A boron particle laser ignition combustion experimental device and experimental method

Abstract

The invention discloses a boron particle laser ignition combustion experimental device and an experimental method, and relates to the technical field of solid motor experiments. Place the experimental device and high-speed camera in the calibration position. The experimental device uses the electromagnet of the automatic drug delivery mechanism to cooperate with the drug-containing funnel. The boron particles in the drug-containing funnel are controlled by the external voltage signal to be in a discrete state and fall evenly according to the predetermined time. The boron particles in the electromagnet contraction of the drug feeding mechanism fall from the funnel and Through the laser beam, the boron particles can be ignited under the condition that the boron particles are fully in contact with the atmosphere during the movement, and the high-speed camera is turned on to start collecting images, so as to ensure the synchronization of the boron particle laser ignition and the high-speed camera image acquisition process. The structure of the experimental device is simple and reliable, and the experimental method is fast and convenient. It can realize the laser ignition and combustion of boron particles in the state of sufficient contact with the atmosphere during motion, as well as the collection and recording of image information during the entire experimental process.

Description

technical field [0001] The invention relates to the technical field of solid rocket motor experiments, in particular to a boron particle laser ignition combustion experiment device and an experiment method. Background technique [0002] At present, the ignition methods used to study the ignition and combustion performance of boron particles mainly include shock tube ignition, flat flame burner ignition, Bunsen furnace ignition, laser generator ignition, etc. Among them, laser ignition has high ignition temperature and fast heating rate. , good stability, strong anti-interference ability, and high safety are widely used. However, the boron ignition combustion experimental device using the laser ignition method generally adopts the method of statically stacking boron particles and then igniting. This ignition method will lead to The problem of uneven contact between boron particles and the surrounding atmosphere and the stacking of multiple particles. [0003] Invention paten...

AI Technical Summary

Problems solved by technology

This device can facilitate the ignition of solid propellants and measure the ignition delay period of solid propellants, but for granular substances, the flame brightness is too weak, and the ignition process cannot be reliably observed with one observation window, and because the diode probe is larger than the particle size , causing the device to fail to accurately measure the ignition delay period

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