UP International About us. The wing is optimised for flying it in the middle of the weight range.
Second advice: If you are stuck in between two sizes and are wondering whether you should fly the smaller size in the top third of the weight range, or the larger size in the bottom third of the weight range, proceed as follows: Experienced pilots should simply choose what they are used to. If you generally prefer to be loaded with more weight than less, go for the smaller size. If you prefer upscaling, it is also no problem to fly the bigger size, really a question of preference.
The wing will still be fast and the handling precise. If you have owned a UP wing of the previous generation up to and including the Summit XC, the Trango XC, the Kantega XC and the Edge or any of the Targa models and are looking for boosted, more accurate and crisper handling, you will want to fly in the top section of the weight range.
If you want it to be closer to the feeling of the predecessor, you may prefer to choose the larger size. Also, if you are mainly flying in the flatlands and are stuck in between two sizes, you may want to choose the larger one. This approach is based on good knowledge management and helps a product line and brand progress.
It also helps keeping existing customers happy, giving them the feel good factor they are used to, while gaining new ones by adding a new touch.Gliders are as small and light as possible.
Since there is no large engine taking up space, gliders are basically sized around the cargo they carry, usually one or two people. The cockpit of a single-seat glider is small, but it is large enough for most people to squeeze into. Instead of sitting upright, pilots recline with their legs stretched out in front of them. The frontal exposure of the pilot is reduced and the cross-sectional area of the cockpit can be substantially smaller.
Gliders, along with most other aircraft, are designed to have skins that are as smooth as possible to allow the plane to slip more easily through the air. Early gliders were constructed from wood covered with canvas.
Later versions were constructed from aluminum with structural aluminum skins that were much smoother. However, the rivets and seams required by aluminum skins produce additional drag, which tends to decrease performance.
In many modern gliders, composite construction using materials such as fiberglass and carbon fiber are quickly replacing aluminum. Composite materials allow aircraft designers to create seamless and rivet-less structures with shapes that produce less drag.
If you look at a glider next to a conventional powered plane, you'll notice a significant difference in the wings. While the wings of both are similar in general shape and function, those on gliders are longer and narrower than those on conventional aircraft. The slenderness of a wing is expressed as the aspect ratio, which is calculated by dividing the square of the span of the wing by the area of the wing.
Glider wings have very high aspect ratios -- their span is very long compared to their width. This is because drag created during the production of lift known as induced drag can account for a significant portion of the total drag on a glider.
One way to increase the efficiency of a wing is to increase its aspect ratio. Glider wings are very long and thin, which makes them efficient. They produce less drag for the amount of lift they generate. Why don't all planes have wings with high aspect ratios? There are two reasons for this. The first is that not all aircraft are designed for efficient flight. Military fighters, for example, are designed with speed and maneuverability well ahead of efficiency on the designer's list of priorities.The greater glider Petauroides volans is a large gliding marsupial found in Australia.
It is not closely related to the Petaurus group of gliding marsupials but instead to the lemur-like ringtail possum Hemibelideus lemuroideswith which it shares the subfamily Hemibelideinae.
The greater glider is nocturnal and is a solitary herbivore feeding almost exclusively on Eucalyptus leaves and buds. The greater glider is found in eucalypt forest from Mossman, Queenslandto Daylesford, Victoria. The head is short with a pointed muzzle and their large ears are fringed and backed with long fur. Each side of the body bears membranes stretching between the elbow and the ankle that give the animal the ability to perform controlled glides.
This is in contrast to other gliding marsupials such as the sugar glider that have gliding membranes stretching from the wrists to the ankles. The feet have strongly recurved claws to grip onto bark or other surfaces. There are five toes on each foot; the first toe on the hind foot and the first two toes on the fore foot are opposable.
The fur is soft and up to 60 millimetres 2. Body mass varies clinally from 1, grams 3.
Heat management in the greater glider is performed by licking extremities and the ventral body surface, and direct evaporation is the main method of cooling. It can also use its gliding membranes to reduce heat loss by increasing the layer of insulation at the skin surface. The glider is not well equipped to handle high ambient temperatures as it inefficiently uses water for evaporation via salivation despite arboreal habitats often having limited water accessibility.
The glider can digest low nutrient foliagespecifically eucalypt leaf matter, which contains a variety of phenolic and terpenoid compounds and a high concentration of lignified fibre.
Mature females will give birth to a single joey each year which is typically born in late autumn or early winter. The underdeveloped offspring will then spend the next four months within the pouch of the mother to suckle and develop, and will remain within the security of the pouch until nine months of age.
The greater glider is found in southern Queensland eastern Australia,  southeastern New South Wales and the montane forests of the Victorian central highlands. There are two recognised subspecies: .
The greater glider chooses habitat based on several factors, the dominant factor being the presence of specific species of eucalypt.A glider is a special kind of aircraft that has no engine.
There are many different types of gliders. Paper airplanes are the simplest gliders to build and fly. Balsa wood or styrofoam toy gliders are an inexpensive vehicle for students to have fun while learning the basics of aerodynamics. Hang-gliders are piloted aircraft having cloth wings and minimal structure. Some hang-gliders look like piloted kiteswhile others resemble maneuverable parachutes. Sailplanes are piloted gliders that have standard aircraft parts, construction, and flight control systems, but no engine.
The Space Shuttle returns to earth as a glider; the rocket engines are used only during liftoff. Even the Wright Brothers gained piloting experience through a series of glider flights from to In flight, a glider has three forces acting on it as compared to the four forces that act on a powered aircraft. Both types of aircraft are subjected to the forces of liftdragand weight. The powered aircraft has an engine that generates thrustwhile the glider has no thrust.
In order for a glider to fly, it must generate lift to oppose its weight. To generate lift, a glider must move through the air. The motion of a glider through the air also generates drag. In a powered aircraft, the thrust from the engine opposes drag, but a glider has no engine to generate thrust. With the drag unopposeda glider quickly slows down until it can no longer generate enough lift to oppose the weight, and it then falls to earth. For paper airplanes and balsa gliders, the aircraft is given an initial velocity by throwing the aircraft.
Some larger balsa gliders employ a catapult made from rubber bands and a tow line to provide velocity and some initial altitude. Hang-glider pilots often run and jump off the side of a hill or cliff to get going.A hang glider is an unpowered heavier-than-air flying device designed to carry a human passenger who is suspended beneath its sail. Unlike other gliders that resemble unpowered airplanes, hang gliders look like large kites.
Other gliders are usually towed by a car a airplane or otherwise launched into the air from the ground. Hang gliders, on the other hand, are usually launched from a high point and allowed to drift down to a lower point. Human beings have attempted to fly using devices similar to hang gliders for at least one thousand years. Oliver of Malmesbury, an English monk, is said to have leapt from a tower with wings made of cloth in the year He supposedly glided for about ft m before landing and breaking both legs.
Similar brief flights are said to have been made in Constantinople in the eleventh century and in Italy in The Italian artist and scientist Leonardo da Vinci made detailed sketches of various flying machines, but these devices were never built.
The modern history of gliding begins with the English inventor Sir George Cayley. ByCayley had established the basic design for gliders that is still used today. Inhe flew his first successful model glider.
InCayley achieved the first successful human glider flight with a device that carried his coachman several hundred feet. The next important pioneer in glider research was the German inventor Otto Lilienthal. In the s, Lilienthal built 18 gliders, which he flew himself. He also kept detailed records of his work, influencing later inventors. After making more than two thousand successful flights, Lilienthal was killed in a crash in Inspired by Lilienthal, the American engineer Octave Chanute and his assistants made about two thousand glider flights from sand dunes on the shores of Lake Michigan at the turn of the century.
Chanute's work had an important influence on Orville and Wilbur Wright, who invented powered flight soon after. The rapid development of powered flight in the twentieth century led to a decreased interest in gliders until after World War II.
At this time, light, smooth wings made of fiberglass were developed for gliders.To build one is something. Building your own plane from pieces with bare hands and then seeing it soar in the sky can be the most satisfying personal experience. This article aims to provide you with all the concepts, workings and designing principles associated with balsa glider design. So that you can not only build but design your own glider according to your needs and preferences. A glider is a heavier-than-air aircraft that is supported in flight by the dynamic reaction of the air against its lifting surfaces, and whose free flight does not depend on an engine.
It is designed to glide after being towed aloft or launched from a catapult. In flight, a glider has three forces acting on it as compared to the four forces that act on a powered aircraft. Both types of aircraft are subjected to the forces of lift, drag, and weight. The powered aircraft has an engine that generates thrust, while the glider has no thrust.
For a glider to fly, it must generate lift to oppose its weight. To generate lift, a glider must move through the air. The motion of a glider through the air also generates drag.
In a powered aircraft, the thrust from the engine opposes drag, but a glider has no engine to generate thrust. With the drag unopposed, a glider quickly slows down until it can no longer generate enough lift to oppose the weight, and it then falls to earth.
For balsa gliders, the aircraft is given an initial velocity by throwing the aircraft. Some larger balsa gliders employ a catapult made from rubber bands and a tow line to provide velocity and some initial altitude. Pulling the glider aloft gives the glider a certain amount of potential energy. The glider can trade the potential energy difference from a higher altitude to a lower altitude to produce kinetic energy, which means velocity.
Gliders are always descending relative to the air in which they are flying. A small glider can be built with cheap and easily accessible material. Materials selected should be lightweight and tough because of obvious reasons. Balsa wood is mostly preferred because weight of the model is to be kept as minimum as possible. The special quality of this wood is that it is very light and hence adequate for our purpose along with the fact that it has good enough strength to not to breakdown away in wind.
Other required materials may include Metal ruler, suitable surface to cut onto, such as cutting mat, hot glue, glue stick, large elastic band, sticky tack.A glider is a fixed-wing aircraft that is supported in flight by the dynamic reaction of the air against its lifting surfaces, and whose free flight does not depend on an engine.
There is a wide variety of types differing in the construction of their wings, aerodynamic efficiency, location of the pilot, controls and intended purpose.
How Gliders Work
Most exploit meteorological phenomena to maintain or gain height. Gliders are principally used for the air sports of glidinghang gliding and paragliding. However some spacecraft have been designed to descend as gliders and in the past military gliders have been used in warfare. Some simple and familiar types of glider are toys such as the paper plane and balsa wood glider. Glider is the agent noun form of the verb to glide. The oldest meaning of glide may have denoted a precipitous running or jumping, as opposed to a smooth motion.
Scholars are uncertain as to its original derivation, with possible connections to "slide", and "light" having been advanced. Early pre-modern accounts of flight are in most cases difficult to verify and it is unclear whether each craft was a glider, kite or parachute and to what degree they were truly controllable. Often the event is only recorded a long time after it allegedly took place.
A 17th-century account reports an attempt at flight by the 9th-century poet Abbas Ibn Firnas near Cordoba, Spain which ended in heavy back injuries.
The first heavier-than-air i. Lilienthal was the first to make repeated successful flights eventually totaling over 2, and was the first to use rising air to prolong his flight. Using a Montgomery tandem-wing glider, Daniel Maloney was the first to demonstrate high-altitude controlled flight using a balloon-launched glider launched from 4, feet in The Wright Brothers developed a series of three manned gliders after preliminary tests with a kite as they worked towards achieving powered flight.
They returned to glider testing in by removing the motor from one of their later designs. In the United States, the Schweizer brothers of Elmira, New York, manufactured sport sailplanes to meet the new demand. Sailplanes continued to evolve in the s, and sport gliding has become the main application of gliders. As their performance improved, gliders began to be used to fly cross-country and now regularly fly hundreds or even over a thousand of kilometers in a day,  if the weather is suitable.
Military gliders were developed during World War II by a number of countries for landing troops. Foot-launched aircraft had been flown by Lilienthal and at the meetings at Wasserkuppe in the s. However the innovation that led to modern hang gliders was in when Francis Rogallo and Gertrude Rogallo applied for a patent for a fully flexible wing with a stiffening structure. The American space agency NASA began testing in various flexible and semi-rigid configurations of this Rogallo wing in in order to use it as a recovery system for the Gemini space capsules.
Charles Richards and Paul Bikle developed the concept producing a wing that was simple to build which was capable of slow flight and as gentle landing. Between and Barry Hill Palmer used this concept to make foot-launched hang gliders, followed in by Mike Burns who built a kite-hang glider called Skiplane. InJohn W. Dickenson began commercial production. January 10, American Domina Jalbert filed a patent US Patent on the Parafoil which had sectioned cells in an aerofoil shape; an open leading edge and a closed trailing edge, inflated by passage through the air — the ram-air design.
Testing was done by using ridge lift.simple Balsa glider construction with dimensions
Although their use is mainly recreational, unmanned paragliders have also been built for military applications e. Atair Insect. Gliders were developed from the s for recreational purposes.