Two biplanes flying through the clouds.

Airplanes

Two biplanes flying through the clouds.

This illustration shows three different views of the 1915 Caproni Type C A-4 Triplane.

Caproni Type C A-4 Triplane, 1915

This illustration shows three different views of the 1915 Caproni Type C A-4 Triplane.

This illustration shows three different views of the Curtis Model 18-I Triplane. It has a 400 horsepower K-12 engine.

Curtis Model 18-I Triplane

This illustration shows three different views of the Curtis Model 18-I Triplane. It has a 400 horsepower…

This illustration shows three different views of the Curtis Model J N 4-B Military Tractor.

Curtis Model J N 4-B Military Tractor

This illustration shows three different views of the Curtis Model J N 4-B Military Tractor.

This illustration shows three different views of the De Haviland 4 Reconnaissance Plane. This plane has a 400 horsepower Liberty Engine.

De Haviland 4 Reconnaissance Plane

This illustration shows three different views of the De Haviland 4 Reconnaissance Plane. This plane…

This illustration shows three different views of the Farman Type F-60 Tourist Aerobus. This plane held 20 passengers and had a 520 horsepower engine.

Farman Type F-60 Tourist Aerobus

This illustration shows three different views of the Farman Type F-60 Tourist Aerobus. This plane held…

This illustration shows the basic parts and construction of a flying boat.

Flying Boat

This illustration shows the basic parts and construction of a flying boat.

An illustration of Langley's flying machine. A, Large airplane; b, small airplane; c, propelling screws.

Langley's Flying Machine

An illustration of Langley's flying machine. A, Large airplane; b, small airplane; c, propelling screws.

An illustration of Santos Dumont's flying machine.

Santos Dumont's Flying Machine

An illustration of Santos Dumont's flying machine.

An illustration of Sir H. Maxim's Flying Machine.

Sir H. Maxim's Flying Machine

An illustration of Sir H. Maxim's Flying Machine.

This illustration shows three different views of a Handley-Page Twin Liberty Motored Type O 400 Bomber.

Handley-Page Twin Liberty Motored Type O 400 Bomber

This illustration shows three different views of a Handley-Page Twin Liberty Motored Type O 400 Bomber.

A flying machine invented by William Henson in the mid-19th century. Although numerous attempts were made to fly the machine, all were unsuccessful.

Henson's Flying Machine

A flying machine invented by William Henson in the mid-19th century. Although numerous attempts were…

This illustration shows three different views of the Lawson Type C-1 Twin Liberty Motored Aerial Transport.

Lawson Type C-1 Twin Liberty Motored Aerial Transport

This illustration shows three different views of the Lawson Type C-1 Twin Liberty Motored Aerial Transport.

This illustration shows three different views of the NC. 4 Flying Boat. It has a 1600 horsepower engine.

NC. 4 Flying Boat

This illustration shows three different views of the NC. 4 Flying Boat. It has a 1600 horsepower engine.

This illustration shows the basic parts and construction of a typical biplane.

Typical Biplane

This illustration shows the basic parts and construction of a typical biplane.

This illustration shows the basic parts and construction of a typical monoplane.

Typical Monoplane

This illustration shows the basic parts and construction of a typical monoplane.

An early helicopter concept.

Villard's Helicopter

An early helicopter concept.