“Other NEONSAT satellites are planned to be launched in 2026 and 2027 to build out the NEONSAT constellation. The programme is a collaboration across multiple Korean academic, industry, and research institutions including SaTReC in KAIST, which is leading the programme’s system design and engineering; the SaTReC Initiative, a Korean satellite manufacturer that has successfully developed seven previous remote sensing satellites for low Earth orbit; and the Korea Aerospace Research Institute (KARI), which is managing the mission’s ground segments and technology supervision for the NEONSAT programme. NEONSAT is funded by the Koren government’s Ministry of Science and ICT (MSIT).
“Nasa’s ACS3 is a technology demonstration of new materials and deployable structures for solar sail propulsion systems that use sunlight to propel the spacecraft.
“Much like a sailboat is powered by wind pushing against a sail, solar sails employ the pressure of sunlight for propulsion, eliminating the need for conventional rocket propellant. The mission plans to test the deployment of new composite booms that will unfurl the solar sail to measure approximately 30 feet per side, or about the size of a small apartment in total. Flight data obtained during the demonstration will be used for designing future larger-scale composite solar sail systems for space weather early warning satellites, asteroid and other small body reconnaissance missions, and missions to observe the polar regions of the sun.
“The ACS3 was designed and built at Nasa’s Langley Research Center in Hampton, Virginia, and the technology demonstration is managed and funded by the Small Spacecraft Technology programme at and with Nasa’s Ames Research Center in Silicon Valley. Nasa’s Science Mission Directorate, interested in larger solar sail missions in the future, is funding an extended operations component to execute a series of manoeuvres to raise and lower the spacecraft’s orbit, demonstrating the practicality of solar sailing.
“The capability of Electron’s Kick Stage to perform multiple engine burns in space and deploy individual satellites to unique orbits is critical to this mission.
“The Kick Stage will first ignite its Curie engine to deploy NEONSAT-1 to its target 520km circular Earth orbit. After the payload’s separation, it will ignite its Curie engine again to perform an apogee raise to 1,000km. Once in this phasing orbit, the Curie will ignite a third time to circularise before deploying the solar sail demonstration spacecraft.
“The Kick Stage will then ignite Curie a fourth and final time to perform a deorbit burn that returns the Kick Stage closer to Earth, speeding up its eventual deorbit and removal from space to support a more sustainable space environment. Rocket Lab has demonstrated similar orbit raises, inclination changes, and deorbit manoeuvres across previous Electron missions and most recently with its successful spacecraft re-entry for Varda on February 21, 2024.”
“Beginning Of The Swarm” will be Rocket Lab’s fifth mission of 2024 and the 47th Electron launch overall.
