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Afin de rendre la bible des ailes delta accessible au plus grand nombre, cette dernière peut être consultée en Français ou en Anglais.
Si vous souhaitez apporter votre contribution au développement de la bible des ailes delta, vous pouvez nous aider à traduire les commentaires fait par d'autres utilisateurs, dans les deux langues.

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Deltaplane Deltaplane : Vulcan
Français Envoyer traduction
English I worked at the Electra Flyer factory when this glider was being developed. It was an attempt at a bowsprit glider to compete with similar designs from other manufacturers. I seem to recall that it lacked pitch stability and had too much spiral instability for comfortable thermalling. Its sink rate was also unacceptably high, according to the test pilots I talked to at the time. At any rate, it was not a successful design, and never saw production.

Deltaplane Deltaplane : Spirit
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English Introduced in 1980, the Spirit was the successor to the Floater, with a simplified sail cut but retaining the Floater's general planform and hinged cross-spar. The sink rate suffered somewhat from the modifications, but it was fairly maneuverable and easier to launch and land than its predecessor. I owned and flew one of these about a year and a half, accumulating many hours of mountain thermalling, before selling it to buy a Flight Designs Javelin, which was better suited to dune soaring.

Deltaplane Deltaplane : Floater
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English Designed primarily by Tom Price (with some input from Tom Peghiny and Larry Newman) and released in 1979, the Floater was Electra Flyer's first attempt at a glider to compete with the Moyes gliders and La Mouette's Atlas, both of which employed light wing loading to achieve a low sink rate while still offering some glide at speed. While it achieved both goals, it turned out not to be competitive with its rivals. It remained in production for a year, being replaced with a somewhat smaller version called the Spirit which, while it did not have the Floater's sink rate, was more maneuverable and easier to fly.

The largest size floater was a popular tandem glider in the early 1980s.

Deltaplane Deltaplane : Plank
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English Being discussed:

Deltaplane Deltaplane : Space
Français Envoyer traduction
English Easiest hang glider to land that I have ever flown. Period.

Deltaplane Deltaplane : Eclipse
Français Envoyer traduction
English This glider was designed by Jean-Michel Bernasconi and Bob England, and was manufactured not by Airwave but by Pacific Windcraft in Salinas, California. It was produced from 1985 to 1988. It is possible that some sails were sold to Airwave and fitted to locally-produced airframes. (This was certainly done with the Eclipse's successor, the Mark IV, which was called the "Calypso" in Europe. By that time, Pacific Windcraft entered into partnership with Airwave and became Pacific Airwave.)
The Eclipse was, without a doubt, the lightest-handling glider I have ever flown. It could easily be steered with one hand in steady winds! It was also the hardest glider to stall that I have ever flown. Even when it was close enough to stall speed to "mush," I could still get a controlled turn out of it when I needed to, without a tip stalling. I test-flew dozens of them when I worked for PW, and found them lacking only in glide at speed.

Deltaplane Deltaplane : Demon
Français Envoyer traduction
English For the record, the Demon was also made under license from Hiway by Flight Designs of Salinas, California. The American version also served as the wing for the "Jetwing" trike also produced by Flight Designs. After Flight Designs was bought out by Pioneer Parachute in 1982, some sails were made by the latter company. These were highly inferior to the original versions, and can be identified by the use of straight-stitch seams rather than zig-zag seams.

Deltaplane Deltaplane : Vision
Français Envoyer traduction
English This was not an Airwave glider, although Airwave did produce later versions of the Vision Mark 4 and Vision Pulse under the "Calypso" name. It was produced by Pacific Windcraft, of Salinas, California, from 1982 to 1985, when it was replaced by the Vision Eclipse. At one point, a few Vision sails were shipped to manufacturers in England and France, where they were fitted onto locally made airframes.

The Vision was the first double-surface glider to use a harder cloth for the main body and a softer cloth for the double surface, a configuration that allowed for higher camber at the loads experienced in landing. This resulted in a glider that was nearly as easy to land as a single-surface glider while providing a speed range more characteristic of a double-surface glider.

It was designed by Jean-Michel Bernasconi, with some help on the sail from me, as I was the head sailmaker for Pacific Windcraft.

Deltaplane Deltaplane : Sierra
Français Envoyer traduction
English The Seagull Sierra, designed in 1980 by Tom Peghiny, was Seagull's only double-surface glider. I do not believe it was ever offered for sale, as Seagull went defunct before the glider was HGMA certified. I remember a few prototypes flying in 1980; these were reported to have good performance but poor handling characteristics, possibly due to a very tight sail and insufficiently flexible airframe.

Deltaplane Deltaplane : Seagull 4
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English The Seagull 4 was almost identical to the Seagull 3. The most conspicuous difference was a cambered, S-shaped keel instead of a straight tube. I believe it also had a two-piece swept-back cross-brace rather than a single tube.
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