Precise parafoil recovery system and method for safety control of landing area of booster

Abstract

The invention provides an accurate parafoil recovery system and method for safety control of a booster falling area, a sectional connection and separation and centralized layout design is adopted, an original integrated booster nose cone is divided into an end cap, a nose cone middle section and a nose cone bottom section, a stabilizing parachute is mounted in the end cap, and the stabilizing parachute is mounted in the nose cap. Other products of the recovery system are intensively mounted on the nose cone bottom section through a bearing structure, so that the problem of structural adaptability change of an existing booster is solved; the recovery system adopts a segmented homing control strategy of multiple target points and multiple obstacle avoidance areas, the drop point precision under the obstacle avoidance condition is improved, obstacle avoidance and accurate landing of the booster are achieved, meanwhile, the recovery system has two control modes, namely an automatic control mode and a ground manual control mode, redundant backup is achieved, and the system reliability is improved.

Description

technical field [0001] The invention belongs to the technical field of spacecraft return and deceleration landing design, and particularly relates to a parafoil accurate recovery system and recovery method for the safety control of the booster landing zone, which can realize the control of the booster landing zone and controllable safe recovery. It is also suitable for precise recovery of other aircraft. Background technique [0002] After the work of the launch vehicle booster, it usually falls to the ground without control. Before each launch, it takes a huge amount of manpower, material resources, and financial resources to organize the clearance and evacuation of the landing area of ​​more than 2,000 square kilometers, and ensure the safety of the landing area through evacuation. According to statistics, hundreds of thousands of people are evacuated due to rocket launches every year. With the increase in the frequency of my country's aerospace launches and the rapid dev...

AI Technical Summary

Problems solved by technology

For the recovery of boosters, foreign countries have carried out parachute recovery of solid boosters of the US space shuttle, Soviet "Energy" rocket boosters, and Ariane 5 rocket boosters, using a group of ordinary parachutes to decelerate Recycling, landing in the sea to salvage and recover, without considering the control of the landing area; in recent years, the heavy-duty Falcon rocket booster of SpaceX in the United States has adopted a thrust reverser engine for vertical landing and recovery, which is technically difficult and has great impact on the rocket propulsion system and control system. Higher requirements are put forward, and fuel is needed to adjust the rocket attitude and decelerate slightly, which has a great impact on the carrying capacity. About 20% of the carrying capacity is lost in sea recovery, and about 40% of the carrying capacity is lost in land recovery. In addition Not suitable for all application scenarios; In addition, foreign countries have also proposed a horizontal return scheme for boosters with wings, but they have been stuck in conceptual research

[0004] Once the traditional recovery system opens the parachute, the end cannot be controlled. Due to the influence of the height of the parachute opening and the current wind conditions in the landing area, the flight trajectory has the characteristics of "floating with the wind", the landing point is uncontrollable, and the spread range is large. Vertical recovery is not only technically difficult, but also cannot be used on active rocket boosters. It is difficult to meet the current safety control requirements of rocket booster landing areas in the process of tackling key technical problems in China.

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