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NanoDragon is a CubeSat built by the Vietnam National Satellite Center (VNSC). NanoDragon will use its automatic identification system (AIS) receiver to prevent and will also test the accuracy of its attitude control using It carries an advanced OBC (on board computer) developed by Japan's Meisei Electric.

NanoDragon will be launched by Epsilon rocket on 8 October 2021.

Specifications

 * Size: 10 cm x 10 cm x 34 cm (3U CubeSat)
 * Mass: 4 kg
 * Payload: AIS receiver and optical camera

Boomerang satellite
One potential application of the aerodynamic umbrella demonstrated by Orizuru was the boomerang satellite (ブーメラン衛星), a companion satellite for the Japanese Experiment Module studied by NAL from the late 1980s. Large structures such as the International Space Station have residual and perturbative vibrations, or gravity jitter (g-jitter) generated from life support systems and crew activity. These g-jitters may compromise experiments requiring a environment with a high level of microgravity, such as studies on semiconductor crystal growth. The boomerang satellite was a spacecraft with a simple structure for conducting delicate experiments requiring a microgravity environment better than those available on a manned spacecraft. It was envisioned as a small microgravity laboratory complementing the space station. Experiments that are unacceptable from a safety standpoint, such as those producing hazardous gases may have also been preformed by the boomerang satellite. After completion of the experiments, the boomerang satellite would deploy an aerodynamic brake system based on Orizuru's umbrella. At the altitude of the space station, the low-density atmosphere present can be utilized to produce aerodynamic force. By calculating the effects of passive drag, and using the aerodynamic umbrella to control its trajectory, it can return to the space station. The spacecraft owed its name to its ability to fly back near its ejected point, just like a boomerang. It will come to within a few meters from the space station and with a relative velocity of 5 - 10 cm, at which point it will dock to the station following capture by manipulators. At the station, a payload canister containing fragile cargo will be retrieved, and replaced with a new canister. The spacecraft will then depart for another flight, and after completing its mission it will again fly a passive trajectory back to the station. As the spacecraft employs an aerodynamic brake for maneuvering, it can be reused multiple times without any need to refuel at the station.

Concepts for a larger, man-tended free flyer existed, however the spacecraft's own structure, such as solar cells would still create g-jitters. In order to conduct microgravity experiments on such satellites, the use of magnetically suspended multiple degree-of-freedom (DoF)-type micro gravity isolators was proposed to isolate the experiments from vibrations. NAL also conducted studies of an alternative to the boomerang satellite, called the tether satellite. It was to be connected to the Japanese Experiment Module with a tether, and operate 100 to 250 meters away from the space station. The tether was to be used to attenuate the g-jitter from the station, as well as for spacecraft retrieval by reeling it from the station. When compared to the Tether satellite, the Boomerang satellite had the advantage of completely cutting off the shocks and vibrations from the station.

Overview
EQUULEUS cubesat jointly developed by JAXA and the University of Tokyo will be launched as a secondary payload on SLS EM-1. NASA called on international partners to propose ISSL developed the PROCYON deep space probe, which was launched as a piggyback payload to JAXA's Hayabusa 2 asteroid sample return spacecraft. On 27 May 2016 NASA announced that EQUULEUS, along with JAXA's OMOTENASHI lunar lander was selected to fly on EM-1. A JAXA official described the two missions as a wonderful opportunity to go near the moon together with Orion. The EQUULEUS project consists from a consortium of research institutes, including JAXA, Nihon University, and the University of Electro-Communications. Development started in the summer of 2016, and the flight model is to be completed by early 2018. The EQUULEUS project is lead by Ryu Funase from the University of Tokyo.

Scientific objective
Along with its technology demonstration mission EQUULEUS has a scientific observation mission, such as understanding the radiation environment near Earth and to get a hold of how minor objects in the cis-lunar environment are distributed. The PHOENIX instrument is a an extreme ultraviolet telescope for picturing Earth's plasmasphere. The telescope's mirror is optimized to reflect the emission line of helium ions. Taking advantage of its distance from Earth, it can image the entire plasmasphere. PHOENIX will be the first attempt ever made to observe EUV rays emitted from plasma in outer space with a subminiaturized telescope. PHOENIX's capabilities can complement JAXA's Arase satellite launched in December 2016. With plasma visualization and studying the dynamics of fluctuations in the plasmasphere, it may lead to insights in future planetary exploration technologies. DELPHINUS, or DLP, for short is an optical camera for observing lunar impact flash events. The instrument also has a capability to observe near-Earth objects and potential 'mini-moons'. Theoretically, NEOs approaching Earth can be briefly caught within Earth's gravity well, and although the object from an observer on Earth, it will move as if it is an moon. One example of such an object is 2006 RH120, which orbited Earth between 2006 and 2007. If a mini-moon or NEO that can be rendezvoused by EQUULEUS is identified, the CubeSat will attempt a flyby. The spacecraft is equipped with a membrane-type sensor, CLOTH to monitor the size and distribution of dust particles in the cis-Lunar region. The sensor is innovative in that it uses the spacecraft's multi-layer insulation (MLI) as a detecter, thus realizing a dust counter suitable for mass-constrained CubeSats. It will be the first instrument to measure the dust environment of the Earth–Moon L2 Lagrangian point, and aims to uncover the dust's origin, as well as conducting risk assessment of the point dust particles in anticipation of a future manned mission. CLOTH will decipher point dust (likely originating from mini-moons) from sporadic dust by differences in their impact velocity.

Instruments

 * Plasmaspheric Helium ion Observation by Enhanced New Imager in eXtreme ultraviolet (PHOENIX)
 * DEtection camera for Lunar impact PHenomena IN 6U Spacecraft (DELPHINUS)
 * Cis-Lunar Object detector in THermal insulation (CLOTH)

Propulsion
EQUULEUS will be equipped with a set of water resistojet thrusters named AQUARIUS (AQUA Resistojet propUlsion System). AQUARIUS functions by heating water into vapor and exhausting it as propulsion. The benefits of using water as a fuel source is its nontoxicity and ease at handling. Heat generated from the onboard communication device will be reused to evaporate the water. The two primary Delta-v thrusters and four reaction control system thrusters will be fed from the same propellant tank.