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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, and airfoilt set to 18% thickness, keeping the same moderate aspect ratio (4.3). Calage initial set at 25% in a "fast" configuration. Only two lines levels to simplify preflight preparation. 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
Cells
 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: 340 m
 a: 355 mm
 a: 370 m
 a: 416 m
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-3.16 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 available in size 33 m2.

Size
 S
 S-M
 M
 XL+
pre-procesor and leparagliding
data files
 leparagliding.txt pre-data.txt  leparagliding.txt pre-data.txt  leparagliding.txt pre-data.txt  leparagliding.txt
Airfoils
 gnua.txt  (x 0.9) gnua.txt  (x 0.9)
 gnua.txt (x 0.9)
 gnua.txt  gnuat.txt
(x 0.9)
Output txt files
 lep-out.txt lines.txt lep-out.txt lines.txt lep-out.txt lines.txt lep-out.txt lines.txt
PDF Design report and plans
 20211212 gnuA6a-22.pdf 20211127 gnuA6a-24.pdf 20211127 gnuA6a-26.pdf 20211212 gnuA6a-33.pdf
All files in one zip.
Includes DXF plans
 20211212 gnuA6a-22.zip 20211127 gnuA6a-24.zip 20211127 gnuA6a-26.zip 20211212 gnuA6a-33.zip
( Includes PDF A4 mosaic ready to print)

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


5. CAPTURES

1 Captura_2021-10-10_12-23-54
Captura_2021-10-10_12-23-54
 2 Captura_2021-10-10_12-24-44
Captura_2021-10-10_12-24-44
3 Captura_2021-10-10_12-25-51
Captura_2021-10-10_12-25-51
 4 Captura_2021-10-10_12-26-29
Captura_2021-10-10_12-26-29
5 Captura_2021-10-10_12-27-17
Captura_2021-10-10_12-27-17
 6 Captura_2021-10-10_12-27-40
Captura_2021-10-10_12-27-40


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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