1986-061C
The first H-1 test flight used a two-stage variant. The first stage used a Thor MB-3 engine with nine Nissan solid motors. The second stage was the LE-5 liquid engine. Attached to the LE-5 was a small rectangular box, the MABES (Magnetic Bearing Flywheel Experimental System) experiment. MABES was operated to test attitude control technology and was built by the National Aerospace Lab in Tokyo (NAL). It was named Jindai after launch, Jindai being a kind of cherry tree. Jindai measured a 2-axis magnetic bearing flywheel spinning at 1000 rpm and tested a 400 x 500 pixel CCD star sensor and a linear array sun sensor. The box contained a quartet of NiCd batteries and the spacecraft operated on and off for 3 months.
| Jindai (MABES) | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1986 Aug 12 | 2045:00 | Launch by H-1 | TNSC |
| SOB sep | |||
| 2047 | Stage 1 sep, LE-5 on at 114 km (T+2:39) | ||
| 2055 | Stage 2 cutoff (T+10:13), transfer orbit | 200? x 1487 x 50.0 | |
| 2139 | LE-5 restart, 21s (T+54:33) | ||
| 2140 | LE-5 cutoff | 1485 x 1594 x 50.0 | |
| 2142? | Ajisai sep | ||
| 2145? | Fuji sep | ||
| 1986 Nov 8 | 1230 | end of ops | |
| 1994 Aug 23 | 115.71 1478 x 1496 x 50.0 | ||
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