Jet-Propelled Water-Entry Buffer Device with Gas Recycling

The patent employs a pneumatic buffer system consisting of a buffer chamber filled with gas (nitrogen or air) that compresses during water-entry impact to absorb kinetic energy. The gas pressure dynamically adjusts to match the impact force, providing superior load reduction capacity compared to rigid hydraulic structures. The buffer chamber is positioned between the head fairing and the vehicle body, allowing the gas to compress and expand cyclically during impact, thereby reducing peak forces on the vehicle structure.

The patent uses composite material structures in the head fairing and buffer chamber components. The head fairing incorporates composite materials that can deform controllably during impact to absorb energy, while the buffer chamber uses composite sealing materials that maintain pressure integrity. This composite approach enables both high load reduction capacity and structural integrity without excessive complexity.

The patent implements prior cushioning by positioning a gas-filled buffer chamber between the head fairing and the vehicle body before water-entry occurs. The buffer chamber is pre-filled with nitrogen or air at atmospheric pressure, creating a compression cushion that activates during impact. This beforehand cushioning allows the head fairing to maintain its structural integrity while the gas buffer absorbs the impact energy, preventing severe damage to the vehicle body.

The gas-filled buffer chamber acts as an intermediary element between the head fairing and the vehicle body. During water-entry impact, the gas compresses to absorb kinetic energy, serving as a mediator that transfers force gradually rather than directly transmitting the impact shock to the vehicle structure. This intermediary mechanism protects the vehicle while allowing the head fairing to maintain its protective function.

The patent replaces traditional mechanical buffer structures with a pneumatic system. The buffer chamber contains gas that compresses during impact, providing dynamically adjustable load reduction capacity. The pneumatic system responds automatically to impact forces without requiring complex mechanical linkages or multiple stages of buffering, achieving high productivity with reduced overall complexity.

The patent utilizes parameter changes in the gas state (pressure, volume, temperature) to achieve variable load reduction capacity. As the gas compresses during impact, its pressure increases dynamically to match the impact force, providing optimal cushioning at each moment of the impact process. This parameter-based approach enables high load reduction capacity through a relatively simple system compared to mechanical alternatives.