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Pyramid Parachute

Parasol type

Conical parachute

Pack-style parachute

Round parachutes

Square parachutes

Ram-air parachutes

Ribbon/Ring Parachute

In its basic sense, a parachute is neither made for travel and sports, it was created to increase safety while descending from a certain altitude. It is a medium to delay the pull of gravity from earth when deployed form higher altitude.

In short, it makes the dropping of an item, a person or equipment vertically or diagonally slower by reducing the amount of dragging force while maintaining a balance so that the item would remain safe until it reaches the ground. Early physicists have made use of this principle and newer develops in parachuting technology led to the creation of various types of parachutes.

Early types of parachutes

Parasol type – Though not strictly called parachutes, the parasols were commonly used by performers in China to create a slow falling effect onstage.

Conical parachute – Possibly the earliest form of parachute is the conical shaped-parachute which appeared during 1470s in Italy preceding the design conceptualized by Leonardo da Vinci. As an escape device, this type of parachute was intended to allow people to get safely on the ground from burning buildings. However, there are no written records whether this parachute was ever used for that purpose.

Pyramid Parachute – Another design by Leonardo da Vinci, this parachute was conceptualized in Milan during the early part of 1480. It was a canopy that is supported by light wood held by a square bottom frame.

Pack-style parachute – This is the predecessor of all parachutes that are stored in casings these days.

Round parachutes – A basic drag device, round parachute is used in various settings like medical missions, cargo applications and military operations. While being described commonly as round in shape, the parachute actually resembles a dome or a jellyfish. This has been among the most popular type however; present-day parachutists don’t normally use this kind of parachute.

The earliest round parachutes were circulars with flat surfaces that made them unstable, thus causing a number of deaths and injuries on parachutists. To add more stability, military round parachutes were made parabolic or conical in shape.

There are two types of round parachutes- steerable and non-steerable. Like ram-air parachutes, non-steerable parachutes can’t be maneuvered to

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Aikido means "The Way of Harmony with the Spirit" and is considered a non-violent form of martial art. However, don’t be fooled. Aikido when used correctly is very powerful often are able to block and neutralize strong attacks and counter them with an equal force.

Morihei Ueshiba, now known as O-sensei to the world of Aikido, founded the martial art. O-sensei is a master of Jujitsu or unarmed combat, Kinjitsu or sword combat, and sojitsu or spear combat and studied philosophical and religious teachings.

Because of the religious and philosophical foundations of Aikido, principles of the martial art include ways to harmonize with the ki or spirit within oneself and the bigger spirit of nature. Among the principles of Aikido include oneness, circular motion and ki.

Among the philosophical teachings of Aikido, one of the more basics and more important is learning to control oneself. Maintaining an inner balance is necessary to harmonize with others enabling to control an opponent’s attack or applying an effective technique. Self-control is the key to achieve and maintain harmony.

The Principle of Oneness is another basic principle in Aikido. An aikidoka must learn to become one with any situation. Becoming one means having an attitude of respect for all things and situations, friend or foe. By training to become one with every situation, harmonization will follow and it will become possible to execute Aikido techniques, movements and forms accurately and efficiently.

Harmony also means synthesis. And the spiritual circle which is a foundation of all Aikido techniques synthesizes everything. Aikido is a combination of circular movements. Its techniques and movements revolve around the concept of circular motions. When an opponent attacks, the aikidoka uses a circular motion of the lower abdomen to control the attack and execute Aikido techniques to counterattack.

It is said that defense is the greatest offense. In Aikido to defend properly an attack, one must learn to move away from the range of effectiveness of the opponent’s attack. However, as you try to defend by getting out of the opponent’s effective range, you must also try to maintain your own range of effectiveness in order to counterattack efficiently.

You won’t be able to give an effective counterattack if you stepped too far away from your opponent. Similarly, being too close would definitely lessen the effectiveness of your techniques. Everything will depend on the situation. As an Aikido practitioner, you must learn to determine how to avoid your opponent’s range while controlling your own in various situations.

Finally, the Principle of Ki involves believing that every thing in the universe is governed by a force or spirit.