| 摘要 |
An improved lifting device is composed of three-layer soft tough airtight material with low density. A middle layer material and an innermost layer material are surrounded by an outermost layer material. Compressed air is filled in space surrounded by the outermost layer material and the middle layer material to expand the outermost layer material to form smooth streamline. The lifting device can maintain better streamline in high-speed flying process to reduce flying resistance. The structure of the lifting device is improved, so as to ensure that the lifting device is expanded easily after being inflated and the volume of a large cavity will not be reduced significantly to increase the load weight of the lifting device.
|
