RT Journal Article T1 The AlfaCrux CubeSat mission description and early results A1 Borges, Renato Alves A1 dos Santos, Andrea Cristina A1 Silva, William Reis A1 Aguayo, Leonardo A1 Borges, Geovany Araújo A1 Karam, Marcelo Monte A1 de Sousa, Rogério Baptista A1 Fernández-Arruti García, Bibiano A1 Botelho, Vitor Manuel de Sousa A1 Fernández Carrillo, José Manuel A1 Lago Agra, José Miguel A1 Aguado Agelet, Fernando Antonio A1 Borges, João Vítor Quintiliano Silvério A1 de Oliveira, Alexandre Crepory Abbott A1 de Mello, Bruno Tunes A1 Avelino, Yasmin da Costa Ferreira A1 Modesto, Vinícius Fraga A1 Brenag, Emanuel Couto K1 3325.06 Comunicaciones Por Satélite K1 3324.01 Satélites Artificiales K1 3325 Tecnología de las Telecomunicaciones AB On 1 April 2022, the AlfaCrux CubeSat was launched by the Falcon 9 Transporter-4 mission, the fourth SpaceX dedicated smallsat rideshare program mission, from Space Launch Complex 40 at Cape Canaveral Space Force Station in Florida into a Sun-synchronous orbit at 500 km. AlfaCrux is an amateur radio and educational mission to provide learning and scientific benefits in the context of small satellite missions. It is an opportunity for theoretical and practical learning about the technical management, systems design, communication, orbital mechanics, development, integration, and operation of small satellites. The AlfaCrux payload, a software-defined radio hardware, is responsible for two main services, which are a digital packet repeater and a store-and-forward system. In the ground segment, a cloud-computing-based command and control station has been developed, together with an open access online platform to access and visualize the main information of the AlfaCrux telemetry and user data and experiments. It also becomes an in-orbit database reference to be used for different studies concerned with, for instance, radio propagation, attitude reconstruction, data-driven calibration algorithms for satellite sensors, among others. In this context, this paper describes the AlfaCrux mission, its main subsystems, and the achievements obtained in the early orbit phase. Scientific and engineering assessments conducted with the spacecraft operations to tackle unexpected behaviors in the ground station and also to better understand the space environment are also presented and discussed. PB Applied Sciences SN 20763417 YR 2022 FD 2022-09-28 LK http://hdl.handle.net/11093/3910 UL http://hdl.handle.net/11093/3910 LA eng NO Applied Sciences, 12(19): 9764 (2022) NO Fundação de Apoio à Pesquisa del Distrito Federal (FAPDF), Brasil | Ref. N/A DS Investigo RD 12-may-2025