# AOBA-VELOX 3 > 41935 **Wikidata**: [Q111471301](https://www.wikidata.org/wiki/Q111471301) **Source**: https://4ort.xyz/entity/aoba-velox-3 ## Summary **AOBA-VELOX 3** is a Singaporean nanosatellite developed jointly by Nanyang Technological University (NTU) and Kyushu Institute of Technology (Kyutech). It was launched as part of a research mission to test and validate advanced satellite technologies, including a pulsed plasma thruster and a vision-based altitude determination system. AOBA-VELOX 3 represents one of Singapore’s early contributions to nanosatellite development and space technology experimentation. ## Key Facts - **Classification**: Nanosatellite (1U CubeSat form factor). - **Developers**: Nanyang Technological University (NTU), Singapore, and Kyushu Institute of Technology (Kyutech), Japan. - **Launch Date**: December 9, 2016 (deployed from the International Space Station on January 16, 2017). - **Orbit**: Low Earth Orbit (LEO), approximately 400 km altitude. - **Primary Mission**: Technology demonstration, including: - Pulsed plasma thruster (PPT) for propulsion. - Vision-based altitude determination system (using Earth’s horizon for orientation). - **Mass**: ~1.2 kg. - **Dimensions**: 10 cm × 10 cm × 10 cm (standard 1U CubeSat). - **Power Source**: Solar panels with battery storage. - **Communication**: UHF/VHF radio for telemetry and command. - **Collaborators**: - NTU’s Satellite Research Centre (SaRC). - Kyutech’s Laboratory of Lean Satellite Enterprises and In-Orbit Experiments (LaSEINE). - **Predecessor**: AOBA-VELOX 1 and 2 (earlier iterations in the series). - **Funding**: Supported by Singapore’s National Research Foundation and Japan’s space agencies. - **Operational Status**: Successfully completed its mission; contact lost after several months of operation (typical for experimental nanosatellites). ## FAQs ### What was the purpose of AOBA-VELOX 3? AOBA-VELOX 3 was designed to test two key technologies: a pulsed plasma thruster (PPT) for small satellite propulsion and a vision-based system for determining the satellite’s altitude by analyzing Earth’s horizon. These experiments aimed to advance low-cost, miniaturized satellite technologies for future missions. ### Who developed AOBA-VELOX 3? The satellite was jointly developed by Nanyang Technological University (NTU) in Singapore and Kyushu Institute of Technology (Kyutech) in Japan. NTU’s Satellite Research Centre (SaRC) and Kyutech’s Laboratory of Lean Satellite Enterprises and In-Orbit Experiments (LaSEINE) led the collaboration. ### How was AOBA-VELOX 3 launched? AOBA-VELOX 3 was launched as a secondary payload aboard the HTV-6 (H-II Transfer Vehicle) resupply mission to the International Space Station (ISS) on December 9, 2016. It was later deployed into orbit from the ISS on January 16, 2017, using the Japanese Experiment Module’s (JEM) Small Satellite Orbital Deployer (J-SSOD). ### What technologies did AOBA-VELOX 3 test? The satellite tested two primary technologies: 1. **Pulsed Plasma Thruster (PPT)**: A miniaturized propulsion system designed for nanosatellites to adjust their orbits or deorbit at the end of their missions. 2. **Vision-Based Altitude Determination System**: A camera-based system that used Earth’s horizon to calculate the satellite’s orientation, reducing reliance on traditional sensors like magnetometers or gyroscopes. ### What is the significance of AOBA-VELOX 3’s propulsion system? The pulsed plasma thruster (PPT) tested on AOBA-VELOX 3 was one of the first attempts to integrate such a propulsion system into a 1U CubeSat. PPTs are attractive for small satellites due to their simplicity, low power requirements, and lack of moving parts, making them ideal for miniaturized missions. Successful validation of this technology could enable future nanosatellites to perform orbit adjustments or controlled deorbiting. ### How long did AOBA-VELOX 3 operate? AOBA-VELOX 3 operated for several months after deployment, fulfilling its primary mission objectives. Like many experimental nanosatellites, it eventually ceased communication due to battery degradation or other technical limitations, which is common for short-duration technology demonstration missions. ### What was the role of NTU and Kyutech in this project? - **NTU (Singapore)**: Provided the satellite bus, payload integration, and ground station support. NTU’s Satellite Research Centre (SaRC) has been a key player in Singapore’s nanosatellite development, including earlier missions like X-SAT and VELOX-I. - **Kyutech (Japan)**: Contributed expertise in lean satellite technologies, including the pulsed plasma thruster and vision-based systems. Kyutech’s LaSEINE laboratory is known for its work on cost-effective, rapid-development satellite projects. ### What were the challenges faced by AOBA-VELOX 3? Key challenges included: - **Miniaturization**: Fitting the PPT and vision system into a 1U CubeSat required precise engineering to balance power, thermal management, and structural constraints. - **Communication**: Maintaining reliable UHF/VHF contact with a small satellite in LEO is difficult due to limited transmission power and ground station availability. - **Orbital Decay**: Operating in a low-altitude orbit (400 km) exposed the satellite to atmospheric drag, shortening its lifespan compared to higher-altitude missions. ### How does AOBA-VELOX 3 relate to other Singaporean satellites? AOBA-VELOX 3 was part of Singapore’s broader nanosatellite development program, which includes: - **X-SAT**: Singapore’s first locally built microsatellite (launched in 2011). - **VELOX-I**: A precursor to AOBA-VELOX 3, launched in 2014 to test vision-based payloads. - **VELOX-II**: Another 1U CubeSat launched in 2015 for inter-satellite communication experiments. AOBA-VELOX 3 built on these earlier missions by focusing on propulsion and attitude determination technologies. ### What was the outcome of AOBA-VELOX 3’s mission? AOBA-VELOX 3 successfully demonstrated its key technologies in orbit, providing valuable data for future nanosatellite missions. The PPT and vision-based system performed as expected, validating their feasibility for small satellite applications. The mission also strengthened collaboration between Singaporean and Japanese institutions in space technology research. ## Why It Matters AOBA-VELOX 3 holds significance for several reasons: 1. **Advancement of Nanosatellite Technologies**: The mission tested cutting-edge technologies (PPT and vision-based systems) in a 1U CubeSat, pushing the boundaries of what small satellites can achieve. These innovations are critical for enabling future nanosatellites to perform more complex tasks, such as formation flying, precise orbit adjustments, or deorbiting. 2. **Singapore’s Space Ambitions**: AOBA-VELOX 3 was a milestone in Singapore’s space program, demonstrating the country’s capability to develop and launch functional nanosatellites. It contributed to Singapore’s growing reputation as a hub for small satellite research and innovation, alongside missions like X-SAT and VELOX-I. 3. **International Collaboration**: The project fostered cooperation between NTU and Kyutech, combining Singapore’s expertise in satellite integration with Japan’s experience in lean satellite development. This partnership model is increasingly important as space exploration becomes more accessible to non-traditional spacefaring nations. 4. **Cost-Effective Space Research**: Nanosatellites like AOBA-VELOX 3 offer a low-cost platform for testing new technologies, reducing the financial and technical barriers to space experimentation. This democratizes access to space for universities, startups, and smaller countries. 5. **Foundation for Future Missions**: The technologies validated by AOBA-VELOX 3 (e.g., PPTs) have potential applications in larger satellites or constellations, such as enabling precise station-keeping, collision avoidance, or end-of-life deorbiting. These capabilities are essential for mitigating space debris and ensuring the sustainability of LEO. 6. **Educational Impact**: The project provided hands-on experience for students and researchers at NTU and Kyutech, training the next generation of aerospace engineers in satellite design, testing, and operations. ## Notable For - **First Singaporean nanosatellite to test a pulsed plasma thruster (PPT)**: AOBA-VELOX 3 was among the first missions to attempt integrating a PPT into a 1U CubeSat, a significant step for miniaturized propulsion systems. - **Vision-based altitude determination**: The satellite’s use of Earth’s horizon for orientation was an innovative approach to reducing reliance on traditional sensors, which are often bulky or power-intensive for small satellites. - **Bilateral academic collaboration**: The mission strengthened ties between Singapore’s NTU and Japan’s Kyutech, serving as a model for international cooperation in small satellite development. - **Contribution to Singapore’s space program**: AOBA-VELOX 3 was part of a series of nanosatellites (including VELOX-I and VELOX-II) that established NTU as a leader in Singapore’s emerging space industry. - **Technology demonstration for future missions**: The PPT and vision-based systems tested on AOBA-VELOX 3 have potential applications in larger satellites or constellations, such as enabling autonomous formation flying or debris avoidance. - **Short development cycle**: Like many nanosatellites, AOBA-VELOX 3 was developed and launched within a few years, showcasing the rapid iteration possible with small satellite projects compared to traditional large-scale missions. ## Body ### Overview and Mission Objectives AOBA-VELOX 3 was a 1U CubeSat developed as a joint project between Nanyang Technological University (NTU) in Singapore and Kyushu Institute of Technology (Kyutech) in Japan. The satellite’s primary mission was to demonstrate two key technologies: 1. **Pulsed Plasma Thruster (PPT)**: A miniaturized propulsion system designed to provide small satellites with the ability to adjust their orbits or deorbit at the end of their missions. PPTs are attractive for nanosatellites due to their simplicity, lack of moving parts, and low power requirements. 2. **Vision-Based Altitude Determination System**: A camera-based system that used images of Earth’s horizon to calculate the satellite’s orientation, reducing the need for traditional sensors like magnetometers or gyroscopes, which can be power-intensive or bulky for small satellites. The mission aimed to validate these technologies in orbit, providing data for future nanosatellite designs and enhancing the capabilities of small satellites for scientific, commercial, and educational applications. --- ### Development and Collaboration #### Institutions Involved - **Nanyang Technological University (NTU)**: - NTU’s Satellite Research Centre (SaRC) led the satellite’s development, integration, and testing. SaRC has been a key player in Singapore’s nanosatellite program, having previously developed satellites like X-SAT (Singapore’s first locally built microsatellite) and VELOX-I. - NTU provided the satellite bus, payload integration, and ground station support for AOBA-VELOX 3. - **Kyushu Institute of Technology (Kyutech)**: - Kyutech’s Laboratory of Lean Satellite Enterprises and In-Orbit Experiments (LaSEINE) contributed expertise in lean satellite technologies, including the PPT and vision-based systems. - Kyutech has a strong track record in developing cost-effective, rapid-development satellites, making it an ideal partner for NTU’s nanosatellite projects. #### Funding and Support - The project received funding from Singapore’s National Research Foundation and Japan’s space agencies, reflecting the collaborative nature of the mission and its alignment with both countries’ space research priorities. --- ### Technical Specifications #### Physical Characteristics - **Form Factor**: 1U CubeSat (10 cm × 10 cm × 10 cm). - **Mass**: Approximately 1.2 kg. - **Power Source**: Solar panels with battery storage, providing limited power for the satellite’s subsystems and payloads. - **Communication**: UHF/VHF radio for telemetry, tracking, and command (TT&C), a common choice for small satellites due to its simplicity and reliability. #### Payloads 1. **Pulsed Plasma Thruster (PPT)**: - A miniaturized propulsion system designed to generate thrust by ionizing and accelerating a small amount of propellant (typically Teflon). - The PPT was intended to demonstrate the feasibility of propulsion for 1U CubeSats, enabling orbit adjustments or controlled deorbiting. 2. **Vision-Based Altitude Determination System**: - A camera-based system that captured images of Earth’s horizon to determine the satellite’s orientation. - This system aimed to reduce reliance on traditional attitude determination sensors, which can be power-intensive or bulky for small satellites. #### Orbit and Deployment - **Launch Vehicle**: HTV-6 (H-II Transfer Vehicle), a Japanese resupply mission to the International Space Station (ISS). - **Launch Date**: December 9, 2016. - **Deployment**: AOBA-VELOX 3 was deployed from the ISS on January 16, 2017, using the Japanese Experiment Module’s (JEM) Small Satellite Orbital Deployer (J-SSOD). - **Orbit**: Low Earth Orbit (LEO) at approximately 400 km altitude, a common orbit for small satellites due to its accessibility and lower launch costs. --- ### Mission Timeline - **December 9, 2016**: Launched aboard HTV-6 to the ISS. - **January 16, 2017**: Deployed into orbit from the ISS via J-SSOD. - **2017 (First Few Months)**: Successfully operated, transmitting telemetry and payload data to ground stations in Singapore and Japan. - **2017 (Later Months)**: Contact lost due to battery degradation or other technical issues, a common outcome for short-duration nanosatellite missions. --- ### Challenges and Limitations 1. **Miniaturization Constraints**: - Fitting the PPT and vision-based system into a 1U CubeSat required precise engineering to balance power consumption, thermal management, and structural integrity. The limited volume and mass budget posed significant challenges for payload integration. 2. **Power Limitations**: - Small satellites like AOBA-VELOX 3 rely on solar panels and batteries, which provide limited power. This constrained the satellite’s operational lifespan and the complexity of its payloads. 3. **Communication**: - Maintaining reliable UHF/VHF contact with a small satellite in LEO is difficult due to limited transmission power and the need for ground station visibility. AOBA-VELOX 3’s communication system was designed for simplicity but had limited bandwidth for data transmission. 4. **Orbital Decay**: - Operating in a 400 km orbit exposed the satellite to atmospheric drag, which gradually lowered its altitude and shortened its lifespan. This is a common challenge for LEO nanosatellites, which lack propulsion for sustained orbit maintenance. 5. **Experimental Nature**: - As a technology demonstration mission, AOBA-VELOX 3 was not designed for long-term operation. Its primary goal was to validate the PPT and vision-based system, and it fulfilled this objective within its operational window. --- ### Outcomes and Impact #### Technological Validation - AOBA-VELOX 3 successfully demonstrated its two primary technologies in orbit: - The **pulsed plasma thruster (PPT)** operated as expected, providing data on its performance in a real-world environment. This validated the feasibility of using PPTs for propulsion in 1U CubeSats, a critical step for enabling future missions with orbit-adjustment capabilities. - The **vision-based altitude determination system** proved capable of calculating the satellite’s orientation using Earth’s horizon, reducing the need for traditional sensors. This technology has potential applications in reducing the cost and complexity of small satellite attitude control systems. #### Contribution to Singapore’s Space Program - AOBA-VELOX 3 was part of Singapore’s broader effort to develop indigenous satellite capabilities. Alongside missions like X-SAT (2011) and VELOX-I (2014), it demonstrated NTU’s ability to design, build, and operate small satellites, positioning Singapore as a competitive player in the global nanosatellite market. - The mission also highlighted Singapore’s focus on practical, technology-driven space research, aligning with the country’s broader goals of fostering innovation in aerospace and engineering. #### International Collaboration - The partnership between NTU and Kyutech served as a model for international cooperation in small satellite development. By combining NTU’s expertise in satellite integration with Kyutech’s experience in lean satellite technologies, the project accelerated the development of AOBA-VELOX 3 and provided valuable lessons for future collaborations. - This collaboration also strengthened ties between Singapore and Japan in space research, paving the way for future joint projects. #### Educational and Research Impact - The project provided hands-on experience for students and researchers at NTU and Kyutech, training them in satellite design, testing, and operations. This educational component is critical for building a skilled workforce in aerospace engineering. - The data collected from AOBA-VELOX 3’s mission contributed to academic research on nanosatellite technologies, including propulsion and attitude determination systems. Papers and presentations based on the mission’s findings have likely been published in aerospace journals and conferences. --- ### Related Projects and Context AOBA-VELOX 3 was part of a series of nanosatellites developed by NTU and its collaborators. Key related projects include: 1. **VELOX-I (2014)**: - A 1U CubeSat launched to test vision-based payloads and inter-satellite communication. VELOX-I was a precursor to AOBA-VELOX 3, focusing on similar technologies but with different payloads. 2. **VELOX-II (2015)**: - A 1U CubeSat designed to demonstrate inter-satellite communication using a network of small satellites. VELOX-II built on the lessons learned from VELOX-I and AOBA-VELOX 3. 3. **X-SAT (2011)**: - Singapore’s first locally built microsatellite, developed by NTU in collaboration with DSO National Laboratories. X-SAT was a larger satellite (100 kg) focused on Earth observation and imaging. 4. **AOBA-VELOX 1 and 2**: - Earlier iterations in the AOBA-VELOX series, developed in collaboration with Kyutech. These missions tested foundational technologies that were later refined in AOBA-VELOX 3. --- ### Future Implications The technologies tested on AOBA-VELOX 3 have several potential applications for future missions: 1. **Propulsion for Nanosatellites**: - The successful demonstration of the PPT could lead to its adoption in future nanosatellites, enabling them to perform orbit adjustments, collision avoidance, or controlled deorbiting. This is particularly important for mitigating space debris, a growing concern in LEO. 2. **Vision-Based Systems**: - The vision-based altitude determination system could be refined and integrated into other small satellites, reducing their reliance on traditional sensors and lowering their cost and complexity. 3. **Constellations and Swarms**: - Technologies like those tested on AOBA-VELOX 3 are critical for enabling satellite constellations or swarms, where multiple small satellites work together to achieve complex missions (e.g., Earth observation, communications, or scientific research). 4. **Commercial and Scientific Missions**: - The success of AOBA-VELOX 3’s technologies could lead to their adoption in commercial or scientific nanosatellites, such as those used for Earth imaging, climate monitoring, or space weather research. --- ### Conclusion AOBA-VELOX 3 was a landmark mission for Singapore’s nanosatellite program, demonstrating the country’s ability to develop and operate small satellites with advanced technologies. By validating a pulsed plasma thruster and a vision-based altitude determination system, the mission contributed to the global advancement of nanosatellite capabilities. Its success also strengthened international collaboration between NTU and Kyutech, serving as a model for future joint projects in space research. While AOBA-VELOX 3’s operational lifespan was short, its technological achievements have paved the way for more ambitious nanosatellite missions, both in Singapore and beyond.