Flexible buffer unit for water rocket and water rocket device

By designing a flexible buffer unit for the water rocket and adopting a combined structure of main airbag, compression spring and puncture needle, the high cost and safety issues of liquid rocket recovery were solved. This enabled low-cost and low-risk rocket recovery simulation, simplified test preparation and maintenance, and ensured the stable landing of the rocket.

CN116839427BActive Publication Date: 2026-06-12NAT UNIV OF DEFENSE TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NAT UNIV OF DEFENSE TECH
Filing Date
2023-05-10
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

Existing launch vehicles struggle to achieve low-cost, low-risk, and high-safety liquid rocket recovery, and experimental equipment is susceptible to impact damage, resulting in high launch costs.

⚗Method used

Design a flexible buffer unit for water rockets, including a main airbag and a first buffer assembly. Utilizing a combination of compression springs and puncture needles, along with a controller and auxiliary supports, the airbag can be automatically inflated and ruptured to buffer the impact, protecting the rocket structure and instruments.

🎯Benefits of technology

It enables low-cost, low-risk simulation of liquid rocket recovery, improves safety and economy, simplifies test preparation and maintenance, facilitates the acquisition of various data, and ensures stable rocket landing.

✦ Generated by Eureka AI based on patent content.

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    Figure CN116839427B_ABST
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Abstract

The present application relates to a kind of flexible buffer unit for water rocket and water rocket device, wherein, flexible buffer unit, including: main gasbag, first buffer assembly is arranged on the main gasbag;The main gasbag is cylindrical in the inflation state, and the hollow passage is arranged in the center of the main gasbag and penetrates its upper and lower ends;Along the circumference of the main gasbag, the first buffer assembly is arranged with multiple on the outer side of the main gasbag at equal intervals, and the first buffer assembly is arranged in parallel with the axial direction of the main gasbag in the telescopic direction;The first buffer assembly is arranged adjacent to the upper end of the main gasbag.The present application can be inflated and unfolded automatically when a distance from ground, when gasbag is pressed down more than certain limit, the speed when rocket lands will be further reduced by first buffer assembly, and it provides stable guarantee for developing model rocket recovery research.
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