CONTENTS 



PART 1 



(HAl'TEB PAGE 



I. Introductory 1 



! I . Preliminary 5 



Experiments with small models 6 



Abbreviations and symbols employed 14 



Experiments with Aerodromes N os. 30 and 31 16 



III. Available motors 21 



India rubber # 21 



Steam engine 24 



Gunpowder, hot-water, compressed air 25 



Gas, electricity 26 



Carbonic-acid gas 28 



IV. Early steam motors and other models 30 



V. On sustaining surfaces 41 



Experiments in the open wind 42 



Relation of air to weight and power 43 



VI. Balancing the aerodrome 45 



Lateral and longitudinal stability 45 



VII. History of construction of frame and engines of aerodromes 53 



1893 53 



1594 64 



1595 75 



1596 79 



VIII. History of construction of sustaining and guiding surfaces of aerodromes 4, 5, and 6. 80 



Introduction 80 



1893, 1894 81 



1895 85 



1896 ■ 89 



IX. History of launching apparatus and field trials of aerodromes 4, 5, and 6 92 



1S92 92 



1893 93 



Field trials 93 



1S94 96 



1895 . 101 



1896 106 



X. Description of the launching apparatus of aerodromes Nos. 5 and 6 110 



Description of Aerodrome No. 5 HI 



Description of Aerodrome No. 6 120 



PART II 



I. Introductory 123 



II. General considerations 128 



III. Experiments with models 133 



Condensed record of flights of aerodromes Nos. 5 and 6, from June 7 to August 3, 



1899 135 



June 7 — aerodrome No. 6 135 



June 13 — aerodrome No. 6 137 



June 22 — aerodrome No. 6 139 



June 23 — aerodrome No. 6 140 



June 27 — aerodrome No. 5 140 



June 30 — aerodrome No. 5 141 



July 1 to July 8 I 42 



July 11 to July 14 — aerodrome No. 5 1 t:: 



July 19 — aerodrome No. 5 144 



July 27 — aerodrome No. 6 1*5 



July 28 — aerodrome No. 6 1 4 Jj 



July 29 — aerodrome No. 5 14' 



August 1 — aerodrome No. 5 148 



August 3 — aerodrome No. 5 149 



