Saturday, January 19, 2013

History Of An Airplanes

Ever since man first saw a bird fly, man has wanted to fly. The first attempts were efforts to fly like a bird by attaching feathers to their arms and flapping. Those attempts were unsuccessful.

Hot Air Balloons
The first successful air flight was in a hot air balloon. In 1783 a few men invented the first flying machine by making the hot air balloon. A hot air balloon is a balloon filled with heated air. Since heated air is lighter than cool air, the balloon would rise into the sky. The pilot would ride in a basket attached to the balloon and control the height by adding and subtracting more heat.
The problem with hot air balloons is that you can not go the way you want. If the wind is blowing west, that means you would have to go west, too. During the Civil War hot air balloons were used by the armies to look at enemy troops.

First Airplanes
The first airplane that was flown was a glider. A glider is a non-motorized flying machine (and very hard to control.) Early gliders were launched from high places like cliffs and floated on the wind to the ground.
A man named Sir George Cayel made the first glider that actually flew. His first glider didn't have passengers or a pilot. It was too small and could not fit anyone in it. He made another that flew his coachman across a small valley. This glider was not launched from a cliff.
During 1890 while Orville and Wilbur Wright were working in a bicycle shop, the Wright Brothers got interested in flying. They learned that bicycles that were closer to the ground were faster. They read all the books they could find about airplanes to learn more. They then began building gliders near Kitty Hawk, North Carolina. The Wright Brothers improved the glider. In 1899 they made a large, two wing kite. After experimenting for a while on unmanned gliders, they made a glider where the pilot would control the airplane in the air. After working on glider experiments they found out how to steer a plane while in flight by developing a rudder (the tail of the plane) and flaps on the wings. With the rudder and the flaps, the pilot could control the direction of the airplane and the height.In December of 1903, the Wright Brothers became the first people to successfully fly a plane with a person in it. The plane flew one hundred twenty feet and flew only about twelve seconds. They had three successful flights that day, but Wilbur made the longest flight of 892 feet and stayed up for about 59 seconds. In 1903 the Wright Brothers made their first powered airplane that they named the "flyer." It was a biplane (two winged plane) that had a 12 horse power engine that they had built themselves. The wings were 40 feet wide, wooden, and covered with cotton cloth. The pilot would lay on the lower wing on his stomach and steer the plane. In 1908 the Wright Brothers finally made a plane that could fly for more that one and a half hours.

Improvements to Airplanes
In 1843 William S. Henson, an inventor, patented plans for an airplane after trying to build a model airplane. When those plans failed he gave up on airplanes. His friend, John Stingfellow, tried making a model off of Henson's model and succeeded. The plane launched, but could only stay in the air for a short time.
In 1890 Cl`ement Ader took off on the first steam powered plane (a plane with an engine, unlike the glider) that he had built himself. What was very unlucky about that was he could not fly it because he could not control it. Around the same time another inventor, Hiram Maxiam, built a steam powered flying machine. He tested his airplanes, but never really got them off the ground because they were too heavy and he could not control the flight.
During 1894 Samuel Langley flew a steam powered plane and went 0.8 kilometers in one and a half minutes. Once Langley made another airplane, he got a pilot to steer once on October, 7 and once on December, 8, but sadly the plane crashed in a lake.
U.S Army Lieutenant Thomas E. Selfridge was the first person killed in a plane crash. The military wanted to see how good the Wright Brothers` airplane was for flying. On September 17, 1908, Selfridge went up in a plane with Orville Wright. When they were 75 feet in the air a propeller broke. The plane crashed, which killed Thomas and left Orville injured, but the Wright Brothers still did not give up. In 1909, they got a contract from the military to build the first military plane.
In 1911, Calbriath Rodgers made the first flight across the United States. He flew from Sheepshead Bay, New York to Long Beach, California. During the 84 days of flying, Rodgers crashed at least 70 times. He had to replace almost every part of the plane before he reached Long Beach. All together this journey took 3 days, 10 hours, and 24 minutes of time spent in the air.
Airplane travel has improved a great deal since the first efforts of the Wright Brothers. Airplanes now travel thousands of miles at altitudes of more than 7 miles, carrying over three hundred passengers. Those passengers rest in comfortable seats instead of on their stomachs like Orville did. Jet engines have replaced propellers and speeds are greater than 600 miles per hour. Not even the Wright brothers could have imagined what air travel would be like today.

Skateboard

 Skateboarding was first started in the 1950s, when all across California surfers got the idea of trying to surf the streets. No one really knows who made the first board -- instead, it seems that several people came up with similar ideas at the same time. Several people have claimed to have invented the skateboard first, but nothing can be proved, and skateboarding remains a strange spontaneous creation.
These first skateboarders started with wooden boxes or boards with roller skate wheels slapped on the bottom. Like you might imagine, a lot of people got hurt in skateboarding's early years! It was a sport just being born and discovered, so anything went. The boxes turned into planks, and eventually companies were producing decks of pressed layers of wood -- similar to the skateboard decks of today. During this time, skateboarding was seen as something to do for fun after surfing.
Skateboarding is an action sport which involves riding and performing tricks using a skateboard. Skateboarding can also be considered a recreational activity, an art form, a job, or a method of transportation.Skateboarding has been shaped and influenced by many skateboarders throughout the years. A 2002 report found that there were 18.5 million skateboarders in the world. 85% of skateboarders polled who had used a board in the last year were under the age of 18, and 74% were male.
Skateboarding is relatively modern. Since the 1970s, skateparks have been constructed specifically for use by skateboarders, bikers and inline skaters.These first “skateboarders” started with wooden boxes attached to about a 30 inch two-by-four with roller skate wheels attached at the on the bottom. It was a sport just being born and discovered, so anything went. The boxes turned into planks, and eventually companies were skateboarding companies were created who then started producing skateboard decks which consisted of pressed layers of maple wood — similar to the skateboard decks of today. During this time, skateboarding was seen as something to do as a warm up on the way to a surf spot or just for fun after surfing.
Skateboarding History Evolution
In 1963, skateboarding became a highly sought after hobby which is when its popularity peaked, and skateboard companies started holding skateboarding competitions. At this time, skateboarding was mostly either downhill slalom or freestyle competition. The kind of skateboarding tricks that were performed at this time looked almost completely different from what skateboarding looks like today! The style of skateboarding at the time was called “freestyle” and is more like dancing ballet or ice skating with a skateboard.
Then, in 1965, skateboarding’s popularity suddenly took a dive. Most people assumed that skateboarding was another fad that had died out. Skateboard companies started shutting down production, and those who were still dedicated to the sport had to again make their own skateboards from scratch. How to make a basic trick "ollie"? In brief:
  1. Place your feet
  2. Crouch at the knees
  3. Jump quickly and
  4. Pop hard at the same time
  5. Rise with the board
  6. Level it out a bit
  7. Start coming back down
  8. Land on the board and crouch your knees for balance
The key is to time leaving the ground with the pop of the tail.

In detail:

1. Place your feet
Put your back foot on the tail with the curve of your foot matched up with the curve of the tail.Put your front foot just in front of the midpoint of the board. The ball of your foot (just behind your big toe) should be over the middle of your board in the imaginary line between the bolts. Turn both feet to a duck stance with the heels just slightly closer than the toes. It looks like a ducks feet. Kind of pointed out a bit.

2. Crouch properly
To crouch down bend your knees and not your back. Crouch down a few inches, enough to jump off the board. You do not need to crouch down to the ground. You are not trying to jump the Empire State Building.

3. Start the jump
Once couched don’t waste time. Begin jumping and begin to pop the board like in the next step.
This is the tough part for timing. If you have practiced this part separately it will comemuch easier.

4. Pop hard
Straighten out the back leg and pull the front leg up so you can pop that tail hard. You will feel the snap through your whole body. It feels good!

5. Rise with the board
Suck your legs up to get height. Bring your knees up to your chest in the air.

6. Level it out a bit
Nearing the full height start pointing your front foot down. Straighten the front leg a bit to level out with the back foot. It will make the back foot stick better when you raise you back foot up higher. If you have leveled the front down then the back will stick and rise up with your foot.

7. Start coming back down
Point the front foot more, lift the back foot and hold for a fraction of a second.

8. Land on the board and stay on
Straighten the legs and push the board back to the ground. Just stay over the board now and get your feet and wheels back down on the ground.
When the wheels get to the ground bend your knees to adsorb shock and keep your balance.

If you follow all of these steps you will have done an ollie. It may not be big but that comes with practice.
The key is to time leaving the ground with the pop of the tail.