论文标题
Lyra Project：一个没有太阳能动作的1i/'Oumuamua的任务
Project Lyra: A Mission to 1I/'Oumuamua without Solar Oberth Manoeuvre
论文作者
论文摘要
为了解决星际对象1i/'oumuamua的性质问题，需要通过航天器观察到原位观察，因为该对象已经超出了现有望远镜的范围。大多数使用近期技术达到1I/'OUMUAMUA的建议是基于太阳能操作（SOM），因为没有SOM的轨迹通常在较低的任务持续时间和较高的总速度要求方面显着较低。尽管SOM允许巨大的速度提高，但它在技术上也充满挑战，从而增加了程序化和与任务相关的风险。在本文中，我们根据2028年的发布，确定了通往星际对象1i/'oumuamua的替代路线，该途径不需要SOM，但具有与SOM任务相似的性能。相反，它雇用了木星奥伯斯（Oberth）机动（JOM），总共飞行约26年左右。该轨迹的功效是由于它通过利用Veega序列而将$δ$ V显着将$δ$ V的结果大大降低。该轨迹的总$δ$ V为15.8 $ kms^{ - 1} $，相应的有效载荷质量为SLS 1B或241千克的相应有效负载质量为241千克。 $ kms^{ - 1} $。
To settle the question of the nature of the interstellar object 1I/'Oumuamua requires in-situ observations via a spacecraft, as the object is already out of range of existing telescopes. Most previous proposals for reaching 1I/'Oumuamua using near-term technologies are based on the Solar Oberth Manoeuvre (SOM), as trajectories without the SOM are generally significantly inferior in terms of lower mission duration and higher total velocity requirement. While the SOM allows huge velocity gains, it is also technically challenging and thereby increases programmatic and mission-related risks. In this paper, we identify an alternative route to the interstellar object 1I/'Oumuamua, based on a launch in 2028, which does not require a SOM but has a similar performance as missions with a SOM. It instead employs a Jupiter Oberth Manoeuvre (JOM) with a total time of flight of around 26 years or so. The efficacy of this trajectory is a result of it significantly reducing the $Δ$V to Jupiter by exploiting the VEEGA sequence. The total $Δ$V of the trajectory is 15.8 $kms^{-1}$ and the corresponding payload mass is 115 kg for a SLS Block 1B or 241 kg for a Block 2. A further advantage of the JOM is that the arrival speed relative to 1I/'Oumuamua is approximately 18 $kms^{-1}$, much lower than the equivalent for the SOM of around 30 $kms^{-1}$.
