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gnuA6 a - b - c

1
Figure 1. Planform 3D view

2
Figure 2. 3D view


1. DESCRIPTION

gnuA6 is a small variation on the gnuA series. The main difference is that the Model 6 uses 29 cells instead of 27, keeping the same moderate aspect ratio (4.3). The model gnuA6 has three lines options, called a, b , c. The option "a" is a conservative option using 4 lines for each riser (A=4, B=4+1, C=4). This is not common, but it provides an added structural strength. The option "b" will use conventional lines (A=3, B=3+1, C=3). The option "c" will use some special lines for use with a vario seat. This is not usual, but we want to experience again the concept of the vario seat, which provides a delicious control of the glider by shifting weight left-right and forward-back., despite some instability. We will also need to design, a vario seat to size.

2. TECHNICAL ESPECIFICATIONS gnuA6 a - b - c

Size
XS
S-M
M
XL+
Surface (m2)
22 m2
24 m2
26 m2
33 m2
Flat span (m)



11.91
Flat AR
4.30
4.30
4.30
4.30
Panels
29
29
29
29
Closed cells
5 (2.5 in each tip) 5 (2.5 in each tip) 5 (2.5 in each tip)
5 (2.5 in each tip)
Weight range (Kg)
45-65
50-75
70-100
95-125
Anchors per rib
4
4
4 4
Risers
3
3
3
3
Extrados and intrados
ripstop 40 gr/m2 ripstop 40 gr/m2 ripstop 40 gr/m2 ripstop 40 gr/m2
Ribs
ripstop 40 gr/m2 hard ripstop 40 gr/m2 hard ripstop 40 gr/m2 hard
ripstop 40 gr/m2 hard
Lines (m)



a:416
Vario seat
Yes (option c)
Yes (option c)
Yes (option c) Yes (option c)
Certification
No
No
No
No


3. DATA FILES AND PLANS

LEparagliding-3.15 input and output files. DXF 2D and 3D edited files, ready to build. PDF full report and plans. PDF ready to print in a A4 mosaic. Only size 33 m2 available (August 2021).

pre-procesor and leparagliding
data files
pre-data.txt  leparagliding.txt
Airfoils
gnua.txt  gnuat.txt
Output txt files
lep-out.txt lines.txt
PDF Design report and plans
20210803 gnuA6a-33.pdf
All files in one zip.
Includes DXF plans for size XL+
20210803 gnuA6a-33.zip

plans report gnuA6a-33

ribs
Ribs 1 to 6 ready to print in A4 mosaic (all ribs and panels inside available .zip file)

4. CONSTRUCTION

Not yet


LAB NOTE: Build a paraglider at home is a very complicated task (even simple skin), 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.

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