Solar Transition Region UltraViolet Explorer (STRUVE) requirements flow down to design

The Solar Transition Region UltraViolet Explorer (STRUVE) is a proposed CubeSat mission with a slit-scanning, full-Stokes spectropolarimeter that will observe the Sun with a spectral range of about 259 to 281 nm. STRUVE addresses two main high-level science objectives: 1) Understand the magneto-fluid conditions at the base of the corona and the build-up and release of magnetic energy; and 2) Understand how the magnetic and plasma properties at the base of the solar corona vary between open and closed magnetic structures. This paper aims to illustrate the flow down of requirements from the mission science objectives to design requirements while also giving an overview of the design developed from the concept study. The derived requirements from the science objectives are the primary functions STRUVE will need to perform to capture the needed data for the mission. The overview of the mission design will delve into the mission operations and give an overview of the STRUVE instrument and spacecraft. Links between the requirements and mission design are made, pointing out how critical requirements are being met. Throughout the paper, trade studies are presented showing the rationale behind many of the critical design choices made in developing STRUVE for the concept study.