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