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Trajectory prediction tools for conceptual design of orbital and suborbital launch vehicles

机译：用于轨道和亚轨道运载火箭概念设计的轨迹预测工具

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The need for three degrees of freedom (3DOF) trajectory calculation arises due to two key requirements: First, a precise 3DOF trajectory prediction is an important subroutine of a comprehensive conceptual design tool for launch vehicles, as the main purpose of such a tool is to design a vehicle that is capable of transporting a payload to the desired orbit as realistic as possible. Secondly, it is extremely important to determine the drop zones of separated stages or fairing of the launch vehicle with high accuracy regarding safety and reuse issues. Besides, it may be crucial to determine the landing position of payload in a suborbital launch. For early phases of the conceptual design process, 3DOF trajectory prediction is recommended practice for a satisfactory design analysis. This paper aims to present two different 3DOF trajectory prediction tools, developed simultaneously for both multistage suborbital and orbital launchers, called Sonda-M and Sonda-S. Trajectory predictions are carried out for REXUS-5 sounding rocket of Eurolaunch and predicted results are compared with campaign report accessed from open literature for further evaluation of developed tools.
机译：由于两个关键要求，因此需要进行三自由度（3DOF）轨迹计算：首先，精确的3DOF轨迹预测是用于运载火箭的综合概念设计工具的重要子例程，因为该工具的主要目的是：设计一种能够将有效载荷尽可能实际地运输到所需轨道的车辆。其次，就安全性和再利用问题而言，以高精度确定分离级的降落区或运载火箭的整流罩是极为重要的。此外，确定有效载荷在次轨道发射中的着陆位置可能至关重要。对于概念设计过程的早期阶段，建议使用3DOF轨迹预测来进行满意的设计分析。本文旨在介绍两种同时针对多级亚轨道和轨道发射器开发的两种3DOF轨迹预测工具，分别称为Sonda-M和Sonda-S。对Eurolaunch的REXUS-5探空火箭进行了轨迹预测，并将预测结果与公开文献中提供的战役报告进行了比较，以进一步评估已开发的工具。

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