HTV-X3 is the third flight of HTV-X, an uncrewed expendable cargo spacecraft to resupply International Space Station. It is planned to be launched in JFY2026.
Payload
In its unpressurised cargo section, HTV-X3 will carry Multi-layer Acoustic & Conductive-grid Sensor (MACS), a technology demonstration of millimeter-sized orbital debris detection, co-developed by NASA and JAXA.
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