Chinese Evaluations of the U.S. Navy Submarine Force Gabriel Collins
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Acoustic Sound Level and Sound Intensity Measurements
Acoustic Sound Level and Sound Intensity Measurements SINT Technology s.r.l. Tel: +39.055.8826302 · Fax: +39.055.8826303 · [email protected] · www.sintechnology.com SINT Technology s.r.l. Tel: +39.055.8826302 · Fax: +39.055.8826303 · [email protected] · www.sintechnology.com Acoustic Sound Level and Sound Intensity Measurements Determination of sound power levels of noise sources using sound pressure and sound intensity method Noise is a critical parameter for health and safety and noise exposure must be kept under control. Noise is characteristic of the environment in which we live and is chiefly determined by the presence of man. Whether in a natural environment, a civil or industrial installation, noise requires the intervention of man for it to be kept under control and to limit the impact of noise on daily activities. SINT Technology can provide a wide range of acoustics services, from reliable measurements to analysis of results and comparison with the limits laid down by the law and international standards, to designing solutions to reduce noise. Our services are characterised by: SINT Technology operates in va- the professionalism guaranteed by highly skilled engineering techni- rious areas cians OIL & GAS dynamism and flexibility Energy willingness to perform testing on the customer's plant in all parts of the Rail world Automotive detailed reporting in accordance with the customer's requirements and Civil SINT Technology s.r.l. Tel: +39.055.8826302 · Fax: +39.055.8826303 · [email protected] · www.sintechnology.com Acoustic Sound Level and Sound Intensity Measurements Measurement and analysis of noise in industry and in the workplace The risk of noise hazards depends primarily on the sound power level present in the workplace and on the length of daily exposure. -
Thermal Efficiency and Controlling Noise from Louvered Muffler
International Journal of Scientific Research and Review ISSN NO: 2279-543X THERMAL EFFICIENCY AND CONTROLLING NOISE FROM LOUVERED MUFFLER Shaik.Peerulla Basha1, Dr.s.shakeel Ahamed,MTech,Phd,FIE,MISTE2. 1PG Student, Dept. of Mechanical engineering, Annamacharya institute of technology and sciences, Kadapa, AP, India. 2 professor,Dept. of Mechanical engineering Annamacharya institute of technology and sciences, Kadapa, AP, India ABSTRACT- The muffler is designed to not fiberglass insulation and/or resonating chambers only reduce the noise of the engine, but to reduce harmonically tuned to cause destructive interference back pressure as well. A good muffler can thus wherein opposite sound waves cancel each other improve engine performance. The muffler is out. An unavoidable side effect of muffler use is an engineered as an acoustic soundproofing device increase of back pressure which decreases engine designed to reduce the loudness of the sound efficiency. This is because the engine exhaust must pressure created by the engine by way of acoustic share the same complex exit pathway built inside the quieting. muffler as the sound pressure that the muffler is Louvered mufflers reduce the flow of engine designed to mitigate. Some vehicle owners remove noise with the use of louvers that trap some of the or install an aftermarket muffler when engine tuning sound. Perforated bullet mufflers have a section in order to increase power output or reduce fuel that is perforated to allow sound waves to consumption because of economic or environmental disperse, although it is not very effective in concerns, recreational pursuits such as motorsport reducing engine noise. and hypermiling and/or for personal aesthetic An unavoidable side effect of muffler use is an acoustical preferences. -
Technical Report
NAVAL POSTGRADUATE SCHOOL Monterey, California TECHNICAL REPORT “SEA ARCHER” Distributed Aviation Platform by Faculty Members Charles Calvano David Byers Robert Harney Fotis Papoulias John Ciezki Robert Ashton Student Members LT Joe Keller, USN LCDR Rabon Cooke, USN CDR(sel) James Ivey, USN LT Brad Stallings, USN LT Antonios Dalakos, Helenic Navy LT Scot Searles, USN LTjg Orhan Okan, Turkish Navy LTjg Mersin Gokce, Turkish Navy LT Ryan Kuchler, USN LT Pete Lashomb, USN Ivan Ng, Singapore December 2001 Approved for public release, distribution unlimited REPORT DOCUMENTATION PAGE Form Approved OMB No. 0704-0188 Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instruction, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to Washington headquarters Services, Directorate for Information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302, and to the Office of Management and Budget, Paperwork Reduction Project (0704-0188) Washington DC 20503. 1. AGENCY USE ONLY (Leave blank) 2. REPORT DATE 3. REPORT TYPE AND DATES COVERED December 2001 Technical Report 4. TITLE AND SUBTITLE: 5. FUNDING NUMBERS “Sea Archer” Distributed Aviation Platform 6. AUTHOR(S) Charles Calvano, Robert Harney, David Byers, Fotis Papoulias, John Ciezki, LT Joe Keller, LCDR Rabon Cooke, CDR (sel) James Ivey, LT Brad Stallings, LT Scot Searles, LT Ryan Kuchler, Ivan Ng, LTjg Orhan Okan, LTjg Mersin Gokce, LT Antonios Dalakos, LT Pete Lashomb. -
The Ohio FBM.Pdf
1 The U.S. Navy has 18 of the most deadly and feared weapons ever created. 2 Let’s look at some facts about America’s last line of Defense…the “Boomers”. 3 Meet the Ohio-class submarine. In naval terms, it makes up the Fleet Ballistic Missile submarines (FBMs). 4 Aside from USS Henry M. Jackson (SSBN-730), all of the Ohio-class subs are named after a state. 5 These 18 weapons are also known as “Trident” subs because they’re a part of America’s “Nuclear Triad”. 6 The Nuclear Triad is our Military’s 3-prong nuclear weapons delivery arsenal which covers Land, Air and Sea. 7 Air: Strategic Bombers (the B-52 Stratofortress, B-1 Lancer and B-2 Spirit-pictured above) 8 Land: Intercontinental Ballistic Missiles (ICBMs such as the Minuteman III-pictured above) 9 Why do we have a 3-branches of nuclear capabilities? 10 It reduces the chances that another country’s first-strike attack could destroy all of our nuclear delivery system. 11 This means that, in a worst case scenario (nuclear war)… 12 …America has the ability to launch a second attack. 13 What weapon can lurk anywhere in 2/3rds of the Earth? 14 You got it man, our Ohio-class subs. 15 To be specific, the Earth’s surface is made up of 71 percent ocean water (97% of total water on the planet). 16 Aside from the ocean our subs can also enter fresh water such as our Great Lakes (which already has US Navy’s USS Kentucky SSBN-737 and other smaller Los Angeles-class Attack Submarines). -
Fixed Sonar Systems the History and Future of The
THE SUBMARINE REVIEW FIXED SONAR SYSTEMS THE HISTORY AND FUTURE OF THE UNDEWATER SILENT SENTINEL by LT John Howard, United States Navy Naval Postgraduate School, Monterey, California Undersea Warfare Department Executive Summary One of the most challenging aspects of Anti-Submarine War- fare (ASW) has been the detection and tracking of submerged contacts. One of the most successful means of achieving this goal was the Sound Surveillance System (SOSUS) developed by the United States Navy in the early 1950's. It was designed using breakthrough discoveries of the propagation paths of sound through water and intended to monitor the growing submarine threat of the Soviet Union. SOSUS provided cueing of transiting Soviet submarines to allow for optimal positioning of U.S. ASW forces for tracking and prosecution of these underwater threats. SOSUS took on an even greater national security role with the advent of submarine launched ballistic missiles, ensuring that U.S. forces were aware of these strategic liabilities in case hostilities were ever to erupt between the two superpowers. With the end of the Cold War, SOSUS has undergone a number of changes in its utilization, but is finding itself no less relevant as an asset against the growing number of modern quiet submarines proliferating around the world. Introduction For millennia, humans seeking to better defend themselves have set up observation posts along the ingress routes to their key strongholds. This could consist of something as simple as a person hidden in a tree, to extensive networks of towers communicating 1 APRIL 2011 THE SUBMARINE REVIEW with signal fires. -
Downloaded April 22, 2006
SIX DECADES OF GUIDED MUNITIONS AND BATTLE NETWORKS: PROGRESS AND PROSPECTS Barry D. Watts Thinking Center for Strategic Smarter and Budgetary Assessments About Defense www.csbaonline.org Six Decades of Guided Munitions and Battle Networks: Progress and Prospects by Barry D. Watts Center for Strategic and Budgetary Assessments March 2007 ABOUT THE CENTER FOR STRATEGIC AND BUDGETARY ASSESSMENTS The Center for Strategic and Budgetary Assessments (CSBA) is an independent, nonprofit, public policy research institute established to make clear the inextricable link between near-term and long- range military planning and defense investment strategies. CSBA is directed by Dr. Andrew F. Krepinevich and funded by foundations, corporations, government, and individual grants and contributions. This report is one in a series of CSBA analyses on the emerging military revolution. Previous reports in this series include The Military-Technical Revolution: A Preliminary Assessment (2002), Meeting the Anti-Access and Area-Denial Challenge (2003), and The Revolution in War (2004). The first of these, on the military-technical revolution, reproduces the 1992 Pentagon assessment that precipitated the 1990s debate in the United States and abroad over revolutions in military affairs. Many friends and professional colleagues, both within CSBA and outside the Center, have contributed to this report. Those who made the most substantial improvements to the final manuscript are acknowledged below. However, the analysis and findings are solely the responsibility of the author and CSBA. 1667 K Street, NW, Suite 900 Washington, DC 20036 (202) 331-7990 CONTENTS ACKNOWLEGEMENTS .................................................. v SUMMARY ............................................................... ix GLOSSARY ………………………………………………………xix I. INTRODUCTION ..................................................... 1 Guided Munitions: Origins in the 1940s............. 3 Cold War Developments and Prospects ............ -
Reposturing the Force V
NAVAL WAR COLLEGE NEWPORT PAPERS 26 N A Reposturing the Force V AL U.S. Overseas Presence in the Twenty-first Century W AR COLLEGE NE WPOR T P AP ERS N ES AV T A A L T W S A D R E C T I O N L L U E E G H E T R I VI IBU OR A S CT MARI VI 26 Carnes Lord, Editor Color profile: Generic CMYK printer profile Composite Default screen Cover Preparations for evening flight operations on board the aircraft carrier USS Harry S. Truman (CVN 75) in March 2005. U.S. Navy photo by Photographer’s Mate Airman Ryan O’Connor. T:\Academic\Newport Papers\Newport Paper Lord\Ventura\NPLord.vp Tuesday, February 07, 2006 10:14:03 AM Color profile: Generic CMYK printer profile Composite Default screen Reposturing the Force U.S. Overseas Presence in the Twenty-first Century Carnes Lord, Editor NAVAL WAR COLLEGE PRESS Newport, Rhode Island T:\Academic\Newport Papers\Newport Paper Lord\Ventura\NPLord.vp Tuesday, February 07, 2006 10:14:13 AM Color profile: Generic CMYK printer profile Composite Default screen Naval War College The Newport Papers are extended research projects that the Newport, Rhode Island Editor, the Dean of Naval Warfare Studies, and the Center for Naval Warfare Studies President of the Naval War College consider of particular Newport Paper Twenty-six interest to policy makers, scholars, and analysts. February 2006 The views expressed in the Newport Papers are those of the authors and do not necessarily reflect the opinions of the President, Naval War College Naval War College or the Department of the Navy. -
2016 NAVAL SUBMARINE LEAGUE CORPORATE MEMBERS 5 STAR LEVEL Bechtel Nuclear, Security & Environmental (BNI) (New in 2016) BWX Technologies, Inc
NAVAL SUBMARINE LEAGUE TH 34 ANNUAL SYMPOSIUM SPONSORS L-3 COMMUNICATIONS NEWPORT NEWS SHIPBUILDING-A DIVISION OF HUNTINGTON INGALLS INDUSTRIES GENERAL DYNAMICS—ELECTRIC BOAT GENERAL DYNAMICS—MISSION SYSTEMS HUNT VALVE COMPANY, INC. LOCKHEED MARTIN CORPORATION NORTHROP GRUMMAN NAVIGATION & MARITIME SYSTEMS DIVISION RAYTHEON COMPANY AECOM MANAGEMENT SERVICES GROUP BAE SYSTEMS BWX TECHNOLOGIES, INC. CURTISS-WRIGHT CORPORATION DRS TECHNOLOGIES, MARITIME AND COMBAT SUPPORT SYSTEMS PROGENY SYSTEMS, INC. TREADWELL CORPORATION TSM CORPORATION ADVANCED ACOUSTIC CONCEPTS BATTELLE BOEING COMPANY BOOZ ALLEN HAMILTON CEPEDA ASSOCIATES, INC. CUNICO CORPORATION & DYNAMIC CONTROLS, LTD. GENERAL ATOMICS IN-DEPTH ENGINEERING, INC. OCEANEERING INTERNATIONAL, INC. PACIFIC FLEET SUBMARINE MEMORIAL ASSOC., INC. SONALYSTS, INC. SYSTEMS PLANNING AND ANALYSIS, INC. ULTRA ELECTRONICS 3 PHOENIX ULTRA ELECTRONICS—OCEAN SYSTEMS, INC. 1 2016 NAVAL SUBMARINE LEAGUE WELCOME TO THE 34TH ANNUAL SYMPOSIUM TABLE OF CONTENTS SYMPOSIUM SPEAKERS BIOGRAPHIES ADM FRANK CALDWELL, USN ................................................................................ 4 VADM JOSEPH TOFALO, USN ................................................................................... 5 RADM MICHAEL JABALEY, USN ............................................................................. 6 MR. MARK GORENFLO ............................................................................................... 7 VADM JOSEPH MULLOY, USN ................................................................................. -
The Case of the Ile De France Region Presentation of Bruitparif
The case of the Ile de France region Presentation of Bruitparif T&E conference, Quiet Please the future of EU noise Policy, 25 May 2011 Piotr Gaudibert Agenda ¾ Presentation of Bruitparif and context of the Ile-de-France region (Paris region) ¾ First results of noise assessment in Ile- de-France region in application of the END ¾ Actions in Ile-de-France region to fight road traffic noise ¾ Questions about the different ways to reduce noise at the source: example of the Paris action plan The Ile-de-France region ~ 11 million inhabitants = 19 % of the French population, ~ 30 % of the GNP characterised by the population ~ 12 000 km2 density of the Paris agglomeration : 87 % of inhabitants (9,75 millions) live in 23 % of the region’s area Inhabitants density Inhabitants/km2 area directly concerned by the END The Ile-de-France region ¾ Characterised by the number and density of infrastructures: ¾ More than 40,000 km of roads ¾ More than 1800 km of railways ¾ A unique aircraft system in Europe based on two international airports (Roissy CDG 544 000 mvts and Orly 233 000 mvts in 2007) + civil airfield of Le Bourget (58 000 mvts in 2005) and heliport of Issy-les-Mx + ~20 small airfields What is Bruitparif? ¾ A regional agency for assessing and monitoring noise in the Ile-de-France Region ¾ Created in october 2004 ¾ Coming into force at the end of year 2005 ¾ Reasons for creation: Noise = one of the major concerns for inhabitants of the Ile- de-France region Multiplicity of actors involved in noise management Lots of noise data but no common -
Navy Readiness: Actions Needed to Address Costly Maintenance Delays Facing the Attack Submarine Fleet
United States Government Accountability Office Report to the Subcommittee on Readiness, Committee on Armed Services, House of Representatives November 2018 NAVY READINESS Actions Needed to Address Costly Maintenance Delays Facing the Attack Submarine Fleet GAO-19-229 November 2018 NAVY READINESS Actions Needed to Address Costly Maintenance Delays Facing the Attack Submarine Fleet Highlights of GAO-19-229, a report to Subcommittee on Readiness, Committee on Armed Services, House of Representatives Why GAO Did This Study What GAO Found According to the Navy, its 51 attack The Navy has been unable to begin or complete the vast majority of its attack submarines provide the United States submarine maintenance periods on time resulting in significant maintenance an asymmetric advantage to gather delays and operating and support cost expenditures. GAO’s analysis of Navy intelligence undetected, attack enemy maintenance data shows that between fiscal year 2008 and 2018, attack targets, and insert special forces, submarines have incurred 10,363 days of idle time and maintenance delays as a among others. These capabilities make result of delays in getting into and out of the shipyards. For example, the Navy attack submarines some of the most– originally scheduled the USS Boise to enter a shipyard for an extended requested assets by the global maintenance period in 2013 but, due to heavy shipyard workload, the Navy combatant commanders. delayed the start of the maintenance period. In June 2016, the USS Boise could GAO was asked to review the no longer conduct normal operations and the boat has remained idle, pierside for readiness of the Navy’s attack over two years since then waiting to enter a shipyard (see figure). -
Title Catalogue 1977-1978 Publisher
Author(s) Naval Postgraduate School (U.S.) Title Catalogue 1977-1978 Publisher Monterey, California. Naval Postgraduate School Issue Date 1977 URL http://hdl.handle.net/10945/31688 This document was downloaded on May 22, 2013 at 14:29:51 CATALOGUE 1977-1978 NAVAL POSTGRADUATE SCHOOL ; MONTEREY . CALIFORNIA MISSION The Secretary of the Navy has defined the mission of the Naval Post- graduate School as follows: "To conduct and direct the Advanced Education of commissioned officers, and to provide such other technical and professional instruction as may be prescribed to meet he needs of the Naval Service; and in support of the foregoing, to foster and encourage a program of research in order to sustain academic excellence." CALENDAR CALENDAR FOR 1977-78 ACADEMIC YEAR JANUARY JULY 1 1 2 2 3 4 5 6 7 8 3 4 5 6 7 8 9 9 10 11 1? 13 14 IS 10 11 12 13 14 15 16 16 17 It 19 20 21 22 17 18 19 20 21 22 23 1977 23 24 25 26 27 28 29 24 25 26 27 28 29 30 30 31 31 FEBRUARY AUGUST Registration Monday, 27 June 12 3 4 5 12 3 4 5 6 7 8 9 10 11 12 13 Fourth of July (holiday) Monday, 4 July 6 7 8 9 10 11 12 14 15 17 18 13 14 15 16 17 It 19 16 19 20 21 22 23 24 25 26 27 Summer Quarter begins Tuesday, 5 July 20 21 22 23 24 25 26 27 28 28 29 30 31 Refresher Course begins Monday, 15 August MARCH September Labor Day (holiday) Monday, 5 September 1 2 3 12 3 4 5 4 5 6 7 8 9 10 6 7 8 9 10 11 12 Examination Week for Summer Quarter 19-22 September 11 12 13 14 15 16 17 13 14 15 16 17 18 19 18 19 20 21 22 23 24 20 21 22 23 24 25 26 Summer Quarter ends Thursday, 22 September -
Canc Frp: Apr 2013
Canc frp: Apr 2013 OPNAVNOTE 5450 Ser N1/121028 10 APR 2012 OPNAV NOTICE 5450 From: Chief of Naval Operations Subj: SEQUENTIAL AND MAJOR COMMAND LISTS Encl: (1) FY-12 to FY-16 Sequential Command List (2) FY-12 to FY-16 Major Sea Command List (3) FY-12 to FY-16 Major Shore Command List (4) FY-12 to FY-16 Major Defense Attaché List 1. Purpose a. To publish the fiscal year (FY) 2012 (FY-12) to FY 2016 (FY-16) sequential command, major command and major Defense Attaché lists. b. To establish the membership and responsibilities of the Major Command Review Board (MCRB). c. To publish procedures for submitting requests for changes to the sequential and major command lists. 2. Background. The designation of unrestricted line (URL) and certain restricted line (RL) O-6 command billets as major sea or major shore commands are required to ensure that the most qualified individuals are placed in these demanding billets. Officers selected for major command are recognized for their proven managerial and technical expertise, professional qualifications, and exceptional leadership ability. 3. MCRB a. Membership. The MCRB shall consist of the following members: (1) Office of the Chief of Naval Operations (OPNAV) Director, Military Personnel Plans and Policy Division (N13) (co-chair); OPNAVNOTE 5450 10 APR 2012 (2) Commander, Navy Personnel Command (co-chair); (3) Director, Expeditionary Warfare Division (OPNAV (N95)); (4) Director, Surface Warfare Division (OPNAV (N96); (5) Director, Submarine Warfare Division (OPNAV (N97)); (6) Director, Air Warfare Division (OPNAV (N98)); (7) Commander, Naval Surface Force, U.S. Atlantic Fleet; (8) Commander, Naval Air Force, U.S.