| 摘要 |
A pre-deployed parachute includes a double-drag balloon parachute with an inflation canopy and a first drag generating space, a universal joint attached to the double-drag balloon parachute by a universal joint, a pre-deployed canopy with a second drag generating space and attached to the universal joint, a load attached to the pre-deployed canopy. The inflation of the inflation canopy allows the pre-deployed canopy to be deployed without requiring height difference and any dynamic energy. With the buoyancy and the first drag generated by the double-drag balloon parachute and the second drag generated by the pre-deployed canopy, the pre-deployed parachute is capable of producing three drag forces, and therefore, the pre-deployed parachute can be brought to a stable condition within a very short time, which prevents the discomfort feeling of a sudden free fall at the beginning stage of the parachuting. |
| 主权项 |
1. A pre-deployed parachute comprising:
a double-drag balloon parachute being a symmetrical structure which is symmetrical with respect to a central axis and comprising an inflation canopy which defines a first drag generating space, the inflation canopy being formed with an inner inflation space, the inflation canopy is provided with a valve in communication with the inner inflation space, the inflation canopy including a peripheral wall which defines the first drag generating space, the first drag generating space including a first open end; a universal joint attached to the double-drag balloon parachute by a plurality of first cords, the first cords each having one end fixed to one end of the universal joint, and another end fixed to the double-drag balloon parachute, so that the double-drag balloon parachute is able to rotate with respect to the universal joint; a pre-deployed canopy including an arc-shaped top surface and an annular peripheral surface which defines a second drag generating space, the arc-shaped top surface being attached to a first end of the annular peripheral surface, and the second drag generating space having a second open end located at a second end of the annular peripheral surface, the pre-deployed canopy being attached to another end of the universal joint by a plurality of second cords which each have one end fixed to the pre-deployed canopy and another end fixed to the another end of the universal joint, so that the pre-deployed canopy is able to rotate with respect to the universal joint; and a load attached to the pre-deployed canopy by a plurality of third cords which each have one end fixed to the pre-deployed canopy and another end fixed to the load. |
