Session
Pre-Conference Poster Session II
Location
Utah State University, Logan, UT
Abstract
With the rise of satellite constellations imminent, the University of Toronto Space Flight Laboratory has prioritized creating repeatable, modular spacecraft bus designs that can be produced with lower effort, cost, and time. Streamlining for larger production quantities inspired the development of a new SFL bus. DEFIANT aims to satisfy the need for a spacecraft bus capable of supporting a wide variety of payloads all using almost identical structure, power architecture, computing systems and wiring harness. The wiring harness connects all electrical components within the structure and can pose significant challenges during assembly and integration if not considered during initial design. This paper explores the development of the DEFIANT bus wiring harness that achieves the goal of modularity through iteration and consistent consideration of assembly, and highlights the multidisciplinary nature of the harness as it impacts all major subsystems. Using the principles of point-to-point harnessing coupled with an increased number of connectors and carefully selected connector location, the harness has been designed from the start to support constellation missions. Iterating through various degrees of fidelity in wiring routing provided practice for the engineering team to offer near constant feedback. With this work, the DEFIANT bus harness design is robust for various constellation missions SFL will launch and identifies a methodology for developing future modular harnesses for other spacecraft.`
Paper for Methodologies for Development of a Modular Wiring Harness for Use in Small Satellite Constellations
Methodologies for Development of a Modular Wiring Harness for Use in Small Satellite Constellations
Utah State University, Logan, UT
With the rise of satellite constellations imminent, the University of Toronto Space Flight Laboratory has prioritized creating repeatable, modular spacecraft bus designs that can be produced with lower effort, cost, and time. Streamlining for larger production quantities inspired the development of a new SFL bus. DEFIANT aims to satisfy the need for a spacecraft bus capable of supporting a wide variety of payloads all using almost identical structure, power architecture, computing systems and wiring harness. The wiring harness connects all electrical components within the structure and can pose significant challenges during assembly and integration if not considered during initial design. This paper explores the development of the DEFIANT bus wiring harness that achieves the goal of modularity through iteration and consistent consideration of assembly, and highlights the multidisciplinary nature of the harness as it impacts all major subsystems. Using the principles of point-to-point harnessing coupled with an increased number of connectors and carefully selected connector location, the harness has been designed from the start to support constellation missions. Iterating through various degrees of fidelity in wiring routing provided practice for the engineering team to offer near constant feedback. With this work, the DEFIANT bus harness design is robust for various constellation missions SFL will launch and identifies a methodology for developing future modular harnesses for other spacecraft.`
