Expandable foreign object penetration limiting device

Abstract

The invention discloses an expandable foreign object penetration limiting device, which comprises six collapsible and expandable limiting units uniformly distributed on a separating barrel of an impactor, one separating barrel and 12 tightening coil springs and 12 explosive bolts outside the barrel. Each limiting monomer comprises a limiting inner plate and a reinforcing rib on the plate, whereina long bar key is arranged on the short side surface of the reinforcing rib; the arc radian of the inner plate of the limiting plate is the same as that of the separating barrel. In the undeployed state, the limiting plate and the separating barrel are seamlessly attached and fastened with explosive bolts to a certain extent, and the end of the limiting plate and the separating barrel are hinged with coil springs. When unfolding, the explosive bolt is broken, the key is embedded in the keyway of the separation barrel, and the coil spring is still in a tensioned state, so that the self-lockingdevice is realized when unfolding. The device can withstand the impact of the impact, and can effectively achieve the separation section staying on the surface of the celestial body, playing the function of penetration limit.

Description

technical field [0001] The invention relates to a deployable extraterrestrial celestial body penetration limiting device. Background technique [0002] Deep space impact detection is an efficient means to realize the detection of the interior of extraterrestrial celestial bodies. In order to ensure that the impactor can still absorb solar energy normally after penetrating into the target body to a certain penetration depth to ensure the normal operation of the instrument and meet the requirements of antenna transmission and reception, it is necessary to restrict the corresponding compartment of the impactor so that The energy harvesting device and the transmitting and receiving antenna stay on the outer surface of the celestial body. The impact velocity of extraterrestrial celestial bodies ranges from hundreds of meters per second to several thousand meters per second, and the impact overload will reach 10 4 ~10 5 g. In order to ensure that the limit device can effectivel...

AI Technical Summary

Problems solved by technology

Therefore, it is required to design the configuration of the limit device of the impactor, and to select the material of the device reasonably to ensure that the limit device will not be damaged and lose the limit effect during impact.

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