Paragliders take off running start down the hair slope of a hill or mountain high. The wing is lifted up and filled the air. Formless pile nylon gets an aerodynamic shape that such a flight to even stay in the air, the wing must operate buoyancy, and it must move through air or sea air 'strujiti' around him. In aerodynamics it is entirely irrelevant. The flying wing was needed in moving the lower resistance and a greater buoyancy, enabling their aerodynamic shape. In the laminar flow of air particles struck the barrier (the so-called. deadlocked) disagree with each other, but meet again by passing obstacles. This means that the upper side wing airflow for a longer time must be faster than the flow from below.
Thus a difference in pressure between the upper and lower wing surface and begins to operate lift. based on this principle, all the wings that fly through the air, the bird to the jumbo-jet wings. The exceptions are the wings of insects wings waving high speed and jet fighter planes flying on the principle of strong turbine thrust. paragliders are managed as well as other aircraft (excluding helicopters used by special mechanics of movement through the air). Two commands that control the hands of the pilot pulled the last leaf edges or surfaces on the rear wing. If it is withdrawn only one side, there is increasing resistance and the party becomes slower, and the other is paramount. pulling on the strength of the command depends on the speed and turning radius bends. In parallel with withdrawal of command switches, and pilot weight in the system and link it to the side which wants to turn to perform.
Braking is achieved both commands to reduce the speed of the wings to the ground, but only to a certain limit, after which the wing stops and is coated in flight, when suddenly increases at the expense of horizontal vertical velocity. Such conditions are undesirable and should be avoided. Marginal rate of coated flight or so. Stalling in airline terminology, is about 20 km / h. The wing is a separate system can further accelerate and speed up the basic 36-40 km / h to 60 km / h, almost as fast as some high powered import vehicles. Here we come to the important characteristics of each wing for free flight, ie the ratio of horizontal and vertical velocity wings. In other words, finesse is the ratio of horizontal and vertical times that aircraft can be accomplished in calm air. This ratio in the modern wing ranges from 7:1 for recreational to nearly 10:1 in racing. This would mean that the wing with the initial height of 100 meters can fly in 700-1000 meters in distance.
For comparison, the subtleties of dragons go to 15:1, 20:1 and beetles, and sailboats up to 70:1. As in any aeronautical activity, and paraglide there are dangers. very flexible structures they must have good equipment, with some advantages (low weight and size, less preparation prior to takeoff) has shortcomings! They are mostly related to the possible collapse of the wing due to the pressure drop in the womb. This happens with adverse air flows and / or mishandling, or improper pilot reaction at some point. atmosphere never idle. The air that moves a spacecraft sometimes unpredictable - the arrival of atmospheric fronts (sudden changes in weather conditions), but also for the simple reason, such as warm air into the atmosphere during the day. On sunny days the sun's rays heat the earth's surface and ground heat that the air delivery over. At a certain point and under certain conditions come to the rising bubbles of warm air in the upper layers of the atmosphere, and when this process takes a constant stream, there was a so-called. vertical thermal flow or 'pillars'. This natural phenomenon used by birds since its foundation - sailing in the warm air flows upward to be maintained longer in the air.
The same phenomenon for the same reason and using all available aircraft. required for such flight experience and inexperienced flyers, and even those more experienced, the condition of air in the atmosphere can cause certain problems. The flexible construction and pressure drop in it may be partially or completely shut down (blow) wings. These situations are anticipated and subject to the pilots during the training are prepared and accustomed. Every situation can be resolved in a few seconds, and those in the most difficult 15-odd seconds. Do not help the pilot's correct reaction, in extreme cases, the reserve parachute opens. experience, not only in Croatia but also the world, saying that opening the reserve parachute is rare, and most of these cases applies to riders who fly very delicate wings. Proper training, proper procedures and full concentration during flight pilots to avoid any dangerous situations and fly with safety to my great satisfaction.