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Home Home Website Updates The Project 5AT Project Summary 5AT Project Aims 5AT Project News The 5AT The 5AT - Introduction Design Philosophy 5AT Specifications 5AT Performance Calculated Performance Computer-Simulation Performance Examples 5AT Features Thermal Efficiency Power-to-Weight Ratio Adhesion & Sanding Reliability Operating Costs Maintenance Costs Route Availability Fuel Consumption Operating Range Valves and Steamchest Feedwater Heating 5AT vs. 5MT 5AT and the Environment Emissions Fuels Engineering Introduction Fundamental Design 5AT FDCs Notes on FDC 1 Notes on FDC 4 Notes on FDC 8 Notes on FDC 9 Notes on FDC 11 Notes on FDC 12 Notes on FDC 13 Notes on FDC 18 Wardale's Summary Detail Design Engineering Help Scale of theTask Drawings Research Opportunities Project Plans Project Planning Commercial Planning Group Engineering Planning W/P Feasibility Study SGS Loco DevCo Project Funding Current Plans Commercial Planning W/P Marketing Planning W/P Recruitment Options Optional Strategies 8AT 2-8-0 8ATT 2-8-4T Longer Term Options Support Project Personnel John Hind Chris Newman John Duncan Richard Coleby Jamie Keyte Paul Hibberd Mike Horne Robin Barnes Alan Fozard Acknowledgements David Smith Brian McCammon Malcolm Cluett Allan Wallace David Pawson Bob Bramson David Ward Martyn Bane Paul Catchpole Terry Flynn Dominic Wells Recruitment Situations Vacant Promotion Promoting the 5AT 5AT Website Presentations Published Articles and Letters 1998 - 2001 2002 - present Overseas Articles Non Railway Press Art Work 5AT Models Laura's 5AT Animation Livery Options FAQs FAQ Summary General Questions More Innovation? Cutting Metal Loco turning? Why a 4-6-0? Why not a 4-8-0 ? Larger driving wheels? 200 km/h Speed Approval Network Rail Approvals? Performance Questions 5AT performance exaggerated?: Reliability Thermal Efficiency Motion, Balancing, Valve Gear Why Walschaerts valve gear ? Why not Baker Valve Gear? Why not British Caprotti? Why not Variable Lead? Piston vs. Caprotti Valves Piston speed too high? Why not 3 cylinders? Hammer Blow? Boiler Questions Boiler large enough? Boiler pressure too high? Why not higher pressure? Steaming Rate Unachievable Feedwater Heating Steam Flow and Exhaust Why not a compound? Steam Pipes Exhaust Systems Steam Jacket to Cylinders? Fuel Questions What is "Gas Oil"? Why not Coal Fuel? What about Bio-Mass Fuel? Technical Specs Modern Steam Introduction Terms and Definitions Thermal Efficiency Power and Indicator Diagrams Power-to-Weight Ratio Specific Steam Consumption Tractive Effort Adhesion Resistance Simple/Compound Motion Valves, Valve Gear etc Snifting and Bypass Valves Hammer Blow Combustion Air Superheating Steam Chest Clearance Volume Condensation/Wall Effects Triangular Losses Incomplete Expansion Exhausts Thermodynamics Thermodynamic Equations Thermodynamic Definitions Enthalpy Entropy Mollier or h-s Diagram Steam Tables Thermodynamic Anomalies André Chapelon Livio Dante Porta Present Day Steam Specialists David Wardale Roger Waller Phil Girdlestone Shaun McMahon Nigel Day Ian Gaylor Manuel Ramos: Ian Screeton Principles of Modern Steam "Second Generation Steam" GPCS Combustion Air Preheating Porta's Water Treatment Feedwater Heating Steam Press & Temp Internal Streamlining Low Heat Losses Steam Tightness Valve Design Exhaust Systems Kordina Valve Events The α Coefficient Compound Expansion Lubrication and Tribology Advanced Adhesion Modern Steam Miscellany The Red Devil Rio Turbio Railway DLM 52-8055 SS Montreux FCAF Garratt No 2 Kirklees Light Railway Bure Valley Railway Contributions References References - General Porta's Papers Wardale Letters Prof. Bill Hall's Software Using Perwal and Perform Books and Publications Red Devil Book - a Review Advanced Steam Loco Development La Locomotive a Vapeur Chapelon - by Col. Rogers How a Steam Loco Works Bulleid and the Turf Burner Haigh - Locomotive Boilers Papers Porta's Papers Modern Steam Papers Steam vs. Diesel Debates Fuels and Emissions Audio-visuals SAR Recordings Manufacturers and Operators Website Links Articles and Letters 1998/9 Articles and Letters 2000/1 Articles and Letters 2002 Articles and Letters 2003 Articles and Letters 2004/5 Articles and Letters 2006-10 Articles and Letters 5AT Project Archives Archives - General Project Timeline Photos News Bulletins Newsletters

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