Method for improving parachute opening reliability of large ram-air parachute

Abstract

The invention aims to provide a method for improving the parachute opening reliability of a large ram-air parachute. The method comprises the steps of compressing and deflating a canopy in an accordion manner in the extension direction of the canopy, overlapping and smoothly laying the canopy, symmetrically dividing the smoothly laid canopy into a left half and a right half from the middle according to the number of air cells, folding the left half of the canopy by simultaneously and continuously folding an upper surface and a lower surface in the chord direction from a front edge to a rear edge along a Z-shaped route, folding loose parachute lines along a Z-shaped route, tying up the parachute lines by auxiliary lines, folding the canopy from the end of the upper surface to the ends of the parachute lines along a Z-shaped route, then putting the canopy into a parachute bag, separately restraining the ends of bag sealing line buckles by virtue of a left parachute line restraining partand a right parachute line restraining part, and symmetrically pulling, from the middle to two sides, the left parachute line restraining part and the right parachute line restraining part into line restraining sleeves at the upper end of the parachute bag. The method enables the canopy which is folded in a reverse direction to be unfolded in a forward direction in an orderly manner when the parachute is unfolded, thereby improving the parachute opening reliability, avoiding excessive increase in additional parts, and facilitating operation.

Description

technical field [0001] The invention belongs to the field of parachutes, and in particular relates to a method for improving the reliability of parachute opening of a large stamping parafoil. Background technique [0002] The stamped parafoil is a new type of parachute. It is a flexible aircraft similar to an airfoil that is sewn together by the upper and lower layers of the micro air permeability material. The initial state of the stamped parafoil is in a flexible state. The volume of the package after being folded by a certain procedure can be reduced to a few tenths or even a few hundredths of the unfolded volume. However, the opening mechanism of the stamped parafoil after folding is complicated, and the parachute opening performance will be restricted by the packaging method. Different packaging methods have a great impact on the parachute opening performance of the stamped parafoil, so it is necessary to design a method that can improve the parachute opening of the sta...

AI Technical Summary

Problems solved by technology

However, the opening mechanism of the stamped parafoil after folding is complicated, and the parachute opening performance will be restricted by the packaging method. Different packaging methods have a great impact on the parachute opening performance of the stamped parafoil, so it is necessary to design a method that can improve the parachute opening of the stamped parafoil Reliable folding method, reduce the reduction of parachute opening performance due to packaging, improve the reliability of parachute opening, and avoid system failure caused by abnormal parachute opening of stamping parafoil

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