It may in such a case be necessary to fit an induction valve to the pump. The envelope should be inflated to as low a pressure as possible, otherwise the lift is correspondingly reduced. In all cases it is exceedingly difficult with model airships to prescribe any definite formula, and although the lift coefficient for models exceeds the figure stated, the conjectural nature of the purity (and hence of lift) of hydrogen in various parts of the country renders it a safe one to use for all practical purposes.
INDEX
- Action and reaction, [5]
- Aerofoil, flow of air round, [10]
- ——, lift of, [10]
- Aeroplane, speed of, [4]
- ——, types of, [12-16]
- ——: Why does it fly? [1-11]
- A frame, [20], [22], [23]
- Air, density of, [35], [36]
- —— flow, direction of, [5]
- —— pressure, [2]
- Air-screw, action of, [35]
- —— balancing, [38]
- ——, calculations for, [36]
- ——, efficiency, [35]
- ——, four-bladed, making, [133]
- ——, laminated, [39]
- ——, suitable woods for, [36], [38]
- Bamboo planes, [30]
- Bending air-screws, [42-46]
- Biplane, fitting struts to, [128]
- ——, sample twin-screw, [61-68]
- Blade width, maximum, [45]
- Blériot type monoplane, [18]
- Box kite, [138], [139], [140]
- Bragg-Smith, [15]
- Building airship, [141], [154]
- Calculations in designing aeroplane plant, [120]
- Camm air-screw, proportions of, [46]
- Canard, meaning of, [8]
- Carving air-screws, [35-41]
- Chauvière type air-screw, [38]
- Clarke, T. W. K., [14]
- Compressed-air engine, [94-102]
- —— ——, container for, [99]
- —— ——, crank for, [97], [98]
- —— ——, inlet and exhaust, etc., of, [97]
- —— ——, pistons for, [98]
- Compressed-air engine, testing the container, [100]
- —— ——, three-cylinder, [94-103]
- —— ——, valve and tap for, [100]
- Compressed-air-driven biplane, [104-114]
- —— ——, bracing planes of, [115]
- —— ——, calculations for, [104-109]
- —— ——, flying, [118], [119]
- —— ——, inter-struts for, [112]
- —— ——, materials for, [106]
- —— ——, planes for, [109]
- —— ——, tail for, [111]
- Designing, general notes on, [120], [123]
- Dihedral angle, [7]
- Double-winder, [70-72]
- Drift and lift, [3], [6]
- Efficiency air-screw, [35]
- —— formula, [19]
- Elastic motor, disadvantages of, [94]
- Elevator adjustment, [127]
- Equilibrium, [2]
- Fairey, [12]
- Force of gravity, [2]
- Forces acting on kite, [2], [3]
- Formula, efficiency, [19]
- ——, type, [18]
- Four-bladed air-screws, making, [133]
- Fuselages, [19-34]
- ——, boat-shaped, [24]
- ——, box-girder, [26]
- ——, distortion, [30]
- ——, simple, [28], [29]
- ——, single-spar, [26]
- Fuselages, twin-screw, [26]
- ——, two-membered, [25]
- Geared motor for model aeroplane, [134]
- General notes, [124-135]
- Gravity and pressure, [6], [7], [8]
- Gravity, force of, [2]
- Hargreaves kite, [132]
- Hollow spar, [22]
- Houlberg, [14]
- Hydro-biplane, [17]
- Hydro-monoplane, [87-93]
- ——, bearings for, [88]
- ——, elevator for, [90]
- ——, floats for, [90]
- ——, fuselage for, [87]
- ——, mainplane for, [88]
- ——, weight of, [93]
- Hydroplane floats, calculating capacity of, [130]
- ——, water surface, [128]
- Kite, box, [138], [139], [140]
- ——, forces acting on, [2-3]
- ——, Hargreaves’, [132]
- ——, speed of, [4]
- ——, tailless, [136-141]
- Lateral stability, [7]
- Lift and drift, [3], [6]
- —— of aerofoil, [10]
- Loading, [44]
- —— for aeroplanes, [127]
- Longitudinal stability, [8]
- Lubricant, [125]
- Mann, R. F., [20]
- Materials, choice of, [28]
- Monoplane, Blériot type, [18]
- ——, collapsible, [73-79]
- ——, ——, chassis for, [78]
- ——, ——, mainplane for, [75]
- ——, ——, propellers for, [79]
- ——, ——, tail for, [74]
- ——, hydro, [87-93]
- ——, Ridley, [12]
- ——, ——, twin-screw, [54-60]
- ——, ——, mainspar for, [54]
- ——, ——, propellers for, [58]
- ——, tractor, [80-86] (see Tractor monoplane)
- Penaud, Alphonse, [94]
- Piano wire, uses of, [30]
- Pitch, [35], [36], [39], [42], [44], [45]
- —— angles, setting out, [40]
- “Plane” and “aeroplane,” meaning of terms, [8]
- Planes, bamboo, [30]
- ——, cane, [50]
- ——, constructing, [47-53]
- ——, fixing, [133]
- ——, swept-back, [52]
- ——, types of, [47]
- ——, umbrella ribbing, [50]
- ——, wire, making, [50], [51]
- ——, wooden, [48]
- Plant, calculations for designing, [120]
- Pressure and gravity, centres of, [6], [7], [8]
- Resistance, air, [3]
- Ridley monoplane, [12]
- Scale models, building, [32], [34], [121], [122], [123]
- Silk, waterproof, [130]
- Skid, fitting, [126]
- Slip, [35]
- Small biplane, driving, [102-103]
- Spar sections, [26], [27]
- Speed of aeroplane, [4]
- Spindles, attaching, [46]
- Stability, [29], [124], [125]
- ——, lateral, [7], [42]
- ——, longitudinal, [8]
- Tailless kites, easily made, [136-141]
- T frame, [20], [22], [23]
- Thrust, [42]
- —— required for aeroplane, [11]
- Timber, strength of, [29], [30], [32]
- Torque, [29], [36], [42]
- Tractor hydro-biplane, [17]
- ——, monoplane, [80-86]
- ——, ——, chassis for, [82]
- ——, ——, mainplane for, [84]
- ——, ——, mainspar for, [80]
- ——, ——, twin-gears for, [84]
- Twining, E. W., [14], [17]
- —— air-screw, [46]
- Twin-screw biplane, simple, [61-68]
- —— —— ——, elevator for, [62]
- —— —— ——, flying the, [66-68]
- —— —— ——, mainspar for, [61]
- Type formula, [18]
- —— of aeroplanes, [12-18]
- Waterproof silk, [130]
- Water-surface hydroplane, [128]
- Winders for elastic motors, [69-72]
- ——, double, [70-72]
- ——, push-in-the-ground, [69-70]
- Wing bracing, [30]
Printed by Cassell & Company, Limited,
La Belle Sauvage, London, E.C.4
50.220
Transcriber’s Notes:
The illustrations have been moved so that they do not break up paragraphs and so that they are next to the text they illustrate.
Typographical and punctuation errors have been silently corrected.
Many of the illustrations are not in numerical order. This is not a mistake, it is part of the original book.