Raavana 1

Raavana-1: Sri Lanka’s First Satellite

Raavana-1 marked a significant milestone in the realm of space exploration for Sri Lanka, symbolizing the nation’s aspirations to engage in modern technological advancements. Launched on April 17, 2019, as part of the Cygnus NG-11 mission to the International Space Station (ISS), Raavana-1 was deployed into orbit on June 17, 2019. This CubeSat-sized satellite not only demonstrated Sri Lanka’s capabilities in satellite technology but also served various scientific purposes during its operational lifespan.

Development of Raavana-1

The development of Raavana-1 was spearheaded by two scholars, Tharindu Dayarathna and Dulani Chamika Vithanage, who were affiliated with the University of Peradeniya’s Engineering Faculty and the Asian Institute of Technology. The design phase took place in Japan, contributing to a collaborative international effort. The satellite was compact, weighing approximately 1.1 kilograms and having a volume close to 1000 cubic centimeters. It was engineered to operate effectively for about one and a half years.

One of the primary functions of Raavana-1 was to capture images of Sri Lanka and its neighboring regions. It utilized magnetic torquers to manage its angular velocity, ensuring stability while in orbit. This technology allowed the satellite to perform its tasks efficiently and gather valuable data from space.

The Significance of Its Name

The name “Raavana” was chosen for the satellite as a tribute to Sri Lankan culture and mythology. Sanath Panaavanna, the Director General and Engineer at the Center for New Technology – Arthur C. Clarke Institute of Sri Lanka, along with his engineering students sought a name that resonated with Sri Lankan heritage. Initially considering “Dadu Monara,” a reference to an ancient flying device from local folklore, they opted for “Raavana” due to its cultural significance and global recognizability.

King Raavana is a prominent figure in Sri Lankan mythology, credited with ruling the island during historical times when innovations like the Dadu Monara were said to have been created. By naming the satellite after this legendary king, it reflects both pride in national identity and an embrace of technological progress.

Launch Details

On February 18, 2019, Raavana-1 was formally handed over to the Japan Aerospace Exploration Agency (JAXA) for integration into the Cygnus NG-11 mission. The satellite embarked on its journey toward the ISS on April 17 at 2:16 a.m. Sri Lanka Standard Time. Alongside Raavana-1, Nepal’s first satellite, NepaliSat-1, was launched as part of this mission.

Once deployed into orbit at an altitude of approximately 400 kilometers, Raavana-1 became part of a third batch of satellites known as BIRDS-3, which included contributions from Japan and Nepal as well. The primary goal for Raavana-1 was to conduct fifteen imaging sessions each day, contributing to environmental monitoring and public awareness initiatives regarding space technology.

Missions Undertaken by Raavana-1

Raavana-1 had several significant missions outlined during its operational period as detailed in Nanosats’ database. These missions included:

  • Providing Ciphered Messages: The satellite was designed to transmit encrypted messages within its beacon using the 437 MHz frequency band.
  • Remote Data Collection: By employing low-powered LoRa modulation technology, it aimed to demonstrate efficient remote data collection and onboard processing capabilities.
  • Imaging Mission: One of its key objectives was to capture images for public outreach, thereby increasing awareness about space technology in Sri Lanka.
  • Earth Magnetic Field Measurement: This task involved collecting data related to Earth’s magnetic field, contributing valuable information for scientific research.
  • Glue Mission: Raavana-1 sought alternatives to expensive space glue by exploring commercially available off-the-shelf (COTS) options.
  • Active Attitude Stabilization: This mission aimed at developing precursor technologies for active pointing control in future CubeSat designs.

Specifications and Technical Details

The specifications of Raavana-1 reflect its design as a CubeSat categorized as a 1U unit. Developed under the auspices of the Kyushu Institute of Technology in Japan, it serves as a testament to international collaboration in advancing space science and technology. Key technical details include:

  • Country: Sri Lanka
  • Type: CubeSat (1U)
  • Organization: Kyushu Institute of Technology
  • Description: Remote Data Collection based on low powered LoRa modulation for demonstration purposes.

The Future of Space Exploration in Sri Lanka

The successful launch and operation of Raavana-1 have paved the way for further developments in space exploration for Sri Lanka. It has inspired new generations of engineers and scientists within the country to venture into aerospace technologies and foster innovation through educational programs and research initiatives.

Sri Lanka’s burgeoning interest in space technology is not only evident in this project’s execution but also reflects broader global trends where countries are increasingly investing in satellite technology for various applications such as communication, weather forecasting, disaster management, and environmental monitoring.

Conclusion

Raavana-1 stands as a landmark achievement for Sri Lanka, representing both the nation’s rich cultural heritage and its potential within modern scientific arenas. As the first artificial satellite developed by Sri Lanka, it signifies a step toward greater participation in global space research efforts while fostering local expertise in engineering and technology fields. The legacy of Raavana-1 will likely inspire future projects aimed at expanding Sri Lanka’s role in space exploration and technology innovation.

Artykuł sporządzony na podstawie: Wikipedia (EN).