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N. Taylor
Model Power Boats


This authoritative guide to the building of working model power boats covers the three basic groups — scale models, semi-scale models in which modifications are made to simplify construction and increase efficiency, and functional models in which appearance is sacrificed to obtain the utmost speed.
An early chapter is devoted to the essential theory behind the design of power boats; then follows instruc- tion on how to design a model and how to draw up full-size working plans, A section on power units covers the various types of internal combustion engines, electric motors, steam engines and Jetex motors avail- able for use. Subsequent chapters deal with the construction of the hull in wood and in metal, and the fitting of the superstructure, the problems of transmission and the correct use of propellers. The closing section covers the use of constructional kits, and provides detailed specifications and a glossary of technical terms.

Книга на английском языке.

 

СОДЕРЖАНИЕ

I. INTRODUCTION TO THE HOBBY
       Types of Models [ 11 ]
       On Choosing a Model [ 12 ]
       Fundamental Requirements [ 16 ]
       Effect of Scale on Size [ 17 ]
       Practical Utility of Models [ 17 ]
       Useful Tools [ 17 ]

II. THEORETICAL CONSIDERATIONS
       Aim of Theoretician [ 20 ]
       Primary Considerations [ 20 ]
       Why a Boat Floats [ 21 ]
       Displacement of Water [ 21 ]
       Valume of Displacement [ 21 ]
       Correct Flotation [ 22 ]
       Conditions of Equilibrium [ 22 ]
       Fundamentals of Stability [ 22 ]
       Buoyancy [ 23 ]
       Transverse Stability [ 23 ]
       Determining Permissible Weight [ 24 ]
       Conditions of Transverse Stability [ 24 ]
       Righting Couples [ 24 ]
       Upsetting Couples [ 25 ]
       The Metacentre [ 25 ]
       Metacentric Height [ 26 ]
       Metacentric Moment of Stability [ 26 ]
       Effect of Ballast [ 27 ]
       Form of Immersed Hull [ 27 ]
       Action of Boat amonget Waves [ 27 ]
       Longitudinal Stability [ 27 ]
       Dispoasition of Hull Weights [ 28 ]
       Reserve of Buoyancy [ 28 ]
       Beam to Length Ratio [ 28 ]
       Hydroplanes [ 29 ]
       Balance of Opposing Forces [ 29 ]
    RESISTANCE AND PROPULSION [ 30 ]
       Skin Friction [ 30 ]
       Average Resistance of Model [ 31 ]
       Increased Resistace at Speed [ 31 ]
       Eddy Making [ 32 ]
       Wave Making [ 32 ]
       Bow Wave System [ 34 ]
       Parallel Middle Body [ 34 ]
       Stern Wave System [ 35 ]
       Wave Making by Hydroplanes [ 35 ]
       The Wake [ 36 ]
       Air Resistance [ 36 ]
       Total Resistance [ 36 ]
       Power Needed to Drive a Model [ 36 ]
       Transmission Losses [ 37 ]
       Theory of Propulsion [ 37 ]
       The Jet System [ 38 ]
       Paddle Wheels [ 38 ]
       The Screw Propeller [ 38 ]
       Fundamentals of Propulsion [ 39 ]

III. PLANNING AND DESIGN
       The Drawing Board [ 40 ]
       Drawing Board Sizes [ 41 ]
       Drawing Instruments [ 41 ]
       Special Drawing Instruments [ 42 ]
       Batten Weights [ 43 ]
       Use of Splines and Ship's Curves [ 43 ]
       Preparing a Set of Hull Lines [ 45 ]
       Setting out the Hull Lines [ 48 ]
       The Trial Load Water Line [ 49 ]
       Setting out the Buttock Lines [ 50 ]
       Diagonal Lines [ 51 ]
       General Conclusions [ 52 ]
       Drawing the Superstructure and Details [ 52 ]
       Designing a Representative Model [ 52 ]
       Preliminary Considerations [ 53 ]
       Allocation of Weights [ 53 ]
       Determining the Area of Mid-section [ 54 ]
       The Prismatic Coefficient [ 54 ]
       Determining Draught and Beam [ 54 ]
       Estimating the Displacement [ 55 ]
       Computing the Areas of Sectioms [ 55 ]
       Areas by Simpson's Rule [ 56 ]
       Displacement by Simpson's Rule [ 56 ]
       Curve of Sectional Areas [ 57 ]
       Curve of Versed Sines [ 58 ]
       Describing a Curve of Versed Sines [ 58 ]
       Drawing a Trochoidal Curve [ 58 ]
       Fore and Aft Position of C.B. [ 59 ]
       Vertical Height of Centre of Buoyancy [ 60 ]
       Position of C.B. when Inelined [ 60 ]
       Ascertaining the Metacentric Height [ 60 ]
       Moment of Inertia of Water-plane Area [ 60 ]
       Finding Positions of C.G. [ 61 ]
       Concluding work on the Design [ 62 ]

IV. MOTIVE POWER — INTERNAL COMBUSTION ENGINES
       Two-stroke Operation [ 63 ]
       Bore, Stroke and Compression Ratio [ 65 ]
       Engine Capacity [ 67 ]
       Starting - General Observations [ 67 ]
       SPARK IGNITION ENGINES [ 71 ]
       Carburation [ 71 ]
       Ignition [ 72 ]
       Starting [ 72 ]
       COMPRESSION IGNITION ('DIESEL') ENGINES [ 75 ]
       Starting [ 76 ]
       HOT COIL IGNITION ('GLOW-PLUG') ENGINES [ 79 ]
       Ignition [ 79 ]
       Starting [ 79 ]
       Ignition [ 81 ]
       Carburation [ 81 ]
       INSTALLATION: ALL TYPES OF I.C. ENGINES [ 81 ]
       FUELS FOR INTERNAL COMBUSTION ENGINES [ 82 ]
       Spark Ignition Fuel [ 83 ]
       Compression Ignition ('Diesel') Fuels [ 83 ]
       Hot Coil Ignition ('Glow-Plug') Fuels [ 84 ]

V. MOTIVE POWER — ELECTRICITY, STEAM AND JETEX
       ELECTRIC MOTORS [ 86 ]
       The Field Magnets [ 87 ]
       The Armature [ 88 ]
       The Commutator [ 88 ]
       Brushes and Brush Gear [ 88 ]
       Failure to Work [ 89 ]
       Switching and Reversing [ 89 ]
       Batteries and Accumulators [ 92 ]
       'Ever Ready' Dry Batteries [ 93 ]
       'Exide' Miniature Accumulators [ 95 ]
       'Venner' Lightweight Silver-zine Accumulators [ 96 ]
       STEAM ENGINES [ 97 ]
       Action of Steam Engine [ 97 ]
       Choice of Steam Engine [ 99 ]
       Installation and Maintenance [ 104 ]
       JETEX MINIATURE JET MOTORS [ 105 ]
       Fuel and Principle of Operation [ 106 ]
       Hydroplanes for Jetex Motors [ 107 ]
       SPECIFICATION CHART: JETEX JET MOTORS [ 110 ]

VI. HULL CONSTRUCTION [ 111 ]
       Choice of Material [ 112 ]
       Choice of Method [ 114 ]
       Flat-bottomed Hulls [ 115 ]
       Composite Hull Construction [ 117 ]
       Built and Carved Hull [ 119 ]
       Cardboard Hulls [ 120 ]
       Multi-skinned Hulls [ 121 ]
       Box Form Hulls [ 122 ]
       'Solid' Hull Construction [ 123 ]
       Two-block Hulls [ 125 ]
       Laminated Hull Construction [ 126 ]
       Former and Plank Hull Construction [ 128 ]
       Weights of Hulls [ 135 ]
       Internal Strengthening Members [ 135 ]
       Metal Hulls [ 136 ]

VII. SUPERSTRUCTURES AND DECK FITTINGS
       Materials [ 138 ]
       Accessibility [ 139 ]
       Deck Beams [ 139 ]
       Decking [ 139 ]
       Coamings [ 140 ]
       Hatchways [ 140 ]
       Upper Decks [ 141 ]
       Boat Decks [ 142 ]
       Navigation Bridges [ 142 ]
       Docking Bridges [ 143 ]
       Deck Cabins [ 143 ]
       Saloons [ 144 ]
       Stairways [ 145 ]
       Turtle Decks [ 145 ]
       Spray Hoods [ 145 ]
       Methods of Securing Decks [ 146 ]
       Spring Catches [ 146 ]
       Waterlight Joints [ 147 ]
       Warship Superstructures [ 147 ]
       Concluding Remarks [ 148 ]
    DECK FITTINGS [ 149 ]
       Original Designs [ 149 ]
       Making Deck Fittings [ 149 ]
       Accommodation Ladder [ 151 ]
       Anchors [ 151 ]
       Awning Stanchions [ 151 ]
       Breakwater [ 151 ]
       Binnacles [ 152 ]
       Bitts [ 152 ]
       Ship's Boats [ 152 ]
       Boat Lowering Winch [ 152 ]
       Bollards [ 152 ]
       Bom Fittings [ 153 ]
       Cable [ 153 ]
       Cable Stopper [ 153 ]
       Capetans [ 153 ]
       Cargo Winch [ 153 ]
       Chain Leads and Pipes [ 153 ]
       Chocks [ 153 ]
       Gleats [ 153 ]
       Companions [ 153 ]
       Cowls [ 155 ]
       Davits [ 155 ]
       Dead Lights [ 155 ]
       Derricks [ 155 ]
       Direction Finder Aerial [ 156 ]
       Fairleads [ 156 ]
       Fender [ 156 ]
       Flagmasts [ 156 ]
       Funnels [ 156 ]
       Gin Blocks [ 157 ]
       Gratings [ 157 ]
       Guns [ 157 ]
       Guro Compass [ 158 ]
       Hatchways [ 158 ]
       Hawse Pipes [ 158 ]
       Headlights [ 158 ]
       Ladders [ 159 ]
       Lifebuoy [ 159 ]
       Masts [ 159 ]
       Mooring Cleats [ 160 ]
       Navigational Range-finder [ 160 ]
       Night lifebuoy [ 160 ]
       Ports [ 160 ]
       Pumps [ 160 ]
       Purchase Reel [ 160 ]
       Searchlights [ 160 ]
       Shackles [ 160 ]
       Sheave-hoods [ 160 ]
       Side lights [ 161 ]
       Skylights [ 161 ]
       Sounding Machine [ 161 ]
       Stanchions [ 161 ]
       Steering Wheels [ 163 ]
       Telegraphs [ 163 ]
       Telephone [ 163 ]
       Thermo Tanks [ 163 ]
       Turnbuckles [ 165 ]
       Ventilators [ 165 ]
       Water Breaker [ 165 ]
       Winch [ 165 ]
       Windlass [ 166 ]

VIII. PROPELLERS AND TRANSMISSION
       Definitions [ 167 ]
       General Considerations [ 169 ]
       Geometry of the Propeller [ 170 ]
       Average Diameters and Pitches [ 171 ]
       Making Propellers [ 172 ]
       Multiple Screws [ 173 ]
       Propeller Shafts and Stern Tubes [ 173 ]
       Shaft Brackets [ 175 ]
       Shaft Couplings [ 177 ]
       Spur Gearing [ 177 ]
       SPEED CHART [ 178 ]

IX. 'FITTING OUT' AND FINISHING
       Distribution of Weights [ 179 ]
       Fitting the Propeller Shaft [ 179 ]
       Rudders [ 181 ]
       Making and Fitting Masts [ 182 ]
       Metal Masts [ 184 ]
       Rigging the Mast [ 184 ]
       Derricks and Booms [ 186 ]
       Detachable Masts and Rigging [ 186 ]
       Stanchions and Handrails [ 186 ]
       Fitting and Power Plant [ 187 ]
       Painting and Finishing [ 188 ]
       Varnishing [ 190 ]
       Enamelling [ 190 ]
       Cellulose Finishing [ 191 ]

X. CONSTRUCTIONAL KITS [ 194 ]
       POPULAR KIT MODELS [ 195 ]
       'SPRAYMASTER': SPECIFICATION [ 195 ]
       'WAVEMASTER': SPECIFICATION [ 197 ]

XI. RULES AND SPECIFICATIONS
       THE MODEL POWER BOAT ASSOCIATION[ 203 ]
       Regattas [ 204 ]
       Rules [ 204 ]
       Radio Control Rules [ 208 ]

LIST OF CLUBS AFFILIATED TO THE M.P.B.A. [ 209 ]

GLOSSARY OF TECHNICAL TERMS [ 211 ]

INDEX [ 222 ]





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