BDG Adam is the new EN/LTF-A certified wing, designed for beginners or leisure pilots from Bruce Goldsmith Design.
The BDG adam uses Durable Dominico D30 tissue constructs 34 enhanced clean cells into a safe, 4.8kg paraglider.
I believe smooth panels and uncorrupted ribs bring stability to my paragliders so I designed the BGD Adam with Cord Cut Billow (CCB). By adding CCB to the leading edge’s top panel the 3D bulge wraps around the rib without deforming it.
The Adam is the first glider of this level to which I have added mini-ribs on the trailing edge. Normally large celled paragliders without mini ribs have a lot of billow near the trailing edge and around the brake fold. When this billow is folded down with a brake input everything gets pulled out of shape. Mini ribs reduced the billow around the brake fold creating more responsive brake input and a cleaner brake fold.
The BDG Adam comes in a lot of color. We have found that being seen in the air and on the ground is safe for instructors and new pilots. Bright colors help.
BRUCE'S NOTES
I have been designing paragliders since 1990 and this is by far the best EN-A glider I have ever made. Back in those days, the Black Magic DHV-1 was designed from a basic parachute with unsupported cells and square box cell design. It worked but needed improvement.
Over the years we have come a long way. CCB and mini-ribs creates fitted 3D cells, unsupported cells are supported with diagonal ribs and span wise bands clean up the bottom surface. All this new technology has greatly improved the safety and performance of beginner wings.
For the BDG Adam I believe I have found the best combination of simplicity and technology. It launched really easy, flies responsively, and has the highest safety rating available. I would even let my kids fly it.
MATERIALS
Top surface: Dominico N30
Bottom surface: Dominico N30
Internal structure: Dominico D30 DFM
Nose reinforcing: Plastic wire 2,3mm and 2,7 mm
Risers: 20 mm black Nylon webbing
Pulleys: Sprenger HS
Top lines: DSL70
Middle lines: TSL 140
Lower lines: TSL 280
Brakes: DSL70
SPECIFICATIONs
| |
S |
M |
ML |
L |
|
| Linear scaling factor |
0.94 |
1 |
1.05 |
1.10 |
|
| Projected area |
18.56 |
21.00 |
23.15 |
25.41 |
m² |
| Flat area |
22.09
|
25.00 |
27.56 |
30.25 |
m² |
| Glider weight |
4.3 |
4.9 |
5.4 |
5.9 |
kg |
| Total line length |
243 |
275 |
303 |
333 |
m |
| Height |
6.30 |
6.67 |
7.00 |
7.80 |
m |
| Number of main lines |
3/4/3 |
3/4/3 |
3/4/3 |
3/4/3 |
A/B/C |
| Cells |
34 |
34 |
34 |
34 |
|
| Flat aspect ratio |
4.465 |
4.465 |
4.465 |
4.465 |
|
| Projected aspect ratio |
3.22 |
3.22 |
3.22 |
3.22 |
|
| Root cord |
2.82 |
3.00 |
3.14 |
3.29 |
m |
| Flat span |
9.96 |
10.59 |
11.12 |
11.65 |
m |
| Projected span |
7.73 |
8.22 |
8.64 |
9.05 |
m |
| In-flight weight range |
55-75 |
70-92 |
90-110 |
105-130 |
kg |
| Trim speed |
38 |
38 |
38 |
38 |
km/h |
| Top speed |
50 |
50 |
50 |
50 |
km/h |
| Min sink |
1.0 |
1.0 |
1.0 |
1.0 |
m/sec |
| Best glide |
8.0 |
8.0 |
8.0 |
8.0 |
|
| Certification |
EN/LTF-A |
EN/LTF-A |
EN/LTF-A |
EN/LTF-A |
|
