Aeroplanes

The "Science" of Aviation. Machine Types. Shape or Form not Essential. A Stone as a Flying Machine. Power the Great Element. Gravity as Power. Mass and Element in Flying. Moment...

Speed as one of the Elements. Shape and Speed. What "Square of the Speed" Means. Action of a "Skipper." Angle of Incidence. Speed and Surface. Control of the Direction of Flight...

The Theory of Copying Nature. Hulls of Vessels. Man Does not Copy Nature. Principles Essential, not Forms. Nature not the Guide as to Forms. The Propeller Type. Why Specially-de...

The Bird Type of Fore and Aft Control. Angle and Direction of Flight. Why Should the Angle of the Body Change. Changing Angle of Body not Safe. A Non-changing Body. Descending P...

Relative Speed and Angle. Narrow Planes Most Effective. Stream Lines Along a Plane. The Center of Pressure. Air Lines on the Upper Side of a Plane. Rarefied Area. Rarefaction Pr...

Lack of Improvements in Machines. Men Exploited and not Machines. Abnormal Flying of no Value. The Art of Juggling. Practical Uses the Best Test. Concaved and Convex Planes. How...

The Dragon Kite. Its Construction. The Malay Kite. Dihedral Angle. The Common Kite. The Bow Kite. The Box Kite. The Voison Bi-plane. Lateral Stability in Kites, not Conclusive a...

Lateral and Fore and Aft. Transverse. Stability and Stabilization. The Wright System. Controlling the Warping Ends. The Curtiss Wings. The Farman Ailerons. Features Well Develop...

Features in Power Application. Amount of Power Necessary. The Pull of the Propeller. Foot Pounds Small Amount of Power Available. High Propeller Speed Important. Width and Pitch...

The Anemometer. The Anemograph. The Anemometrograph. The Speed Indicator. Air Pressure Indicator. Determining the Pressure From the Speed. Calculating Pressure From Speed. How t...

Certain Conditions in Flying. Heat in Air. Motion When in Flight. Changing Atmosphere. "Ascending Currents." "Aspirate Currents." Outstretched Wings. The Starting Point. The Vit...

Propeller Changes. Propeller Shape. The Diameter. Pitch. Laying Out the Pitch. Pitch Rule. Laminated Construction. Laying up a Propeller Form. Making Wide Blades. Propeller Outl...

The Relation of Models to Flying Machines. Lessons From Models. Flying Model Aeroplanes. An Efficient Glider. The Deltoid Formation. Racing Models. The Power for Model Aeroplane...

Balloon Observations. Changed Conditions in Warfare. The Effort to Conceal Combatants. Smokeless Powder. Inventions to Attack Aerial Craft. Functions of the Aeroplane in War. Bo...

THE "SCIENCE" OF AVIATION.--It may be doubted whether there is such a thing as a "science of aviation." Since Langley, on May 6, 1896, flew a motor-propelled tandem monoplane fo...

FROM the foregoing chapter, while it may be rightly inferred that power is the true secret of aeroplane flight, it is desirable to point out certain other things which must be c...

EVERY investigator, experimenter, and scientist, who has given the subject of flight study, proceeds on the theory that in order to fly man must copy nature, and make the machin...

THERE is no phase of the art of flying more important than the fore and aft control of an airship. Lateral stability is secondary to this feature, for reasons which will appear...

The Helicopter, on the other hand, has no antecedent type, but is dependent for its raising powers on the pull of a propeller, or a plurality of them, constructed, as will be po...

THIS subject includes the form, shape and angle of planes, used in flight. It is the direction in which most of the energy has been expended in developing machines, and the true...

"PEQUOD, a Frenchman, yesterday repeatedly performed the remarkable feat of flying with the machine upside down. This exhibition shows that the age of perfection has arrived in...

KITES are of very ancient origin, and in China, Japan, and the Malayan Peninsula, they have been used for many years as toys, and for the purposes of exhibiting forms of men, an...

As may be inferred from the foregoing statements, there are no definite rules for the construction of either type of flying machine, as the flying models vary to such an extent...

THIS is a phase of the flying machine which has the greatest interest to the boy. He instinctively sees the direction in which the machine has its life,--its moving principle. P...

THE ANEMOMETER.--It requires an expert to judge the force or the speed of a wind, and even they will go astray in their calculations. It is an easy matter to make a little appar...

THE novice about to take his first trial trip in an automobile will soon learn that the great task in his mind is to properly start the machine. He is conscious of one thing, th...

BY far the most difficult problem connected with aviation is the propeller. It is the one great vital element in the science and art pertaining to this subject which has not adv...

Abroad this work has been very successful as a means of interesting boys, and, indeed, men who have taken up the science of aviation are giving this sport serious thought and st...

DURING the civil war the Federal forces used captive balloons for the purpose of discovering the positions of the enemy. They were of great service at that time, although they w...