Adjustable gel propellant three-time jet flow impact atomizing device

Abstract

The invention discloses an adjustable gel propellant three-time jet flow impact atomizing device. The adjustable gel propellant three-jet-flow impact atomizing device comprises a plate-shaped base, liquid jet flow impact inspirators, a second air jet flow inspirator and a third air jet flow inspirator; the plate-shaped base comprises an executing mechanism which can be used for adjusting the distance between every two liquid jet flow impact inspirators, each liquid jet flow impact inspirator comprises an executing mechanism which can be used for adjusting the jet flow angle, and the third air jet flow inspirator comprises an executing mechanism which can be used for adjusting the axial position of an air flow mixed area. The adjustable gel propellant three-time jet flow impact atomizing device is designed on the basis of simple parts, has the advantages that the height of the liquid jet flow posture is adjustable in three-dimensional space, and the liquid jet flow impact inspirators are evenly distributed on the plate-shaped base, and can meet the requirement for atomization of various adhesive gel propellants.

Description

technical field [0001] The invention belongs to the technical field of solid rocket motors, in particular to an adjustable three-jet impingement atomization device for gel propellant. Background technique [0002] Gel propellant is a static "tangible" formed by uniformly dissolving solid particles (metal or non-metal) in liquid propellant, and then through the action of gelling agent and additives, and can return to a liquid state under a certain shear stress. And it can be a mixture with similar physical properties to the original propellant. Gel propellants have the advantages of not easy to leak, low sensitivity to impact and collision, and high performance after adding metals. Researching widely. [0003] Gel propellants are non-Newtonian fluids. The main difference between their flow characteristics and Newtonian fluids in power systems is that the shear viscosity changes with the shear rate. When the shear rate reaches a certain value, the shear viscosity of the gel ...

AI Technical Summary

Problems solved by technology

Moreover, from this set of plans, we can also find the shortcomings of this set of devices: the nozzle is a fixed structure, and the attitude of the jet cannot be adjusted, which affects the atomization effect

Zhang Mengzheng and others from the Xi'an Aerospace Propulsion Research Institute published the article "Atomization and Characterization of Gel Propellant with Impact Nozzle" in "Propulsion Technology" No. 1, 2009, using three jets in the plane in a "T-shaped" The impact angle atomization scheme, similarly, this scheme is also a fixed angle in a certain plane, which cannot be flexibly adjusted according to the atomization requirements

Wang Feng and others from Northwestern Polytechnical University published the article "Improvement and Application of Experimental System for Flow and Atomization Characteristics of Gel Propellant" in "Experimental Technology and Management" No. 1, 2012. Although this device solves the problem of dynamically adjustable nozzles and can be applied to the atomization of various gel propellants, it still has shortcomings: the device is not good at breaking the liquid film quality of gel propellants. High, for the viscous gel propellant can not play an effective role in the secondary atomization; In summary, how to find the deficiencies in the existing devices, improve their deficiencies, targeted improvement and innovation, and overcome the existing The lack of technology has become one of the major difficulties in the field of rocket engines today

Images