Parachute opening method of large-area cluster parachute system

Abstract

The invention relates to a parachute opening method of a large-area cluster parachute system. An extraction parachute is only connected with one pilot parachute; through a connecting mechanism, the pilot parachute is connected with a plurality of parachute pack connecting ropes which are in one-to-one correspondence to parachute packs; each parachute pack connecting rope is connected to the top ofthe corresponding parachute pack; each parachute pack is connected to the top of a corresponding main parachute through a corresponding control rope; a folding and sewing part is arranged on each control rope, and can extend for a certain distance by the tension; before parachute opening, each main parachute, each control rope and each parachute pack connecting rope are stored in the corresponding parachute pack; during parachute opening, after a loading platform is extracted from a cabin by the extraction parachute, the whole system is lifted and each main parachute is drawn out from the corresponding parachute pack by the resistance generated by the pilot parachute; and after the control ropes are straightened, each folding and sewing part is ripped up, and in the process of ripping, the pulling force generated by the pilot parachute is transmitted to the parachute top of each main parachute, so that the top of the main parachute is straightened, and air inflation is started until stable landing is completed. According to the parachute opening method disclosed by the invention, during parachute opening, the top of each main parachute is straightened, so that the collapse of thetop of each main parachute is avoided, besides, the distance between every two main parachutes is limited, and the angle between every two main parachutes is reduced.

Description

technical field [0001] The invention belongs to the field of air-drop parachutes, and particularly relates to a parachute opening method for a large-area group parachute system. Background technique [0002] The large-area group umbrella system is mainly used in the airdrop of heavy equipment, such as figure 1 As shown, it is an existing method of opening a large-area group umbrella system. Each parachute is connected to a guiding umbrella on the top, and the umbrella can be inflated and fully inflated by pulling the umbrella top of each parachute through the guiding umbrella. In application, this method of opening the umbrella has the following problems: 1) After the umbrella canopy is pulled out of the umbrella bag, the bottom edge of the canopy cannot be inflated to the top of the canopy. 2) Before the group umbrellas are inflated, the opening of the umbrellas is inconsistent, and after the group umbrella system is fully expanded, there will be a problem that the angle b...

AI Technical Summary

Problems solved by technology

[0002] The large-area group parachute system is mainly used in the airdrop of heavy equipment, such as figure 1 As shown, it is the parachute opening method of the existing large-area group parachute system. A guide parachute is connected to the top of each parachute, and the parachute can be fully inflated by pulling the top of each parachute through the guide parachute. In application, this method of opening the umbrella has the following problems: 1) After the canopy is pulled out from the umbrella bag, the inflation at the bottom of the canopy has no time to pass to the top of the canopy, and under the weight of the canopy, the canopy top collapses rapidly, which is easy 2) Before the group parachute is inflated, the parachute opening is inconsistent. After the group parachute system is full, there will be a problem that the angle between the main parachute is too large, so the loss of drag coefficient is relatively large

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