICS DEMO ANALYSIS Logistics Elements Design Interface – by Examination, Test and Demonstration Manpower and Personnel - by Examination, Test and Demonstration Training - by Examination, Test and Demonstration Maintenance - by Examination, Test and Demonstration Supply Support – by Analysis Support and Test Equipment - by Examination, Test and Demonstration Technical Data – CALS- by Analysis Configuration Management – (NOT PART OF LOG DEMO) Computer Resources – by Analysis and Examination Environmental, Safety and Occupational Health - by Examination, Test and Demonstration Packaging, Handling, Storage & /Transportation – (NOT PART OF LOG DEMO) Facilities – (NOT PART OF LOG DEMO) ILS Management –by Analysis Click here for description of results of logistics elements.

  20. Notes from Logistics Demonstration • Ability to perform tasks greatly enhanced by laptop computer based gun mount testing applications • A gun mount testing (GMT) laptop similar to the GCP shown at right and Gun Laying Unit (GLU) performs all these functions. This unit uses a PCMCIA 1553 card to interface to the GCC. • All items previously performed using Dummy Directors and chart recorders are programmed into GMT. • What used to take three days of I-level tasks can now be performed in a few hours. Bofors supplied gun control panel (GCP) and gun laying unit (GLU). These items are on the MIL-STD-1553B bus and interface directly with the gun control computer (GCC) in the gun. Two GCPs can be connected on the bus along with FCC. Normally, a GCP and GLU are on the bridge or pilot house.

  21. Engineering Assessment goals Examine the 57mm Mk 3 Gun for areas of concern (safety, RM&A, other engineering shortcomings). Make recommendations to the USCG (and Bofors Defence) for correction or consideration. Engineering Assessment

  22. Maintenance Tasks Factory Acceptance Test (FAT), Pre-FAT, HAT Establishes gun performance baseline, verify gun condition Performed water intrusion tests on gun port shield Endurance Tests Perform endurance tests based upon anticipated operational profile of Mk 3 gun in use by the U. S. Coast Guard and previous experience with MK 75. Check for gun laying system (power-drive) temperatures extremes, system failures or weaknesses that will impact USCG missions. Safety Assessment During entire evolution and independently, evaluate gun for safety concerns (results feed into System Safety Working Group). ORDALT Assessment Based upon previous logistics demonstration, endurance tests and safety assessment, what engineering change proposals or ORDALTs would be required to field this gun mount with the USCG? Engineering Assessment

  23. Simulated one year service use according to USCG mission profile, including 120 days of forward deployment and daily pre-fire checks Checked for system degradation via comparison of pre-test and post-test FATs, spectrochemical analysis of oil samples, and temperature data Tests performed by UDLP and Bofors Defence personnel, always in presence of ISEA personnel Non-firing tests only; follow-on gun qualification plan to include firing exercises when gun is shipped to Dahlgren Includes Water Intrusion Test Endurance Test

  24. Water Intrusion Test • Measure level of water intrusion on: • Weathershield and gun port seal • Base ring seal • Empty case ejection chute • BAE Muzzle velocity radar (MVR) • Access hatches • Ventilation aperture • Train warning speaker • Thales TVC submergence tested IAW MIL-STD-108E Gun Port Shield Water Intrusion Test

  25. Safety Analysis Review of Aiming and Firing Limits Reliability Predictions and FMECA Data generated by Bofors for the Swedish Navy, Mexican Navy, or historical data (Mk 1, Mk 2, Mk 3) leveraged Bofors data translated from Swedish to English Analysis could later be used in qualifying the Mk 3 to the WSESRB prior to U.S. Navy use Reliability and Hazard Analysis

  26. Single Point Failures during specific events Misaimed firing Double ramming Firing in a non-pointing zone Accidental firing All safety-related variables in the Gun Control Computer are put in memory areas under a “check sum” control routine; no values can be changed without the routine immediately commanding an emergency stop of the GCC and gun Analysis shows that no single point failures can result in one of these critical events Safety Analysis

  27. Aiming and Firing Limits are stored in the Gun Control Computer (GCC); can be reprogrammed using special equipment to conform to a different pattern required by the ship The GCC prevents firing/aiming if the gun receives control signals to send the barrel into a firing/aiming-limited area Aiming & Firing Limits

  28. MTBF data received from Bofors; much of the reliability info comes from Mk 2 maintenance records; MIL Handbook 217 used for any parts w/no historical data FMECA analysis investigates catastrophic occurrences (intolerable risk) expected during the service life of the gun system. Reliability Predictions and FMECA

  29. Hazard Risk Index Matrix

  30. ORDALT Analysis conducted with input from ISEA, USCG, UDLP, and Bofors personnel Recommendations were accumulated during a focused analysis period in March and during the Operator’s Training Course, Logistics Demonstration, Endurance Test and Safety Assessment conducted at NSWC PHD Louisville and United Defense Louisville. Analysis identified (20) recommended modifications to the 57mm Mk 3 to field this gun mount with the USCG Also considered required changes to meet U.S. Navy standards in preparation for possible future use in the U.S. Navy ORDALT Assessment

  31. NSWC PHD/L ISEA developed misfire flowchart based upon Swedish Navy and Bofors Defence procedures All events will be reviewed and amended during gun and ammunition qualifications at NSWC Dahlgren. Will revisit in upcoming SSWGs Misfire Procedures Review

  32. NSWC - System Safety Program Management Principal for Safety is Fred Hartley (NSWCDD) Lead Safety Engineer is Dan Holmes (NSWCPHD/L) NSWCDD - Technical Direction Agent (TDA) and Gun/Ammo System Integration Agent (SIA) for the program NSWCPHD/L - Acquisition Engineering Agent (AEA) and In-Service Engineering Agent (ISEA) NAVSEA PM4 - Ammo management and procurement GWS Qualification Program Lead Activities

  33. GWS Qualification Schedule

  34. System Safety Program Plan (SSPP) System Safety Working Group (SSWG) Charter Threat Hazard Assessment (THA) Fault Tree Analysis (FTA) Preliminary Hazard Analysis (PHA) Operating & Support Hazard Analysis (O&SHA) System Hazard Analysis (SHA) Software Safety and Hazard Analysis System Safety Program

  35. Chairman Principal for Safety F. Hartley Vice-Chairman System Engineer J. Holmes NSWC PHD/L NSWCDD USCG Fleet Rep AEA/ISEA TDA/SIA CWO D. Jones E. Waggoner J. McConkie SSWG Working Group Advisory Board *As required System Safety Program • SSWG

  36. Environmental Concerns Programmatic Environmental Safety and Health Evaluations Hazardous materials, ammunition, pollution prevention Surveillance / Demil Disposal Plans EOD & NMD Documentation Ammo Insensitive Munitions Tests HERO, EMV, EMC & ESD Testing Performance Oriented Packaging (POP) Certification Testing GWS Hot Gun procedures based upon Cook-off Test Plan Explosive Hazard Classification / Qual Tests Configuration Management Plan for the Gun & Ammo System Safety Program

  37. System Engineering of 57mm MK 3 Gun Involves Many Aspects Requirements 57mm L/70 Mk 3 Gun meets USCG requirements for NSC mission Logistics elements in place but need refinement Technical manuals, other data elements need refinement to USN/USCG standards System design makes distant support easy Life-cycle support thought of from the start Safety Gun and Ammunition WSESRB Qualification will thoroughly examine safety of the system System Engineering approach makes total system safety and effectiveness a success. System Engineering Conclusions

  38. Questions?

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