| CHAPTER | PAGE | |
| 1. | Why an Aeroplane Flies | [ 1] |
| 2. | Types of Model Aeroplanes | [12] |
| 3. | Practical Construction: Model Aeroplane Fuselages | [19] |
| 4. | Practical Construction: Carving Air-screws | [35] |
| 5. | Practical Construction: Bending Air-screws | [42] |
| 6. | Practical Construction: Planes | [47] |
| 7. | Simple Twin-screw Monoplane | [54] |
| 8. | Simple Twin-screw Biplane | [61] |
| 9. | Winders for Elastic Motors | [69] |
| 10. | Collapsible Monoplane | [73] |
| 11. | Tractor Monoplane | [80] |
| 12. | Hydro-Monoplane | [87] |
| 13. | Compressed-air Engine for Model Aeroplane | [94] |
| 14. | Biplane Driven by Compressed-air Engine | [104] |
| 15. | General Notes on Model Designing | [120] |
| 16. | General Notes | [124] |
| 17. | Easily-Made Tailless Kites | [136] |
| 18. | Building a Model Airship | [141] |
| Index | [154] |
MODEL AEROPLANES
CHAPTER I
Why an Aeroplane Flies
Why does an aeroplane fly? The question is worthy of close examination. There is one common enemy to aeroplanes—the force of gravity. Were it not for the existence of this force, which, as Newton put it, “is unseen and unheard and yet dominates the universe,” the problem of the aeroplane would have been solved years ago.
Fig. 1.—Bristol Monoplane and Biplane
Most readers have handled the toy kite, and since the principles governing the flight of a kite are precisely the same as those which apply to the aeroplane, the latter will be the more readily understood if the principles are explained through this medium. Full-size aeroplanes to which certain models approximate are shown in [Fig. 1].
Fig. 1A.—Forces Acting on Kite