Ultra-high-speed gram-magnitude spherical projectile transmitting device

Abstract

The invention discloses an ultra-high-speed gram-magnitude spherical projectile transmitting device comprising a two-stage light gas-gun, an extension section and a three-stage accelerating cavity, wherein one end of the extension section is fixedly connected with an outlet of the two-stage light gas-gun, the other end of the extension section is fixedly connected with the connection end of the three-stage accelerating cavity, the three-stage accelerating cavity is designed with a two-section inner diameter, an annular PC resin sleeve is arranged on an annular boss in the cavity towards the extension section, and a high explosive is embedded into the PC resin sleeve; an accelerating unit transmitted by the two-stage light gas-gun comprises a projectile holder, spherical projectiles and annular steel sheets, wherein the projectile holder is in a cylindrical structure, the top of the cylindrical structure is provided with a cylindrical projective end, the annular steel sheets are in sleeve joint with the projective end and are bonded on the front end surface of the projectile holder, and the spherical projectiles are bonded at the projective end of the projectile holder. The ultra-high-speed gram-magnitude spherical projectile transmitting device not only can accelerate gram-magnitude spherical projectiles to 10km / s, but also can ensure that the spherical projectiles are not overheated, has the last length to diameter ratio L / d near 1 and has no primary flyer fragments to follow in order to ensure the effects of space fragment protective structure optimization design and performance evaluation impact test.

Description

technical field [0001] The invention relates to an ultra-high-speed gram-level spherical projectile launching device. Background technique [0002] Space debris protection structure is an important factor to ensure the safety of spacecraft in orbit. The design of ultra-high-speed launching devices is a key ground-based test technology for the optimal design and performance evaluation of space debris protection structures. According to the 2003 National Aeronautics and Space Administration (NASA) report "TP-2003-210788" on page 4, at a height of 400km and an inclination of 51.6°, the relative impact speed of space debris on the spacecraft ranges from 1km / s to 15km / s, average 8~9km / s. This requires the spacecraft protective structure to withstand the impact of debris with a velocity of 10km / s in the order of grams. The establishment of a 10km / s launching device for gram-level spherical projectiles is a standard platform for performance experiments of protective structures....

AI Technical Summary

Problems solved by technology

However, like the ultra-high-speed launching device using the impedance gradient flyer drive technology, the accelerated flyer of this device is too thin to meet the requirements of optimal design and performance evaluation of space debris protection structures

Moreover, since the device uses high-density plasma for acceleration, there is also the problem of ablation during the acceleration process.

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