=FLYING MACHINES TO-DAY.= By WILLIAM D. ENNIS, M. E., Professor of
Mechanical Engineering, Polytechnic Institute, Brooklyn. 12mo.,
cloth, 218 pp., 123 illustrations =$1.50 net=
=CONTENTS=: THE DELIGHTS AND DANGERS OF FLYING--Dangers of
Aviation--What it is Like to Fly. SOARING FLIGHT BY MAN--What Holds
it Up. Lifting Power. Why so Many Sails. Steering. TURNING
CORNERS--What Happens When Making a Turn. Lateral Stability. Wing
Warping. Automatic Control. The Gyroscope. Wind Gusts. AIR AND THE
WIND--Sailing Balloons. Field and Speed. GAS AND BALLAST--Buoyancy in
Air. Ascending and Descending. The Ballonet. The Equilibrator.
DIRIGIBLE BALLOONS AND OTHER KINDS--Shapes. Dimensions. Fabrics.
Framing. Keeping the Keel Horizontal. Stability. Rudders and Planes.
Arrangement and Accessories. Amateur Dirigibles. Fort Omaha Plant.
Balloon Progress. QUESTION OF POWER--Resistance of Aeroplanes.
Resistance of Dirigibles. Independent Speed and Timetable. Cost of
Speed. Propeller. GETTING UP AND DOWN; MODELS AND GLIDERS; AEROPLANE
DETAILS--Launching. Descending. Gliders. Models. Balancing. Weights.
Miscellaneous. Things to Look After. SOME AEROPLANES--SOME
ACCOMPLISHMENTS. THE POSSIBILITIES IN AVIATION--Case of the
Dirigible. The Orthopter. The Helicopter. Composite Types. What is
Promised. AERIAL WARFARE.
=AERIAL FLIGHT. Vol. 1. Aerodynamics.= By F. W. LANCHESTER. 8vo.,
cloth, 438 pp., 162 illustrations =$6.00 net=
=CONTENTS=: Fluid Resistance and Its Associated Phenomena. Viscosity
and Skin Friction. The Hydrodynamics of Analytical Theory. Wing
Form and Motion in the Periphery. The Aeroplane. The Normal Plane.
The Inclined Aeroplane. The Economics of Flight. The Aerofoil. On
Propulsion, the Screw Propeller, and the Power Expended in Flight.
Experimental Aerodynamics. Glossary. Appendices.
=Vol. II. Aerodonetics.= By F. W. LANCHESTER. 8vo., cloth, 433 pp.,
208 illustrations =$6.00 net=
=CONTENTS=: Free Flight. General Principles and Phenomena. The Phugoid
Theory--The Equations of the Flight Path. The Phugoid 1852-1872.
Dirigible Balloons from 1883-1897; 1898-1906. Flying Machine
Theory--The Flight Path Plotted. Elementary Deductions from the
Phugoid Theory. Stability of the Flight Path as Affected by Resistance
and Moment of Inertia. Experimental Evidence and Verification of the
Phugoid Theory. Lateral and Directional Stability. Review of Chapters
I to VII and General Conclusions. Soaring. Experimental. Aerodonetics.
=AERIAL NAVIGATION. A practical handbook on the construction of
dirigible balloons, aerostats, aeroplanes and aeromotors=, by
FREDERICK WALKER. 12mo., cloth, 151 pp., 100 illustrations
=$3.00 net.=
=CONTENTS=: Laws of Flight. Aerostatics. Aerostats. Aerodynamics.
Screw Propulsion. Paddles and Aeroplanes. Motive Power. Structure of
Airships and Materials. Airships. Appendix.
=AEROPLANE PATENTS.= By ROBERT M. NEILSON. 8vo., cloth, 101 pp., 77
illustrations =$2.00 net=
=CONTENTS=: Advice to Inventors. Review of British Patents. British
Patents and Applications for Patents from 1860 to 1910, arranged in
Order of Application. British Patentees, arranged alphabetically.
United States Patents from 1896 to 1909, arranged in order of issue.
United States Patentees, arranged alphabetically.
=THE PRINCIPLES OF AEROPLANE CONSTRUCTION.= By RANKIN KENNEDY, C. E.
8vo., cloth, 145 pp., 51 diagrams =$1.50 net=
=CONTENTS=: Elementary Mechanics and Physics. Principles of Inclined
Planes. Air and Its Properties. Principles of the Aeroplane. The
Curves of the Aeroplane. Centers of Gravity: Balancing; Steering. The
Propeller. The Hélicoptère. The Wing Propeller. The Engine. The Future
of the Aeroplane.
=HOW TO DESIGN AN AEROPLANE.= By HERBERT CHATLEY. 16mo., boards, 109
pp., illustrated (Van Nostrand's Science Series) =50 cents=
=CONTENTS=: The Aeroplane. Air Pressure. Weight. Propellers and
Motors. Balancing. Construction. Difficulties. Future Developments.
Cost. Other Flying-Machines (Gyroplane and Orinthoptere).
=HOW TO BUILD AN AEROPLANE.= By ROBERT PETIT. Translated from the
French by T. O'B. Hubbard and J. H. Ledeboer. 8vo., cloth, 131 pp., 93
illustrations =$1.50 net=
=CONTENTS=: General Principles of Aeroplane Design. Theory and
Calculation. Resistance, Lift, Power, Calculations for the Design of
an Aeroplane, Application of Power, Design of Propeller, Arrangements
of Surfaces, Stability, Center of Gravity, etc. Materials.
Construction of Propellers. Arrangements for Starting and Landing.
Controls. Placing Motor. The Planes. Curvatures. Motors.
=AIRSHIPS, PAST AND PRESENT. Together with chapters on the use of
balloons in connection with meteorology, photography, and the carrier
pigeon.= By A. HILDEBRANDT, Captain and Instructor in the Prussian
Balloon Corps. Translated by W. H. Story. 8vo., cloth, 361 pp., 222
illustrations =$3.50 net=
=CONTENTS=: Early History of the Art. Invention of the Air Balloon.
Montgolfieres, Charlieres, and Rozieres. Theory of the Balloon.
Development of the Dirigible Balloon. History of the Dirigible
Balloon, 1852-1872. Dirigible Balloons from 1883-1897; 1898-1906.
Flying Machines. Kites. Parachutes. Development of Military
Ballooning. Ballooning in Franco-Prussian War. Modern Organization
of Military Ballooning in France, Germany, England and Russia.
Military Ballooning in Other Countries. Balloon Construction and the
Preparation of the Gas. Instruments. Ballooning as a Sport. Scientific
Ballooning. Balloon Photography. Photographic Outfit for Balloon Work.
Interpretation of Photographs. Hectography by Means of Kites and
Rockets. Carrier Pigeons for Balloons. Balloon Law.
[Illustration: VAN NOSTRAND LOGO]