scholarly journals A Mechanical Start System for U. S. Navy Destroyer Generator Sets

1997 ◽  
Author(s):  
Leonard L. Overton ◽  
William E. Masincup ◽  
Jack E. Halsey
Keyword(s):  
High Pressure ◽  
Pressure Regulator ◽  
Ship Construction ◽  
Turbine Generators ◽  
Air Turbine ◽  
Turboshaft Engine ◽  
Generator Sets ◽  
Naval Surface Warfare ◽  
The U.S ◽  
Reliability And Availability

A mechanical start system has been developed to start the Ship’s Service Gas Turbine Generators (SSGTG) on board U.S. naval destroyers. The current starting system uses either stored high pressure air or bleed air from another running turbine. The U.S. Navy has reviewed the high pressure air system and found it to be a costly system for both ship construction and maintenance. As a result, the Navy is requiring an alternative starting method that will replace high pressure air. It should be noted that any alternative that introduces compressed air to start the SSGTG depends on the start air regulating assembly and the pneumatic starter. The Redundant Independent Mechanical Start System (RIMSS) consists of an Allison Model 250 turboshaft engine mounted above the SSGTG main reduction gearbox. The turboshaft power take off is connected to the pinion shaft of the reduction gearbox by means of a parallel shaft auxiliary transfer gearbox. The transfer gearbox connection to the reduction gearbox replaces the pneumatic starter adapter pad but provides a means to also connect the pneumatic starter. As a result, the pinion shaft can be driven either pneumatically by the air turbine or mechanically by the Model 250 engine. This provides an alternative starting mode which is totally independent of the present means of starting. This will increase the reliability and availability of the SSGTG since it can still be started even if the pressure regulator or the pneumatic starter is not functional. This system has undergone testing at the Naval Surface Warfare Center Carderock Division facility in Philadelphia.

Testing an APU for Potential Service Aboard a U.S. Naval Destroyer

1994 ◽  
Author(s):  
George W. Francis
Keyword(s):  
High Pressure ◽  
Gas Turbine ◽  
Life Cycle Management ◽  
Signal Model ◽  
Turbine Generator ◽  
Auxiliary Power ◽  
Broad Array ◽  
Auxiliary Power Units ◽  
Generator Sets ◽  
Naval Surface Warfare

Incentives exist for replacing ships high pressure gas turbine emergency start air systems with auxiliary power units (APUs). The Allied Signal, Model GTCP 100-82 is one option. It is currently used in Naval aircraft start carts. Interest has been kindled in a shipboard application primarily for emergency starting Ship Service Gas Turbine Generator Sets. This APU is tested at the Naval Surface Warfare Center Carderock Division facility in Philadelphia. The target ships for this application is the future addition to the DDG-51 Class, AEGIS Destroyers. Advantages from both financial and life cycle management perspectives are expected from standardized air and sea service. This APU application concept, and variations of it, are overtly suited to a broad array of similar installations.

Improving Operational Availability of Gas Turbine Generators Aboard U.S. Navy DDG-51 Class Ships by Combining the Capabilities of the Integrated Condition Assessment System (ICAS) and the Generator Set’s Full Authority Digital Controller (FADC)

2005 ◽  
Author(s):  
Dennis M. Russom ◽  
Russell A. Leinbach ◽  
Helen J. Kozuhowski ◽  
Dana D. Golden
Keyword(s):  
Life Cycle ◽  
Gas Turbine ◽  
Condition Assessment ◽  
Assessment System ◽  
Digital Controller ◽  
Life Cycle Costs ◽  
Turbine Generator ◽  
Turbine Generators ◽  
Generator Sets ◽  
The U.S

Operational availability of Gas Turbine Generator Sets (GTGs) aboard the U.S. Navy’s DDG 51 Class ships is being enhanced through the combined capabilities of the ship’s Integrated Condition Assessment System (ICAS) and the GTG’s Full Authority Digital Control (FADC). This paper describes the ICAS and FADC systems; their current capabilities and the vision of how those capabilities will evolve in order to improve equipment readiness and reduce life cycle costs.

Navy High-Pressure Waterjet Closed-Loop Paint Stripping System

1996 ◽  
Vol 12 (01) ◽  
pp. 59-66
Author(s):  
John Williams ◽  
Robert M. Rice
Keyword(s):  
High Pressure ◽  
Air Force ◽  
New Techniques ◽  
Safety Standards ◽  
Marine Coatings ◽  
Pressure Water ◽  
Paint Stripping ◽  
The Cost ◽  
Naval Surface Warfare ◽  
The U.S

The marine refurbishment industry currently utilizes abrasive blasting for hull coatings removal. These processes generate extreme amounts of waste material, which must be contained and disposed of properly. The cost of containment, the hazardous work environment and the amounts of hazardous waste produced are all significant disadvantages of the existing processes. Additionally, environmental regulations and safety standards are being introduced which demand new techniques for marine coatings removal. In light of these factors, the U.S. Navy's Naval Surface Warfare Center-Carderock Division entered into a joint initiative with the U.S. Air Force to introduce an alternative paint and marine growth removal method, including complete effluent recovery at the source. This system, using only high-pressure water, is semi-automatic and mobile. The system can operate independently in a dry dock without external utilities. In the end, the system will eliminate the current problems associated with coatings removal and reduce the overall operational costs.

Alternative Starting Methods for Shipboard Gas Turbine Generators

1997 ◽  
Author(s):  
William E. Masincup ◽  
Scott Jackson
Keyword(s):  
High Pressure ◽  
Gas Turbine ◽  
Alternative Methods ◽  
Turbine Generators ◽  
The U.S

The U.S. Navy has long been searching for ways to remove the piping, valves and machinery associated with High Pressure air systems on its ships. This paper discusses alternative methods of starting Ship Service Gas Turbine Generators in order to eliminate these engines as users of HP air.

Development, Testing, and Implementation of a Gas Turbine Starting Clutch With Manual Turning Feature for U.S. Navy Ships

2006 ◽  
Vol 129 (3) ◽  
pp. 785-791 ◽  
Author(s):  
Morgan L. Hendry ◽  
Matthew G. Hoffman
Keyword(s):  
Gas Turbine ◽  
Operating Experience ◽  
Turbine Rotor ◽  
Turbine Generator ◽  
Rotor Rotation ◽  
Turbine Generators ◽  
Generator Sets ◽  
The U.S

Most gas turbine generators rely on an automatic-engaging, free-wheel clutch to connect a starting motor to accelerate the gas turbine generator from zero to some intermediate speed to enable ignition and then provide torque assistance to a higher speed until the gas turbine is self-sustaining. The U.S. Navy has used various designs of starter motors and clutches for its gas turbine fleet. In addition, there has been a requirement to periodically borescope each gas turbine, which has necessitated removal of the starting system and clutch assembly in each instance. This paper examines the U.S. Navy experience with starting clutches and provides details of the development and testing of a synchronous-self-shifting clutch with an additional, stationary, manual turning feature to provide very slow and precise gas turbine rotor rotation for borescope purposes. This paper also gives details of the installation of the first two prototype clutches on the USS Ramage, DDG 61, operating experience for approximately four years, and possible future installations of this type of clutch in U.S. Navy gas turbine generator sets.

Development, Testing and Implementation of a Gas Turbine Starting Clutch With Manual Turning Feature for U.S. Navy Ships

2006 ◽  
Author(s):  
Morgan L. Hendry ◽  
Matthew G. Hoffman
Keyword(s):  
Gas Turbine ◽  
Operating Experience ◽  
Turbine Rotor ◽  
Turbine Generator ◽  
Rotor Rotation ◽  
Turbine Generators ◽  
Generator Sets ◽  
The U.S

Most gas turbine generators rely on an automatic-engaging, free-wheel clutch to connect a starting motor to accelerate the gas turbine generator from zero to some intermediate speed to enable ignition and then provide torque assistance to a higher speed until the gas turbine is self-sustaining. The U.S. Navy has used various designs of starter motors and clutches for its gas turbine fleet. In addition, there has been a requirement to periodically borescope each gas turbine and this has necessitated removal of the starting system and clutch assembly in each instance. This paper examines the U.S. Navy experience with starting clutches and provides details of the development and testing of a synchronous-self-shifting clutch with an additional, stationary, manual turning feature to provide very slow and precise gas turbine rotor rotation for borescope purposes. This paper also gives details of the installation of the first two prototype clutches on the USS Ramage, DDG 61, operating experience for approximately four years, and possible future installations of this type of clutch in U.S Navy gas turbine generator sets.

Engineering Management for Zone Construction of Ships

1985 ◽  
Vol 1 (04) ◽  
pp. 266-287
Author(s):  
Thomas Lamb
Keyword(s):  
Engineering Management ◽  
Shipbuilding Industry ◽  
Ship Construction ◽  
Production Department ◽  
Engineering Department ◽  
Traditionally Prepared ◽  
Hard Times ◽  
Long Time ◽  
The U.S ◽  
Do So

Zone construction has been proposed as the way for the U.S. shipbuilding industry to improve its productivity and survive the current hard times. Obviously as the production requirements for zone construction are different from traditional ship construction, so are the engineering requirements. While production could perform zone construction from traditionally prepared engineering, it would do so inefficiently and after waiting a long time for most of the engineering to be completed before they could start, thus defeating one of the goals of zone construction. The production department in a shipyard changing to zone construction will probably reorganize into major zone sections. To obtain maximum benefits from zone construction it is necessary for the engineering department to be like-organized and managed. The paper therefore discusses engineering aspects that are influenced by the change to zone construction

Modeling the behavior of Listeria innocua in Italian salami during the production and high-pressure validation of processes for exportation to the U.S.

Meat Science ◽  
2021 ◽  
Vol 172 ◽  
pp. 108315
Author(s):  
Paolo Bonilauri ◽  
Giuseppe Merialdi ◽  
Mattia Ramini ◽  
Lia Bardasi ◽  
Roberta Taddei ◽  
...  
Keyword(s):  
High Pressure ◽  
Listeria Innocua ◽  
The U.S

scholarly journals My Career as a Mineral Physicist at Stony Brook: 1976–2019

Minerals ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 761
Author(s):  
Robert Cooper Liebermann
Keyword(s):  
High Pressure ◽  
Graduate Students ◽  
High Pressures ◽  
Physics Institute ◽  
Faculty Position ◽  
Mineral Physics ◽  
Princeton University ◽  
Structural Analogues ◽  
High Pressures And Temperatures ◽  
The U.S

In 1976, I took up a faculty position in the Department of Geosciences of Stony Brook University. Over the next half century, in collaboration with graduate students from the U.S., China and Russia and postdoctoral colleagues from Australia, France and Japan, we pursued studies of the elastic properties of minerals (and their structural analogues) at high pressures and temperatures. In the 1980s, together with Donald Weidner, we established the Stony Brook High Pressure Laboratory and the Mineral Physics Institute. In 1991, in collaboration with Alexandra Navrotsky at Princeton University and Charles Prewitt at the Geophysical Laboratory, we founded the NSF Science and Technology Center for High Pressure Research.

scholarly journals Gemini T-20G-8 XM1 Tank APU

1981 ◽  
Author(s):  
C. Rodgers ◽  
J. Zeno ◽  
E. A. Drury ◽  
A. Karchon
Keyword(s):  
Gas Turbine ◽  
Power Unit ◽  
Weather Conditions ◽  
Cold Weather ◽  
Turbine Engine ◽  
Auxiliary Power Unit ◽  
Auxiliary Power ◽  
Generator Sets ◽  
Main Engine ◽  
The U.S

Auxiliary power is often provided on combat vehicles in the U.S. Army for battery charging, operation of auxiliary vehicle equipment when the main engine is not running, or to provide assistance in starting the main engine in extreme cold weather conditions. The use of a gas turbine for these applications is particularly attractive, due to its small size and lightweight. In November 1978, the U.S. Army Tank-Automotive Research and Development Command, Warren, MI awarded a contract to the Turbomach Division of Solar Turbines International, San Diego, CA, for the development of a 10 kW 28 vdc gas turbine powered auxiliary power unit (APU) for installation in the XM1 main battle tank. This paper describes the general features of the Solar Turbomach T-20G-8 Auxiliary Power Unit, a single-shaft gas turbine driven generator set which has been developed under this contract. This APU is one of the family of Gemini powered APUs and is a derivative of the U.S. Army 10 kW gas turbine engine-driven, 60 and 400 Hz generator sets developed by Solar. The electrical components were newly developed for this particular application. Currently, the APU is in qualification testing both in the laboratory and in the XM1 main battle tank.

Sign in / Sign up

Export Citation Format

Share Document