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Parachutes are fairly easy to make, as toy ones that is. However the parachutes that are made to use for real life is not as easy as you think. parachutes have gone through a lot of development but at the costs of several lives.

When you’re free falling thousands of feet up in the air you can fall like pot from a window and literally break when you smash into the ground. No one wants this to happen. parachutes have to made and prepared correctly. Fortunately modern designs have enabled safer and softer landings.

The shape of a parachute is very important. parachutes have come in different shapes through the years. Improvements have led to the creation of more stable ones in square shapes.

Shapes and surface area

The early forms before the modern design was invented were conically shaped. They were usually made up of cloth and wooden struts. The very first one was a conic shaped parachute stiffened by wooden struts in 9th century.

The inventor was able to make a landing from a tower in Cordoba and suffered only minor injuries. Leonardo da Vinci made sketches of them but there were no evidence that showed it was put to use.

It was also used for entertainment because it enabled people to jump and float to the ground which was very fascinating at that time. In China parasols were used for entertaining people. A breakthrough in the development was made when silk was used. This time parachutes were intended to be used for disembarking from a hot air balloon.

In 1783 the modern parachute was invented. The shape was round and was compared to the jellyfish. Its major use was in the military in World War I and II. It was given to artillery spotters and pilots. Unfortunately they were heavy in those times. Further developments lead to the creation of paratroopers. These were soldiers dropped into the enemy lines for attack.

There are variations to the round shape parachute. Additions were made for other purposes. Annular and pull down apex were round parachutes with suspension lines. Ribbon and ring designs on the other hand are made for deployment at super sonic speeds.

It later on developed into a cruciform or square shape which is also used in modern designs today. The design gave the parachute more stability. Further improvements enabled the passenger to steer the parachute to a landing site. Modern designs are called "Ram air" with parafoils that enable the skydiver to control the speed and direction of the parachute.

The shape of the parachute is important because of its relation to surface area.

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When an attacker is approaching, the person only has a split second to decide whether to dodge or block the move of the opponent. There is no point thinking about what this happened in the first place but the concern now is just to stop it.

In a fight, the person can make a counter attack in the hopes that the individual will be subdued. There is another way of course without resorting to force, which is the technique one can learn in aikido.

Aikido is a martial art in which the person blocks the moves of an opponent by using the hands. Anyone who wants to learn it will not be able to move as fast as Steven Segal in one of his action films but still be effective in combat.

This martial art cannot be learned by merely watching others do it in the movies or in television. There are some who even show the step by step process in a magazine but nothing still compares to learning it from a Sensei.

The person must first become a student in order to be called a master. This means learning the basic rules from entering the dojo until the class is over. The person will surely feel some pain after falling down a few times on the mat but this is not to torture the pupil.

This is all part of the training, which the student must also do properly in order to move into the more advanced classes.

One of the secrets is being able to know when to use it since timing is everything. There is a bit of hand to eye coordination just like in sports but here, the individual will merely redirect the same force back to that individual.

Another secret in using aikido has to do with the wrist. The person should be smooth enough to put one hand over the opponents to be able to make the technique work and counter the attack.

It takes a certain amount of energy to be able to perform certain moves. The individual will learn the various breathing exercises that will increase the heart rate and slow it down especially in the heat of the action.

The student should bear in mind that the breathing exercises also serves as a unifying force between the physical and the emotional aspect of the person.

The most important secret in mastering aikido is being consistent with the technique. The arms will surely feel heavy after some time or a certain amount of energy is drained after a few moves. By being able to do the same thing despite these difficulties, anyone can truly be called a true martial artist.

People who want to check on how well one is doing can sign up for Tomiki Aikido. This is a competition held by various clubs in which the student will compete among some of the best in the country.

Those who do well here can move up to the next skill