le

gnu-A 20 m2

gnua 20 m2 design
Troyer's design for gnu-A 20 m2

gnu-A 20 m2 is the project started by Alexander Troyer in Pittsburgh, PA (USA). Based on
gnu-A but in size XS (20 m2) and some other modifications. Scale factor used for new new plans is about K=0.860344 (20=k*k*27,02). Download complete plans here. Read more about scale changes here.

Parameters:

27 cells
4.3 moderate aspect ratio
20 m2 surface, large (XS size)
20
% thicker profile "gnuA" based on gnuLAB3 airfoil

The construction of this
prototype is being using space and machinery of a "Techshop". Asking the constructor, about what is a Tecshop?. This is his answer:


"It is like a very large factory space, with many different machines of many types, but they don't manufacture anything specific, it is only machinery for people to come in and use for their own projects. You can become a member, pay a monthly fee, and take classes on machines that are in the facility. After being cleared for safety on the machines, a member can use them to make whatever they want. There is a website here:  http://www.techshop.ws/ which shows some equipment and videos. Regarding Paragliding equipment, they have industrial sewing machines, sergers, and "walking foot" type sewing machines".

Some
photographs on the construction process:

1
1. Panels rolled
1
2. Plotted ribs
1
3. Ribs ready tu cut
1
4. Panels cut
1
5. Rib template
1
6. Colors design for lower surface, very special.
6
6

6
7
1
8
6
9


All photos by Alexander Troyer

LAB NOTE: Build a paraglider at home is a very complicated task , and requires many hours of work. Previous experience is required, and very inventive. As always remember that: The free flight implies risks that can only be known and they can be controled with a suitable formation on the part of a recognized school. Not test wings without knowing their functioning. The construction and test of experimental wings without certifying requires deep knowledge of what is being made.

index laboratori d'envol