TOP > Our Enterprises > Missions > Test Satellite TANSEI-2 (MS-T2)
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Mission Profile
| Name (pre-launch in parentheses) | TANSEI-2 (MS-T2) | |
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| International Designation Code | 1974-08A | |
| Objectives | Performance test of M-3C rocket, verification of radio-guidance system, and pre-test of the satellite attitude-control system using geomagnetic field that would be required for scientific satellite to be launched. | |
| Launch | Date | 14:00, February 16, 1974 (JST) |
| Location | Kagoshima Space Center (Uchinoura) | |
| Launch Vehicle | ||
| Configuration | Weight | 56 kg |
| Shape | Octagonal cylinder, 75cm long from face to face and 45cm high [Click image for enlargement] |
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| Orbit | Altitude | Perigee 290 km, Apogee 3,240 km |
| Inclination | 31° | |
| Type of Orbit | Elliptical | |
| Period | 122 min | |
| Scientific Instruments |
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| End of Operation | January 23, 1983 | |
| Operation | On reception of the first revolution signal (16:8:6 to 16:18:44) at Uchinoura after orbital insertion, the yo-yo despinner was activated by ground command to slow satellite spin from 2.3rps to 11.3rpm. Then various experiments were conducted including: wheel-mode experiment to change the satellite’s spin axis, which was originally on the orbital plane after launch, to be normal to the orbital plane; an experiment to keep the wheel mode in line with rotation of the orbital plane by using the keeping magnet; and an experiment to change the spin axis to be parallel to the axis of the earth. | |