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Paragliding Weather the Virga Phenomenon

Posted by Martin Havel on

Paragliding Weather the Virga Phenomenon

Have you noticed how sometimes streaks “hang” from under the clouds? This phenomenon is called virga, it can often appear under cumulonimbus clouds. It is the same rain, but it evaporates before reaching the surface of the earth. The reason for this is low ambient humidity. That is, dry air in the way of drops tends to saturate with moisture and "absorbs" them. So the rain simply evaporates on the way to the earth. Due to the evaporation, the surrounding air becomes colder - a cold air mass goes down and suppresses new air flows rising under the cloud. This...

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Why is humid air lighter than dry air?

Posted by Martin Havel on

Why is humid air lighter than dry air?

The weight of air is affected by the amount of humidity in the air. It would seem that the water is heavier than the air and that water should make the air heavier, but it's not how it looks. Contrary to often a popular belief, humid air is lighter than the dry air providing that both have the same temperature and pressure. Let's have a look at why.The molecular mass of dry airN2 - molecular mass 28 - content in the air 78%O2 - molecular mass 32 - content in the air 21%Mass of the gas mixture (28x78/100) + (32x21/100)...

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How To - AlfaPilot Factory Reset Step by Step

Posted by Martin Havel on

How To - AlfaPilot Factory Reset Step by Step

Backup Before going ahead with the factory reset, please back up any data or files that you would like to keep. You can connect your AlfaPilot to your computer the same way as an external USB hard drive. User Manual Here is a link to the User Manual in case you need any extra information. Factory Reset From your home screen select Applications > Settings > Factory Reset, Optional: Delete all files, generally there is no need to delete all data After Reset STEP 1 Select the Language Set Up the time zone, date and time Connect to Wifi Network Demo mode > Deactivate (For User)...

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How is Porcher Skytex 27 Classic II different from standard Skytex 27 Classic?

Posted by Martin Havel on

How is Porcher Skytex 27 Classic II different from standard Skytex 27 Classic?

It might get ambiguous at times to understand what material has been used on your paraglider. There are often subtle differences in generations, models and treatments of each fabric. The Skytex 27 is currently considered as the lightest paragliding fabric on the market. The Skytex 27 CLASSIC has been initially developed for mountain lovers and ultralight paragliders, SKYTEX 27 CLASSIC has gradually found its place in the design of other paragliding. To follow its development Porcher Sport offers now a more comprehensive product line in order to meet the market demand for lighter weight paragliders. The Skytex 27 CLASSIC II is a...

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Why is the length of paragliding lines changing?

Posted by Martin Havel on

Over time the length of the paragliding lines will change depending on the environment, style of flying and type of materials used for the lines. Paragliding manufacturers use two types of materials for the lines.

  • Aramid. The advantage of this material is being light while offering a good resistance to shocks, abrasion and heat. This material has a remarkable tensile and mechanical properties. On the other hand, aramid lines are sensitive to UV rays and moisture.
  • Dyneema. A disadvantage of this material is shortening with age. An advantage of this material is being very resistant to traction (low elasticity) and is not as sensitive to ultraviolet and moisture.

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