JEM Small Satellite Orbital Deployer (J-SSOD) is a mechanism for deploying small satellites designed in accordance with CubeSat design specification (10cm×10cm×10cm) that transfers the satellites from the Japanese Experiment Module Kibo's airlock to space environment and releases them on orbit. J-SSOD is composed of the Satellite Install Cases, Separation Mechanism and Electrical Box. J-SSOD is used by attaching it with Multi-Purpose Experiment Platform (MPEP).
|Installable satellite size||CubeSat size 1U, 2U, or 3U*|
|Insertion orbit||Elliptical orbit with altitude of 380 km - 420 km (depends on ISS altitude)
|Ballistic coefficient||120kg/m2 or less (to make satellites decayed faster than ISS orbit)|
|Insertion direction||Nadir-aft 45° from the ISS nadir side, in terms of ISS body coordinate system
(to avoid collision with the ISS)
|Insertion velocity||1.1 - 1.7 m/sec|
|Life expectancy on orbit||100-250 days (depends on ballistic coefficient, released altitude, solar activity, etc.)|
CubeSats are released from Kibo, taking advantage of its unique function having both airlock and robotic arm among modules on the ISS.
Compared with satellites launched by rockets, J-SSOD mission has the following advantages.
In order to validate technology and establish operation procedure, technology validation mission was performed from October 4-5, 2012. During two-time deployment, 5 CubeSats were deployed.
1st deployment: WE WISH and RAIKO were deployed at 11:37 pm, Oct. 4th from Satellite Install Case No.1.
2nd deployment: FITSAT-1, F-1, and TechEdSat were deployed at 0:44 pm, Oct. 5th from Satellite Install Case No.2.
The first deployment was operated by astronaut Hoshide on orbit. The second deployment was operated by Kibo's Mission Control Room on ground.
Following the success of the technology validation mission, JAXA now accepts CubeSats to be deployed from Kibo.
|Investigator(S)||Tohoku University/Wakayama University||Fukuoka Institute of Technology||Meisei Electric Co., Ltd.|
- Image the Earth using a fish-eye lens camera
- Photographically measure satellite movement relative to JEM using a Panoramic Color Camera (PCC)
- Star sensor testing
- A de-orbit experiment testing a deployable membrane mechanism
- Testing a small mobile ground station for receiving signals via international cooperation
- An orbit determination experiment using Ku-band radio frequency Doppler measurements
- A high-speed Ku-band data communication experiment
- Technical demonstration of a high-speed small satellite transmitter module
- Conducting an "artificial star" optical communications test utilizing high output visible light LEDs
- To promote local technology education and the utilization of small satellite data
- To test an ultra-small thermal infrared camera for ground temperature observations
/FPT Univ/UPPSALA Univ
|NASA Ames Research Center (ARC)
/San Jose State Univ
- Testing a series of amateur radio transceivers employing a CubeSat magnetometer
- Testing C328 low resolution camera
- Testing temperature sensor
- Demonstrate Swedish designed Space Plug-and-Play Avionics (SPA) hardware and software
- Inter-satellite communication using Iridium or OrbComm satellite network
|Investigator(s)||The University of Tokyo/Vietnam National Satellite Center/IHI Aerospace||Nanorack/NanoSatisfi||NASA Ames Research Center (ARC)|
|Mission||Earth imaging||- Technology validation of an open platform that has re-programming function. (Activation of applications uplinked by general people)||- Technology validation of the aero braking mechanism called Exo-brake on its deorbiting.|
For further deployment events, please see our News.
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