隨著近年來低地球軌道（LEO）衛星發射數量急遽增加，太空碎片問題日益嚴重，對軌道環境與未來太空任務安全構成實質威脅。根據國際監測數據，目前在軌運行的衛星已超過 9000 顆，且每年發射數量仍持續攀升。為減少衛星退役後的碎片殘留風險，全球各大太空機構相繼提出更嚴格的衛星離軌要求。在「五年離軌新規」背景下，發展具備被動離軌能力的酬載模組，已成為新世代小型衛星設計中不可或缺的任務要求，也成為展現太空責任與工程實力的重要指標。
為因應此需求，本研究專注於開發一套應用於1U立方衛星的增阻離軌裝置。裝置核心為一組可展開式帆面結構，搭配四支捲收型展開管杆與小型電動驅動馬達，可於任務結束後主動展開，利用大氣阻力加速衛星軌道衰減，達成自主離軌目標。帆面材料選用未鍍鋁之Mylar薄膜，以兼顧質量輕量化與阻力效益，整體裝置封裝於1U空間內，展開後可提供約 1 平方公尺的有效拖曳面積，並預留未來可變帆面與模組化擴展能力。結構設計參考 NASA ACS3 與 LightSail-2 任務成果，並調整為適用於台灣在地製造條件與立方衛星系統需求。於系統工程層面，本裝置設計同步考量與姿態控制模組、衛星電源與結構段的整合相容性，確保部署後不影響其他子系統之運作。本研究不僅完成機構設計、材料選型與部件開發，亦建立一套可重複應用的設計流程與介面配置邏輯，為日後立方衛星任務納入增阻離軌模組提供標準化依據，具備高度應用潛力與系統拓展彈性。

The escalating number of satellites in Low Earth Orbit (LEO) is intensifying the space debris crisis, posing a significant threat to future space missions. Global space agencies are thus implementing stricter "Five-Year Deorbit Rules." To meet this critical demand, this research presents a drag-enhancement deorbiting device for 1U CubeSats.
Our device features a deployable sail structure with four rollable composite booms and a small electric motor. Designed to actively deploy post-mission, it leverages atmospheric drag to accelerate orbital decay and achieve autonomous deorbiting. The sail, made from uncoated Mylar film, ensures lightweight efficiency. The entire module fits into a 1U volume, expanding to provide approximately 1 square meter of drag area. Its design draws inspiration from NASA's ACS3 and LightSail-2 missions, adapted for local manufacturing and CubeSat system integration.
This research not only completes the mechanical design and material selection but also establishes a reusable design process and interface logic. This work offers a standardized, highly adaptable solution for integrating drag-enhancement deorbiting modules into future CubeSat missions.

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