Flying Machines Today

In Short

This technical primer serves as a snapshot of aeronautics in the spring of 1911, a period when the dream of flight was rapidly shedding its circus-like reputation. It bridges the gap between the physics of kites and the burgeoning reality of dirigibles and aeroplanes. By outlining the fundamental challenges of stability, power, and air currents, the narrative argues that aviation is a rigorous science rather than a mere spectacle. It has endured as a primary historical record of the mechanical anxieties and boundless optimism that defined the early twentieth-century aerial revolution.

The Story

The narrative begins with a firm rejection of the "practical man"—the sportsman or thrill-seeker who treats aviation as a dangerous stage act. Instead, it positions the engineer as the essential pilot of progress, someone who views flight through the lens of mathematical calculation and material efficiency. The journey moves from the simple mechanics of soaring flight to the complex dynamics of air pressure, explaining why a kite needs a string just as much as it needs a breeze to maintain its altitude.

From these basic principles, the focus shifts to the two primary vessels of the era: the balloon and the aeroplane. The dirigible is examined through the lens of buoyancy, gas management, and the necessity of maintaining a level keel against the unpredictable whims of the atmosphere. The text then transitions to the heavier-than-air machine, emphasizing that the aeroplane’s success depends on solving the "low load factor"—the difficulty of maintaining performance in widely varying conditions. Throughout this progression, the author consistently highlights the peril of spectacular, high-altitude stunts or flights over cities. Such displays are dismissed as "circus riding," serving no purpose other than to satisfy a savage public instinct while ignoring the critical need for structural safety and automatic stability.

The narrative moves toward the future, projecting how these machines will transform exploration, mapping, and warfare. The conclusion is not a utopian dream but a pragmatic assessment of military potential and commercial utility. By comparing the cost of a single battleship to an entire fleet of inexpensive, agile aeroplanes, the text presents a vision of a world where traditional defenses may soon become obsolete. The final outlook is one of sober inevitability; while human flight remains hazardous, the relentless pace of development—doubling and tripling motor capacities in mere months—ensures that the sky will soon be conquered. The story ends on a note of technical anticipation, looking toward a future where the mastery of propeller efficiency and automatic balance will render the air as accessible as the sea.

How It Unfolds

The theory of lift The text establishes the physical laws governing flight, using the analogy of a kite to explain how air pressure and inclination determine both vertical and horizontal force. It clarifies that a machine cannot simply mimic a bird, as human weight requires far more sustained power than a living creature can naturally provide.

The anatomy of the dirigible The discussion turns to the rigid and non-rigid airships, detailing the use of ballonets and internal frameworks to preserve their shape. Stability is framed as a struggle against the wind, necessitating sophisticated tail assemblies and carefully positioned rudders to maintain a true course.

The engine and the air The focus shifts to the power plant, comparing the efficiency of four-cycle and two-cycle motors while noting the weight penalties inherent in rugged, reliable construction. The reader learns that the propeller is not just a driver but a critical component that can replace heavy ballast for ascent.

The hazards of the air The narrative examines the dangers of "wind gusts" and the limitations of human reaction time, arguing for the necessity of automatic, gyroscopic stabilization. It posits that a pilot is like a blindfolded chauffeur, emphasizing that relying on human instinct alone is a recipe for disaster.

The future of the machine The final section evaluates the role of flight in exploration and war, detailing how aerial reconnaissance and rapid transit will reshape the map. It concludes by calculating the economic impact of air power, suggesting that the era of the massive, slow-moving warship is nearing its end.

The People

The book focuses on the "aviator," a figure who must evolve from a daredevil into a cool-headed technician. The primary antagonist is not a person, but the "practical man"—the amateur who relies on safety pins and intuition rather than rigorous calculations. Countering this are the inventors and record-setters like Henry Farman and Glenn Curtiss, who represent the progress of the craft. Curtiss, in particular, is highlighted for his transition from early experiments to successful cross-country flights, symbolizing the shift toward practical utility. The author, William D. Ennis, remains a guiding, authoritative voice throughout, wanting the reader to adopt a scientific mindset. By the end, the reader is encouraged to see the aviator as a pioneer who must master the machine’s internal balance to overcome the hostile, invisible forces of the sky, eventually moving away from the era of the showman toward the era of the professional pilot.

In Its Own Voice

"Hitherto aviation has been almost monopolized by that much-overpraised and much-overtrusted person, 'the practical man.'"

Ennis argues that early aviation was dangerously dominated by reckless amateurs who lacked formal engineering knowledge.

"The 'truths' of today are the absurdities of tomorrow."

This observation underscores the author's humility regarding the rapid, often volatile, pace of technological advancement in the 1910s.

"No one has any business to attempt flying unless he is superlatively cool-headed and has the happy faculty of instinctively doing the right thing in an emergency."

This sobering assessment highlights the immense psychological and physical demands placed upon the early pilots of fragile, early-generation aircraft.

What It's Really About

The central theme is the professionalization of flight. The text argues that aerial navigation is an engineering discipline that requires the same mathematical rigor as civil or mechanical engineering. It strips away the romanticism surrounding the "bird-man" to reveal the underlying struggle with weight, power, and stability. The book serves as a manifesto against the "circus" atmosphere of early public demonstrations, demanding instead a focus on safety, reliable mechanical connections, and the development of automatic controls. At its core, the work explores the transition of flight from a dangerous, high-stakes curiosity into a reliable tool for human expansion, mapping, and the inevitable, brutal evolution of modern global conflict.

Why Read It Today

This book is a fascinating artifact for anyone interested in the history of technology or the transition from the mechanical age to the modern era. Readers will find it captures the precise moment when the internal combustion engine and the wing finally became a viable team. The prose is remarkably clear and unadorned, reflecting an educator’s desire to make a complex, emerging field accessible to the public.

However, be prepared for its limitations: it is a product of 1911, and the technological specifics—such as the reliance on rubber-band models and the detailed breakdowns of two-cycle engines—may feel archaic to modern eyes. The author’s period attitudes, particularly his casual mention of "hostile natives" in the context of exploration and his cold, detached assessment of war, offer a stark, unvarnished look at the imperial mindset of the early twentieth century. What stays with you is the palpable sense of excitement and the feeling of witnessing a revolution in real-time. It provides a rare, honest look at the "low load factor" of human ambition, where the gap between what was known and what was being risked was vast. If you appreciate a calm, expert guide walking you through the birth of a new world, this is a rewarding read.