PART IV

--ENGINE DEVELOPMENT

I. THE VERTICAL TYPE 383

II. THE VEE TYPE 404

III. THE RADIAL TYPE 417

IV. THE ROTARY TYPE 428

V. THE HORIZONTALLY-OPPOSED ENGINE 440

VI. THE TWO-STROKE CYCLE ENGINE 447

VII. ENGINES OF THE WAR PERIOD 458

APPENDICES 469

A SHORT BIBLIOGRAPHY OF AERONAUTICS 504

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