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首页> 外文期刊>Acta astronautica >CubeSat Particle Aggregation Collision Experiment (Q-PACE): Design of a 3U CubeSat mission to investigate planetesimal formation
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CubeSat Particle Aggregation Collision Experiment (Q-PACE): Design of a 3U CubeSat mission to investigate planetesimal formation

机译：CubeSat粒子聚集碰撞实验（Q-Pace）：3U CubeSat任务的设计调查行星形成

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摘要

Observations of the collisional evolution of particle ensembles in a microgravity environment are necessary to characterize the processes that lead to the formation of planetesimals, km-size and larger bodies, within the protoplanetary disk. The two current theories of planetesimal formation, namely growth through binary sticking collisions and gravitational instability within the protoplanetary disk, have difficulties in explaining how particles grow beyond a centimeter in size. In this paper we describe the CubeSat Particle Aggregation and Collision Experiment (Q-PACE), a Low Earth Orbit 3U CubeSat mission that will provide a high-quality, long duration microgravity environment in which we will observe collisions between particles under conditions relevant to planetesimal formation. We have designed a series of experiments involving a broad range of particle size, density, surface properties, and collision velocities to observe collisional outcomes from bouncing to sticking as well as aggregate disruption in tens of thousands of collisions.
机译：在微沉降环境中的粒子集合的碰撞演化的观察是表征导致平坦化的过程中形成的过程，在原始盘中形成平坦的磁盘。通过平坦地层形成的两个当前理论，即通过二进制粘性碰撞和原始盘内的重力不稳定性的生长，在说明颗粒的尺寸范围内的颗粒的困难是困难。在本文中，我们描述了立方体粒子聚集和碰撞实验（Q-Pace），一个低地球轨道3U立方体任务，将提供高质量，长长的持续时间的微生物，其中我们将在与行星相关的条件下观察粒子之间的碰撞形成。我们设计了一系列涉及广泛的粒度，密度，表面性质和碰撞速度的实验，以观察从弹跳到伸出的碰撞结果以及成千上万的碰撞中的总体中断。

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