The Wright brothers invented the first successful airplane in 1903. By 1902, Wilbur and Orville Wright had invented the first successful glider and were focused with designing and building the first airplane that could gain sustained flight.Know More
In order to do this, the Wright brothers had to invent a propulsion system that would enable the airplane to sustain its flight. During the spring and summer of 1903, they tested numerous different ideas before finally successfully testing the first working airplane on December 17, 1903. At Kitty Hawk, N.C., the brothers completed four successful flights, marking a pivotal moment in the genesis of modern aeronautics.
Compared to today's engines, the Wright brothers had an extremely crude propulsion system that used four horizontal inline cylinders. It didn't use any fuel pumps, carburetors or spark plugs. It produced a mere 12 horsepower, which was actually four more horsepower than the brothers calculated they would need in order to successfully gain sustained flight.
With no fuel pumps, the gasoline was fed through the engine through the simple force of gravity, fed from a small tank that could only contain a quart and a half of fluid. The gasoline would enter a small chamber that was situated right next to the cylinders. As the gasoline mixed with the air, the aluminum crankcase used heat to evaporate the gasoline and air, allowing it to pass through and power the cylinders.The engine was made out of lightweight aluminum, a material that would go on to become essential to airplane technology.Learn more about Inventions
The first working loudspeaker was invented by Alexander Graham Bell who incorporated the device into his other famous invention, the telephone. Bell was awarded the patent for the telephone in 1876 with the loudspeaker device included in the patent. However, the initial concept for the loudspeaker device was first developed in 1874 by a German inventor named Ernst W. Seimens.Full Answer >
The comb is such a basic human tool that historians have no way to know who the inventor of the first comb was. Combs that have been found by archaeologists have been located in settlements from 5,000 years ago in Persia.Full Answer >
The modern bullet is based on a version invented in 1826 by Henri-Gustave Delvigne, a French infantry officer. Delvigne's bullet had a spherical shape and was rammed into a breech's rifling grooves.Full Answer >
The oldest pocket knife, or "jack knife," ever discovered dates back to around 600-500 BC. It was unearthed in Hallstatt, Austria, and it features a single blade with a bone grip.Full Answer >