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August 21, 2008

History Myths and Legends of Ornithopters and Helicopters

Do you know that one of the first designed or at least imagined flying machines was the ornithopter. In essence, when mankind gazed at the skies, he saw that the birds were flying and thus mankind realized if he wanted to have the domain of the skies, he would have to fly like a bird. Thus since the dawn of the civilization, mankind with, its quest for dominion over nature, has tried to repeat the design and the behavior of the natural flying species. Besides the mankind’s formal history, the legends go back far describing the mankind’s quest for flying.

The first reference to an ornithopter and a real reference to flying is in the legend of Daedalus and Icarus. When Icarus was held captive by the Gods on top of a mountain fortress, he used big wings tethered to his body by wax. However because he flew too close to the sun, according to the legend his wings melted away from his body and he plunged into the deep abyss of death. Although it is a tragic myth, it symbolizes the quest for the man’s attempt to fly and thus control the forces of nature.

As mankind advanced further and further, throughout history there were lots of trials and designs for flying machines. In order to establish flying, mankind looked at the only available example of flying: namely the birds. Thus, everyone was trying to copy the designs of the birds to design a flying machine that paralleled their development: The Ornithopter. In essence, an ornithopter was a machine that had birdlike wings and a place for the operator to be attached. The operator would flap his arms and the wings of the ornithopter would be flapped also. In essence, mankind would fly by simulating the flapping of the bird’s wings. However, since the principles of aerodynamics was not discovered, no one was aware of the ratio of the wing to muscle power and thus all of these projects and attempts were doomed to fail.

Perhaps the most serious thoughts came from the famous thinker and designer Leonardo Da Vinci. He drew many representations of the birds to correctly understand the principle. Thus, as a result he designed may ornithopters design and a helicopter design which was a vehicle that can take off vertically from a ground y the use of blades that are horizontal to the ground. In fact, it can be said that an ornithopter is the father of helicopters.

During the history of mankind there were hundreds of ornithopter and even helicopter designs which never had a chance of flying off the ground. Especially the 19th century was filled with many inventors competing for the design of the successful ornithopter. In fact even the great inventor Thomas Edison tinkered with an ornithopter ad even received a patent (although the design was not feasible and thus it never got off the ground). When it was realized that the power to flap the wings was just not enough in humans, new designs were introduced that utilized mechanical energy for flying. In 1870, the French inventor Gustave Trouve designed an ornithopter that received its power to flap wings from an internal combustion engine. The flight was a partial success as the ornithopter that he designed flew 70 meters off the ground.

The final result was that although people tried to fly ornithopters, it just wasn’t a viable aerodynamic design. Although in the 20th century some successful ornithopters were built, it was discontinued as an idea. Then the power to flight was concentrated on glided flight (not flapped wings flight) and thus the Wright Brothers were able to fly creating a huge industry in the 20th century. However, the efforts for the Ornithopter were not in vain, as it was in principle the founding stone of the helicopter.

Walkera HM 510 Easy to Fly Helicopter + Spare Craft!
US $46.45 (14 Bids)
End Date: Friday Jan-09-2009 14:20:00 PST
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E-FLIGHT BLADE mCX MICRO ELE HELICOPTER ( JAN=E=02028 )
US $111.00 (14 Bids)
End Date: Friday Jan-09-2009 14:24:18 PST
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ESKY ESMART 600 HELICOPTER
US $152.50 (3 Bids)
End Date: Friday Jan-09-2009 14:27:02 PST
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NEW IN BOX Lego City 7738 Helicopter Coast Guard
US $19.99 (1 Bid)
End Date: Friday Jan-09-2009 14:30:25 PST
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Helicopter Pilots Licence Flight Training DVD FAA PPL
US $14.95 (1 Bid)
End Date: Friday Jan-09-2009 14:40:16 PST
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See also

Bird Watching Activities     Helicopters For Sale     Parachuting     Sports Planes For Sale

 

August 14, 2008

The Initial Engine Powered Flight 1903

Orville and Wilbur Wright, by June 1903, have completed the design and construction of their power machine. The Flyer’s wingspan was just over 40 feet, over an area of 510 square feet and weighed 625 pounds. The brothers built as much as they could in Dayton, Ohio, and then shipped the rest to Kitty Hawk, NC for the final assembly.

The brothers departed for Kitty Hawk, NC on Sept. 23rd and arrived at Kill Devil Hill, 2 days later. While they were waiting for the shipment, they repaired the hangar and construct a new shop. After the shipment was delivered, the Wrights took 3 weeks to construct the Flyer. Everything they did, they practiced gliding using the 1902 glider, gliding longer hours and increasing the control the glider.

Weather that day was cold and stormy-horrible. They had been working on assembly and had the Flyer completed early in November. November 5, the brothers tested the engine. The result was not pleasing. The motor almost did not work as had been expected. Its excess vibration damaged shafts, which was shipped to Dayton for repairs.

They tested the motor again on November 28. Again they had issues with a crack in the propeller shaft. Orville returned to Dayton, to construct new shafts of spring steel firm.

On December 12 the Flyer is ready for the flight, but the wind was too light for takeoff. They did not want a flight on Sunday; because they told their father they would never fly on the Sundays. Their first attempt at powered flight would be on Monday, Dec. 14.

They threw a coin to choose who would be the pilot. Wilbur won and climbed onto the Flyer. After a difficult start, it began to scoot down the rails, and then began to rise from its path. Wilbur misjudged and turned up too early, without realizing the efficiency of the rise. The Flyer rose slightly, stalled, and then came to rest near the foothills. The machine had slight damage. Nevertheless, the Flyer had flown off of the ground under its own power, which was a hopeful start. Both the brothers were positive that the machine would fly.

The repairs took a couple of days, and the flyer was ready again late December 16. Dawn of December 17 had a stout wind blowing in from the northeast and rain pounding down. The brothers had to wait till 10am, hoping the winds would die a little. When it didn’t, they chose to continue anyway. They sent signals to the rescue station to come help them carry their Flyer area top of the hill.

It was now Orville’s time to fly; he climbed up into the Flyer. It rose rapidly once they had estimated the power of the rise. For the first time, a motorized flying machine took off from the ground; it traveled under the control of its pilot.

Not pleased, the brothers wanted to again try. They had to repair the runners’ cracks, and at nearly 11:20, Wilbur then made the second flight travel nearly 175 feet.

With the assistance of the rescue crew, they then carried the Flyer to its original starting point and again tried. Orville made their third flight, twenty minutes later, and landed nearly 200 feet from its start point.

The fourth attempt began at almost noon; Wilbur was at the controls. The flight started like any other-with the Flyer pitching upwards and downwards. After about 300 feet, Wilbur regained control and began to travel on the same secure course. It proceeded in this manner until he had gotten about 800 feet. Then, the new Flyer began to buck and suddenly dove into the ground. The front was badly damaged, but the body was intact. He had traveled close to 852 feet in about 59 seconds.

After lunch, the two brothers contacted their father, “Successful four flights Thursday morning with average speed through the air of thirty one miles”.

Today, for many people is a smaller private airplane very popular whith all the freedom involved.

Experimental Quickie Airplane
US $3,000.00 (1 Bid)
End Date: Friday Jan-09-2009 16:43:48 PST
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experimental airplane
US $3,410.00 (23 Bids)
End Date: Saturday Jan-10-2009 15:46:32 PST
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1972 Cessna C-172 Airplane
US $18,300.00 (3 Bids)
End Date: Saturday Jan-10-2009 16:03:18 PST
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74 Bellanca Super Viking Airplane, Aircraft, Vehicle
US $32,100.00 (23 Bids)
End Date: Saturday Jan-10-2009 20:34:18 PST
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1995 CHALLENGER II ULTRALIGHT AIRPLANE - NICE MACHINE !
US $6,303.00 (7 Bids)
End Date: Sunday Jan-11-2009 15:30:00 PST
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1947 AERONCA SCOUT LSA LIGHT SPORT AIRCRAFT AIRPLANE
US $17,100.00 (7 Bids)
End Date: Sunday Jan-11-2009 19:38:52 PST
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1979 CESSNA 172 SKYHAWK AVIATION AIRPLANE IFR PLANE
US $15,600.00 (19 Bids)
End Date: Monday Jan-12-2009 17:50:37 PST
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1953 Cessna 180 - Sweet Flying Airplane
US $50,000.00 (1 Bid)
End Date: Tuesday Jan-13-2009 14:32:23 PST
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ANTIQUE Timm Wood Wooden Fahlin Airplane Propeller NR
US $1,075.00 (17 Bids)
End Date: Tuesday Jan-13-2009 17:16:13 PST
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Cessna 180 single engine airplane
US $25,200.00 (3 Bids)
End Date: Wednesday Jan-14-2009 17:24:14 PST
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Wacken Open Air 2009 Ticket - SOLD OUT!!!
US $152.50 (5 Bids)
End Date: Sunday Jan-18-2009 17:41:24 PST
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