Powered Flight: First Attempts

BALLOONING was popular in the 1800s. And with gliders, people could actually soar on wings like birds. Yet balloons and gliders were hard to con­trol. They drifted with the wind. Inventors now began trying to achieve powered, controlled flight.

In 1852, Frenchman Henri Giffard attached a steam engine to a cigar-shaped, hydrogen-filled bal­loon. He called it a “dirigible," meaning steerable. Yet the airship’s steam engine was heavy and the craft proved slovr and still hard to maneuver. Others tried adding power to heavier-than-air flying machines. Many were bizarre contraptions. A few hovered or hopped briefly off the ground, but never flew.

In 1896, an American scientist, Dr. Samuel Langley, launched an unpiloted steam-powered model aircraft. It flew nearly a mile. Yet when Langley tried launching a large piloted version, it crashed on takeoff — twice. This seemed to prove what most people believed: flowered, pilot-con­trolled flight was simply impossible.

► Samuel PierpontLangley (1831,-1906)

Professor Samuel P. Langley, the third secretary of the Smithsonian Institution in Washington, D. C., was a respected astronomer. The public was stunned when his unmanned steam-powered model Aerodrome No. 5 flew over the Potomac River in 1896.

In 1903, Langley attempted to launch a full-size "Great Aerodrome" with a pilot aboard. The craft was equipped with a large new gasoline engine, but no real means of control. On two attempts at takeoff, the big Aerodrome s flimsy wings collapsed. The craft sank in the water "like a handful of mortar," a newspaper reported, dumping the unlucky pilot in the river.

Fun Fact: Leviathan

It

▼ Airborne! In this painting, the launching crew watch as Aerodrome No. 5 takes flight over the Potomac in May of 1896. This unpiloted model was the first powered craft of considerable weight to fly.

Wings on Wheels

Inspired by the Ferris Wheel, this early French flying machine was designed by the Marquis d’Equevihey. Its multiple wings were intended to increase lift. Instead, the machine proved too heavy to lift off

A, Early Triplane

A different attempt at multiple-wing design was this early French triplane. Although it looked more like an airplane, the craft could not fly either.

◄ Givaudan No. i

A third French invention, the aeroplane Givaudan No. 1 was a fanciful flying machine. Equipped with odd front and rear cyclinder wing sections, it never got off the ground.

< Aerodrome No. 5

This model of Langley’s Aerodrome No. 5 shows the machine’s tandem cloth wings, twin pusher propellers, and steam engine, in center. The No. 5 had a wingspan of about 13 feet, a fourth as big as the full – size Great Aerodrome.

The first powered flying machines used steam engines. Yet these were much too heavy and too weak to be practical for flying large aircraft. In the late 1800s, Otto Daimler invented the first gasoline engine. Eventually, lighter-weight and more efficient gas engines helped make manned powered flight possible.

Birdwatching Observing buzzards gave Wilbur his wing-warping idea."My observations of…buzzards,"he wrote,"leads me to believe that they regain their lateral bal­ance, when partly overturned by a gust of wind, by a torsion of the tips of the wings."

The First Flight On December 17,1903 at Kitty Hawk, North Carolina, Orville takes off in the Flyer, as Wilbur watches. The flight lasted 12 seconds and covered 120 feet. A beach lifeguard took this famous photograph.

► Pilot Control A model shows how Orville controlled the Flyer, today in the National Air and Space Museum. He moved his hips to control wing-warping cables and moved a lever with his hand to make the Flyer’s nose go up or down.

Fun Fact; Coin Toss

The brothers flipped a coin to see who would test-pilot the Flyer first. Wilbur won, but the Flyer stalled. Orville tried next, and the rest is history.

“Js/i І it astonishing that all these secrets hare been preserved for so many years just so we could discover them!!”

—Orville Wright, 1903

A How Wings Lift

An airplane’s wing produces lift by its curved shape, called an "airfoil "Air passing over the rounded upper surface rushes faster than air moving over the flat bottom surface. Ihis creates a low pressure area over the wing. The high pressure area under the wing pushes the wing upward.

Pedal Power

The Wrights attached model wings to a bicycle wheel, and turned it by pedaling to test the wings’ lift. The bicycle men believed a pilot could learn to control an aircraft much as a cyclist learns to balance and control a bike.

The key methods the Wrights used to achieve powered flight were: 1) wings to lift the plane; 2) an engine to propel the plane forward; and 3) movable surfaces, such as wing edges, for control. These are the same principles used to fly a Boeing 747 today.

M Time It!

Wilbur and Orville used this stop watch to time their historic flights at Kitty Hawk. On December 17,1903, the Flyer made four flights, the longest 852 feet in 59 seconds.

The Wrights were the first to realize an airplane propeller is really a small, twisted wing that rotates. They designed propellers of carved wood.