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Wing delta

Ala_delta

A wing delta flies according to the same principles that an airplane. It is a glider that can be transported, be taken off and be landed with the only help of the legs of the pilot. This sport is based on the advantage of thermal ascending air currents or that with a wing delta, fly by the principles that are applied to any airship, are made up of a candle sustained in an aluminum structure in whose center it goes suspended the pilot by means of a harness and normally it adopts a prone position, directing the wing delta by means of pendular shifts of position consequently move the center of gravity. The pilot can stay in flight during long periods and realise acrobatics.

The beginning of the flight is had to produce on foot, from a mountain or hill, in the reduction the full air candle and forms a camera with sufficient lift force to reduce the reduction. or with the help of some mechanical equipment for the repair from the ground (winch or drags airship on the other). So that a wing delta is considered as so, also there is to be demonstrable that with her is able to take off and to land against in conditions of security with a speed of wind the same or minor to 1 m/s.

 

If the wing delta flies in ascending airflow, the pilot will be able to take advantage of it to much more remain in flight time and to realise all type of acrobatics.
The hot or thermal air masses are great hot air bubbles that take place when warming up the sun the ground providing to the wing delta an extra height
The wing delta only flies when the airflow passes through its surface of sustenation to sufficient speed then the wing delta stays forming an angle with the airflow. Angle of incidence is called and has great importance in the technique of the free flight. A wing delta usually does not develop beyond a speed of 80 km/h. Geography and Meteorology are basic in the free flight. The today technology allows the pilots to realise flights until of 800 kilometers of distance and remaining in flight several hours.

Category of wings delta according to the FAI:

Class 1: wings delta with one structure rigid primary “flexible” on which the pilot only exerts control by means of the displacement of his weight. Secondary controls of regulation are allowed and fits, as long as they operate of symmetrical form on both flat. “The flexible” wings, the most used, have a structure formed by a series of tubes of aeronautical aluminum or carbon fiber, and by a series of brhelped steel cables of high resistance that serve as elements of union between the tubes. Some screws, nuts of security, pins, rivets, thimbles, pulleys, cordinos and tapes of mooring complete the structure.
The candle, or fabric, is constructed with weaves of very resistant plastic materials to the mechanical efforts and erosion and the deterioration produced by the fold and the sunlight. The different cloth from the candle is sewn with thread of Polyester. The candle is mounted and holds on the structure, and its final form is obtained introducing the sabers in its corresponding covers during each operation of assembly of the wing. These sabers are fine aluminum tubes, curved in agreement with the aerofoil profile that is desired has the wing in each of its sections.

Class 2: wings delta with one structure rigid primary that count on movable aerodynamic surfaces as essential means of control around any axis. Its volume confers major rigidity once packed, is greater more and its lifted price. This type of wings, within which they are the Swift, is in the market for very few years and in Spain they are very few

 

The competition main objectives are:

In line straight distance
Gain of height
Distance until a stated objective
Time and distance in a triangular circuit

The weight of the set, goes up to around the 31 or 32 kg and their dimensions come to be from about 10 M.s of spread distances of an end of a wing to the end of the other and about 4 M.s from the nose to the back end of the keel. The wing area can go of the 10 ms ² to the 21 ms ²; For tandem flights (pilot and passenger) the candles are greater, the smallest candles use them the pilots of very little weight, or pilots of competition.
The packed wing is a cylinder of about 35 cm. of diameter with a length of 5 or 6 M.s
As far as the price the thing can vary much. The initiation wings, that are cheapest, bring them to you of the factory, with the colors that you choose, by some 400,000 or 500,000 pesetas.

Material of essential flight. a harness, that takes a parachute in emergency, a helmet
€ or 500 can oscillate between 300 €.

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