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Ripcord (skydiving)
A ripcord is a part of a skydiving harness-container system; a handle attached to a steel cable ending in a closing pin. The pin keeps the container closed and keeps the spring-loaded pilot chute inside. When the ripcord is pulled, the container is opened and the pilot chute is released, opening the parachute. On tandem systems the ripcord releases the 3-ring release system anchoring the bridle to the harness-container, allowing the parachute to open. The ripcord was invented in 1914 by Tiny Broadwick. See also * Pullstring A pullstring (pull string, pull-string), pullcord (pull cord, pull-cord), or pullchain (pull-chain, pull chain) is a twine, string, rope, cord, or chain wound on a Spring (device), spring-loaded spindle (tool), spindle that engages a mechanism ( ... References Parachuting {{Air-sports-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skydiving
Parachuting, including also skydiving, is a method of transiting from a high point in the atmosphere to the surface of Earth with the aid of gravity, involving the control of speed during the descent using a parachute or parachutes. For human skydiving, it may involve a phase of more or less free-falling (the skydiving segment) which is a period when the parachute has not yet been deployed and the body gradually accelerates to terminal velocity. For cargo parachuting, the parachute descent may begin immediately, such as a parachute-airdrop in the lower atmosphere of Earth, or be significantly delayed, such as in a planetary atmosphere where an object is descending "under parachute" following atmospheric entry from space, and may begin only after the hypersonic entry phase and initial deceleration that occurs due to friction with the thin upper atmosphere. History Common uses Parachuting is performed as a recreational activity and a competitive sport, and is widel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Handle (grip)
A handle is a part of, or attachment to, an object that allows it to be grasped and manipulated by hand. The design of each type of handle involves substantial ergonomic issues, even where these are dealt with intuitively or by following tradition. Handles for tools are an important part of their function, enabling the user to exploit the tools to maximum effect. Package handles allow for convenient carrying of packages. General design criteria The three nearly universal requirements of are: # Sufficient strength to support the object, or to otherwise transmit the force involved in the task the handle serves. # Sufficient length to permit the hand or hands gripping it to reliably exert that force. # Sufficiently small circumference to permit the hand or hands to surround it far enough to grip it as solidly as needed to exert that force. Specific needs Other requirements may apply to specific handles: * A sheath or coating on the handle that provides friction against th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steel Cable
Steel wire rope (right hand lang lay) Wire rope is several strands of metal wire twisted into a helix forming a composite ''rope'', in a pattern known as ''laid rope''. Larger diameter wire rope consists of multiple strands of such laid rope in a pattern known as ''cable laid''. In stricter senses, the term ''wire rope'' refers to a diameter larger than , with smaller gauges designated cable or cords. Initially wrought iron wires were used, but today steel is the main material used for wire ropes. Historically, wire rope evolved from wrought iron chains, which had a record of mechanical failure. While flaws in chain links or solid steel bars can lead to catastrophic failure, flaws in the wires making up a steel cable are less critical as the other wires easily take up the load. While friction between the individual wires and strands causes wear over the life of the rope, it also helps to compensate for minor failures in the short run. Wire ropes were developed starting with mi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pilot Chute
A pilot chute is a small auxiliary parachute used to deploy the main or reserve parachute. The pilot chute is connected by a bridle to the deployment bag containing the parachute. Pilot chutes are a critical component of all modern skydiving and BASE jumping gear. Pilot chutes are also used as a component of spacecraft such as NASA's Orion. Deployment methods Spring-loaded The spring-loaded pilot chute is used in conjunction with a ripcord. When the user pulls the ripcord, the container opens, allowing the pilot chute compressed inside and loaded with a large spring inside it to jump out. Spring-loaded pilot chutes are mainly used to deploy reserve parachutes. They are often also used to deploy the main parachute on skydiving students' parachute equipment. They are also commonly used in drogue parachute in cars or in planes such as the B52 Bomber. Pull-out The pull-out and throw-out pilot chutes are identical in construction; the difference is in their connection to th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parachute
A parachute is a device used to slow the motion of an object through an atmosphere by creating drag or, in a ram-air parachute, aerodynamic lift. A major application is to support people, for recreation or as a safety device for aviators, who can exit from an aircraft at height and descend safely to earth. A parachute is usually made of a light, strong fabric. Early parachutes were made of silk. The most common fabric today is nylon. A parachute's canopy is typically dome-shaped, but some are rectangles, inverted domes, and other shapes. A variety of loads are attached to parachutes, including people, food, equipment, space capsules, and bombs. History Middle Ages In 852, in Córdoba, Spain, the Moorish man Armen Firman attempted unsuccessfully to fly by jumping from a tower while wearing a large cloak. It was recorded that "there was enough air in the folds of his cloak to prevent great injury when he reached the ground." Early Renaissance The earliest evidence f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tandem Skydiving
Tandem skydiving or tandem parachuting refers to a type of parachuting, skydiving where a student skydiver is connected to an instructor via a harness. The instructor guides the student through the whole jump from exit through freefall, canopy piloting, piloting the canopy, and landing. The student needs only minimal instruction before making a tandem jump with the instructor. In the United States most skydiving centers and clubs require that you be 18 years or older to skydive whereas in other countries the minimum age can be lower or higher. This is one of three commonly used training methods for beginning skydivers; the others being Static line, Instructor-assisted deployment (IAD), and Accelerated freefall (AFF) (k). Tandem skydiving is a very popular training method for first time skydivers, but it is more expensive than a static line. It exposes first-time jumpers to skydiving with minimal expectations from the student. The training may consist of many of the activities ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
3-ring Release System
The 3-ring release system is a parachute component that is widely used by sport skydivers and military freefall parachutists to attach the two risers of a main parachute to the harness that bears the load under the parachute. Invented in its original large ring form by Bill Booth, and subsequently scaled down for thinner Type 17 webbing risers the three-ring system allows a skydiver to quickly cut-away a malfunctioning main parachute with a single motion. Skydivers usually need to do this quickly during emergencies in which they need to deploy a reserve parachute. The three-ring system is simple, inexpensive, reliable, and requires fewer operations than earlier parachute release systems while reducing the physical force needed. The large bottom ring is securely attached to the skydiver's harness, the middle ring is securely attached to the end of the parachute riser, and the small ring is securely attached to the parachute riser above the middle ring. The middle ring is passed thr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tiny Broadwick
Broadwick ready to drop from a Glenn Martin.">Glenn_L._Martin.html" ;"title="Martin T airplane piloted by Glenn L. Martin">Glenn Martin. Georgia Ann "Tiny" Thompson Broadwick (April 8, 1893 in Oxford, North Carolina – 1978 in California), or Georgia Broadwick, previously known as Georgia Jacobs, and later known as Georgia Brown, was an American pioneering Parachuting, parachutist and the inventor of the ripcord. She was the first woman to jump from an airplane, and the first person to jump from a seaplane. Biography Born to parents George and Emma Ross on April 8, 1893, Georgia Ann Thompson weighed only 3 pounds. The last of seven daughters, Georgia was given the nickname "Tiny" due to her small size, as she weighed only and was tall. At age 12, Tiny Broadwick had married and, at 13, had a daughter, Verla Jacobs (later, Poythress) (1906–1985). Tiny Broadwick was an abandoned mother working in a cotton mill, aged 15, when she saw Charles Broadwick's World Famous Aeronauts p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pullstring
A pullstring (pull string, pull-string), pullcord (pull cord, pull-cord), or pullchain (pull-chain, pull chain) is a twine, string, rope, cord, or chain wound on a Spring (device), spring-loaded spindle (tool), spindle that engages a mechanism (engineering), mechanism when it is force, pulled. It is most commonly used in toys and motorized equipment. More generally and commonly, a pullstring can be any type of string, cord, rope, or chain, attached to an object in some way used to pull or mechanically manipulate part of it. Toys Perhaps the simplest pullstring toy is the yo-yo (c. 460 BCE). The Jumping jack (toy), jumping jack is a more complicated animated puppet paper doll that uses a pullstring to move its arms and legs up and down. Trompos and some spinning tops use a string that is wound around the top and then pulled to make it spin. More recent toys include dolls, such as Chatty Cathy (1959), Charmin' Chatty (1963), Talking Tamu (1970), Look Around Crissy (1972), Sky Dan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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