Guide plate functional surface imitating Laval nozzle structure and manufacturing method thereof

Abstract

The invention discloses a guide plate functional surface imitating a Laval nozzle structure and a manufacturing method thereof. The surface of a guide plate is a super-hydrophilic surface, and a plurality of guide arrays are uniformly arranged on the surface of the guide plate; the guide array comprises a plurality of structural units with the surfaces being super-hydrophobic surfaces, the guide array is in a Laval nozzle cross section shape, and the guide array is gradually widened in the flow guide direction of the flow guide plate and then gradually narrowed in the flow guide direction of the flow guide plate. The guide plate functional surface has guiding and positioning characteristics, the surface tension flowing process can be strengthened, and the propellant supply efficiency of the surface tension storage tank is comprehensively improved.

Description

technical field [0001] The invention relates to the field of propellant management of a plate-type surface tension storage tank, in particular to a deflector functional surface imitating a Laval nozzle structure and a manufacturing method thereof. Background technique [0002] The storage tank of a spacecraft is an important device for storing and managing propellant. It is required to effectively provide propellant during the entire mission cycle. play a decisive role. The plate surface tension tank is a typical tank structure, and its key component is the Propellant Management Device (PMD). Usually, PMD is mainly composed of components such as deflectors, central support columns, and liquid accumulators. It has the advantages of simple management, high reliability, and long life, and is widely used in many foreign models. [0003] From the point of view of the propulsion principle, the plate-type surface tension tank uses the deflector as the flow path and the liquid sur...

AI Technical Summary

Problems solved by technology

The traditional surface tension plate tank does not do any treatment on the surface of the metal deflector. In the case of weightlessness in space, when the satellite is disturbed by the outside world (vibration, impact, speed fluctuation, etc.), the propellant flow process in the tank will change. It is extremely complicated, and its supply cannot be effectively guaranteed. The light ones will reduce the propulsion efficiency, and the severe ones will cause the power failure of the spacecraft and the loss of service capability. It is the lack of surface function development that restricts the development of plate surface tension.

In addition, in the existing plate-type surface tension storage tank, water is easy to accumulate at the joint between the deflector and the tank

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