Structural System
・Summary of the system The satellite we are building is a small cube with sides of about 10 cm. It is necessary to store batteries and various equipment inside it.
Additionally, strong vibrations and inertia are applied during launch, so equipment must be secured to prevent damage.
・Interface design request from JAXA When releasing a satellite from the Small Satellite Deployment Organization (J-SSOD*) located in JAXA's experimental module "Kibo" on the International Space Station (ISS), it is not possible to release a satellite unless the requirements from JAXA are met. To introduce some of them: - In the case of 1U, the dimensions of the satellite should be 100(+/-0.1)*100(+/-0.1)*113.5(+/-0.1)[mm]. ・Have rails with a width of 8.5 mm or more on all sides parallel to the Z-axis in order to slide out of the satellite mounting case. ・The mass must be 0.13 kg or more and 1.33 kg or less per 1U. ・In order to prevent the satellite from operating when it is stored in the satellite mounting case, a total of two or more deployment switches must be installed on the end faces of the two rails. Various other requirements have also been precisely determined, and these requirements must be cleared.
(reference)
JEM Payload Accommodation Handbook - Vol. 8 – 超小型衛星放出インターフェース管理仕様書
*Small Satellite Orbital Deployer (J-SSOD), The JEM Small Satellite Orbital Deployer (J-SSOD) is a mechanism for deploying CubeSats with dimensions of 10 cm per side and weighing around 50 kg from the Kibo module's airlock, launching them with the deployment mechanism and placing them into orbit. JAXA HP 小型衛星放出機構(J-SSOD)