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A deflector functional surface imitating laval nozzle structure and its manufacturing method

A manufacturing method and deflector technology, which are applied to special surfaces, devices for coating liquid on surfaces, coatings, etc., can solve problems such as lack of surface function development, constraints on plate surface tension, spacecraft power failure, and loss of service capability , to achieve the effects of optimizing propellant management capabilities, improving propellant utilization, and improving diversion performance

Active Publication Date: 2021-10-01
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • A deflector functional surface imitating laval nozzle structure and its manufacturing method
  • A deflector functional surface imitating laval nozzle structure and its manufacturing method
  • A deflector functional surface imitating laval nozzle structure and its manufacturing method

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Embodiment Construction

[0033] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0034] This invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, components are exaggerated for clarity.

[0035] The invention discloses a functional surface of a flow deflector imitating a Laval nozzle structure, which comprises the surface of the flow deflector and several uniformly arranged guide arrays on the surface of the flow deflector;

[0036] The surface of the deflector is a super-hydrophilic surface;

[0037] The guide array comprises a number of uniformly arranged structural units whose surface is a superhydrophobic surface;

[0038] The surface of the deflector between the ...

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Abstract

The invention discloses a functional surface of a deflector imitating a Laval nozzle structure and a manufacturing method thereof. The surface of the deflector is a super-hydrophilic surface, and a plurality of guide arrays are uniformly arranged on the surface of the deflector; the guide array includes several The surface is a structural unit of a super-hydrophobic surface, and the guide array is in the cross-sectional shape of a Laval nozzle, and gradually narrows from narrow to wide in the flow guiding direction of the deflector, and then gradually narrows from wide to wide. The invention has guiding and positioning characteristics, can strengthen the surface tension flow process, and comprehensively improves the propellant supply efficiency of the surface tension storage tank.

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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64G1/40B05D5/00B05D7/24C25D5/02
CPCB05D5/00B05D7/24B05D2518/10B64G1/40C25D5/022
Inventor 李芊芊胡艺文刘艾灵胡琳戴庆文
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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