Performance of Common Ship Launching Airbag Sizes
Ship launching airbags are widely used due to their flexibility, efficiency, and cost-effectiveness, ensuring safe and reliable vessel launching.
Their performance varies depending on diameter and ply layers, which affects load capacity and compression behavior.
Recently, a customer asked about the rated pressure and minimum bursting pressure requirement (1:4.5 ratio). In fact, according to common industry standards, the bursting pressure is generally 3 times the working pressure (1:3 ratio), which provides a sufficient safety margin in practice.
Below is a brief overview of the performance of several common airbag sizes.
Number of layers | Diameter(m) | Rated Pressure | Bearing capacity per meter (at 70% deformation and rated pressure) (Kn/m) | Min. bursting pressure (kpa) |
4 | 1.0 | 130 | 143 | 390 |
| 1.2 | 110 | 145 | 330 | |
| 1.5 | 90 | 148 | 270 | |
| 1.8 | 80 | 158 | 240 | |
| 2.0 | 70 | 154 | 210 | |
| 5 | 1.0 | 170 | 186 | 510 |
| 1.2 | 140 | 185 | 420 | |
| 1.5 | 110 | 181 | 330 | |
| 1.8 | 90 | 178 | 270 | |
| 2.0 | 80 | 176 | 240 | |
| 6 | 1.0 | 200 | 219 | 600 |
| 1.2 | 165 | 217 | 490 | |
| 1.5 | 130 | 215 | 390 | |
| 1.8 | 110 | 218 | 330 | |
| 2.0 | 100 | 220 | 300 | |
| 7 | 1.0 | 240 | 264 | 720 |
| 1.2 | 200 | 264 | 600 | |
| 1.5 | 160 | 264 | 480 | |
| 1.8 | 130 | 257 | 390 | |
| 2.0 | 116 | 255 | 348 | |
| The allowable deviation of rated working pressure is±5%; The allowable deviation of compressive deformation is ±2%. | ||||
| NOTE:The initial internal pressure is reference value. | ||||