A History of AeronauticsPART II. 1903-1920: PROGRESS IN DESIGNReading editionChapter navigation45 reading sectionsGo to chapterChoose a chapter…FOREWORDI. THE PERIOD OF LEGENDII. EARLY EXPERIMENTSIII. SIR GEORGE CAYLEY—THOMAS WALKERIV. THE MIDDLE NINETEENTH CENTURYV. WENHAM, LE BRIS, AND SOME OTHERSVI. THE AGE OF THE GIANTSVII. LILIENTHAL AND PILCHERVIII. AMERICAN GLIDING EXPERIMENTSIX. NOT PROVENX. SAMUEL PIERPOINT LANGLEYXI. THE WRIGHT BROTHERSXII. THE FIRST YEARS OF CONQUESTXIII. FIRST FLIERS IN ENGLANDXIV. RHEIMS, AND AFTERXV. THE CHANNEL CROSSINGXVI. LONDON TO MANCHESTERXVII. A SUMMARY, TO 1911XVIII. A SUMMARY, TO 1914XIX. THE WAR PERIOD—IXX. THE WAR PERIOD—IIXXI. RECONSTRUCTIONXXII. 1919-20PART II. 1903-1920: PROGRESS IN DESIGNI. THE BEGINNINGSII. MULTIPLICITY OF IDEASIII. PROGRESS ON STANDARDISED LINESIV. THE WAR PERIODI. BEGINNINGSII. THE FIRST DIRIGIBLESIII. SANTOS-DUMONTIV. THE MILITARY DIRIGIBLEV. BRITISH AIRSHIP DESIGNVI. THE AIRSHIP COMMERCIALLYVII. KITE BALLOONSI. THE VERTICAL TYPEII. THE VEE TYPEIII. THE RADIAL TYPEIV. THE ROTARY TYPEV. THE HORIZONTALLY-OPPOSED ENGINEVI. THE TWO-STROKE CYCLE ENGINEVII. ENGINES OF THE WAR PERIODAPPENDIX AAPPENDIX BAPPENDIX CPrevious chapter ←Part 1 — XXII. 1919-20Next chapter →Part 2 — I. THE BEGINNINGSAll chapters and sections (45)Other sectionsFOREWORDPart 1 · Other sectionsI. THE PERIOD OF LEGENDII. EARLY EXPERIMENTSIII. SIR GEORGE CAYLEY—THOMAS WALKERIV. THE MIDDLE NINETEENTH CENTURYV. WENHAM, LE BRIS, AND SOME OTHERSVI. THE AGE OF THE GIANTSVII. LILIENTHAL AND PILCHERVIII. AMERICAN GLIDING EXPERIMENTSIX. NOT PROVENX. SAMUEL PIERPOINT LANGLEYXI. THE WRIGHT BROTHERSXII. THE FIRST YEARS OF CONQUESTXIII. FIRST FLIERS IN ENGLANDXIV. RHEIMS, AND AFTERXV. THE CHANNEL CROSSINGXVI. LONDON TO MANCHESTERXVII. A SUMMARY, TO 1911XVIII. A SUMMARY, TO 1914XIX. THE WAR PERIOD—IXX. THE WAR PERIOD—IIXXI. RECONSTRUCTIONXXII. 1919-20Parts2Part 2 · Other sectionsI. THE BEGINNINGSII. MULTIPLICITY OF IDEASIII. PROGRESS ON STANDARDISED LINESIV. THE WAR PERIODPart 3 · Other sectionsI. BEGINNINGSII. THE FIRST DIRIGIBLESIII. SANTOS-DUMONTIV. THE MILITARY DIRIGIBLEV. BRITISH AIRSHIP DESIGNVI. THE AIRSHIP COMMERCIALLYVII. KITE BALLOONSPart 4 · Other sectionsI. THE VERTICAL TYPEII. THE VEE TYPEIII. THE RADIAL TYPEIV. THE ROTARY TYPEV. THE HORIZONTALLY-OPPOSED ENGINEVI. THE TWO-STROKE CYCLE ENGINEVII. ENGINES OF THE WAR PERIODAPPENDIX AAPPENDIX BAPPENDIX CBy Lieut.-Col. W. Lockwood Marsh← XXII. 1919-20I. THE BEGINNINGS →