Metal-ammonia MHD - A compact high-power marine propulsion engine

Propulsion Gear Units for Gas Turbine Naval Installations

Volume 1A: General ◽

10.1115/76-gt-26 ◽

1976 ◽

Cited By ~ 1

Author(s):

J. Hepper

Keyword(s):

Steam Turbine ◽

Gas Turbine ◽

Power Unit ◽

High Power ◽

Diesel Engines ◽

Vibration Characteristics ◽

Propeller Shaft ◽

Marine Propulsion ◽

Shaft Vibration ◽

Propulsion Power

The gas turbine is established as a Naval Marine propulsion power unit and the number of ships at sea using the high power gas turbine in association with diesel engines, smaller gas turbine or steam turbine is increasing. Gear unit designs have been evolved to meet the conditions dictated by the engine/propeller shaft positions and the requirements of ship designers. The involvement of the gear designer in the analysis of shaft vibration characteristics is accepted, and the advantage of costly shore testing has been proven in that design modifications could be difficult and expensive to carry out during trials.

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Main Reduction Gears for Contrarotation

Marine Technology and SNAME News ◽

10.5957/mt1.1969.6.4.440 ◽

1969 ◽

Vol 6 (04) ◽

pp. 440-448

Author(s):

W. I. H. Budd

Keyword(s):

High Power ◽

Additional Research ◽

Major Portion ◽

Marine Propulsion ◽

Fixed Axis ◽

Manufacturing Facilities ◽

Design Techniques

The trend to high-power marine propulsion plants can be satisfied by machinery suppliers with existing design techniques, experience, and manufacturing facilities. The naval architect's task of utilizing this increased power efficiently leads to consideration of contrarotating propellers, particularly in vessels where the draft is limited. The major portion of the paper is devoted to discussion of gear designs for contrarotation. The special characteristics and problems attendant to the application of epicyclics in first and second reductions are discussed. The advantages of conventional fixed-axis gearing for contrarotation together with suitable arrangements are described. Finally, areas are indicated where additional research is desirable.

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Marine Reversing Gear Incorporating Single Reversing Hydraulic Coupling and Direct-Drive Clutch for Each Turbine

Volume 1A: Gas Turbines ◽

10.1115/79-gt-61 ◽

1979 ◽

Cited By ~ 3

Author(s):

E. Fortunato ◽

H. A. Clements

Keyword(s):

Control System ◽

High Power ◽

Direct Drive ◽

Marine Propulsion ◽

Hydraulic Coupling

The paper introduces a new design of Reversing Hydraulic Coupling which is used in combination with a Direct-Drive Clutch to provide an extremely compact marine reversing gearbox, suitable for high power marine propulsion drives. The resulting unit needs a very simple control system and is highly flexible in operation.

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Reverse Reduction Marine Drives for High Powered Gas Turbines

ASME 1971 International Gas Turbine Conference and Products Show ◽

10.1115/71-gt-82 ◽

1971 ◽

Author(s):

J. M. Phinney

Keyword(s):

High Power ◽

Gas Turbines ◽

High Speed ◽

Design Features ◽

Transient Conditions ◽

Marine Propulsion ◽

Prime Movers ◽

Individual Design ◽

Very High ◽

Methods Of Control

Recent requirements for marine propulsion gearing have dictated the analysis of and designs for reversing reduction drives with very high power levels, utilizing aricraft type gas turbines as prime movers. Service in either high-speed cargo vessels or ships operating in icebound waters is contemplated. Individual design features of the drive assemblies as well as methods of control and response to transient conditions is explored.

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Dynamic Modeling and Wear-Based Remaining Useful Life Prediction of High Power Clutch Systems

Tribology Transactions ◽

10.1080/05698190590927451 ◽

2005 ◽

Vol 48 (2) ◽

pp. 208-217 ◽

Cited By ~ 32

Author(s):

Matthew Watson ◽

Carl Byington ◽

Douglas Edwards ◽

Sanket Amin

Keyword(s):

Dynamic Modeling ◽

High Power ◽

Life Prediction ◽

Remaining Useful Life ◽

Useful Life

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Less Power, Greater Conflict

Social Psychology ◽

10.1027/1864-9335/a000327 ◽

2018 ◽

Vol 49 (1) ◽

pp. 47-62 ◽

Cited By ~ 1

Author(s):

Petra C. Schmid

Keyword(s):

Low Power ◽

High Power ◽

Goal Pursuit ◽

Goal Conflict ◽

Personal Goals ◽

Multiple Goals ◽

Objective Performance ◽

The Future ◽

The Way

Abstract. Power facilitates goal pursuit, but how does power affect the way people respond to conflict between their multiple goals? Our results showed that higher trait power was associated with reduced experience of conflict in scenarios describing multiple goals (Study 1) and between personal goals (Study 2). Moreover, manipulated low power increased individuals’ experience of goal conflict relative to high power and a control condition (Studies 3 and 4), with the consequence that they planned to invest less into the pursuit of their goals in the future. With its focus on multiple goals and individuals’ experiences during goal pursuit rather than objective performance, the present research uses new angles to examine power effects on goal pursuit.

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