1970-083A
Kosmos-371 was a standard Tsiklon mission, transmitting signals at 149 MHz.
| Kosmos-371 | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1970 Oct 12 | 1357:00 | Launch by 11K65M | PL |
| 1359? | Stage 2 burn | ||
| 1405? | Stage 2 coast | ||
| 1452? | Stage 2 burn 2 | ||
| 1452? | Stage 2 sep | ||
| 1970 Oct 28 | 0700 | 99.92 750 x 758 x 74.0 | |
1977-012A
Tansei-3 (MS-T3) was the test payload for the Mu-3H prototype flight. Mass was 128 kg plus 56 kg kick motor. Size is 0.93m dia 0.80m high; 1.38m long with kick motor, KM-A thrust is 7.0 kN , Isp 283s. Launch was 71 deg elevation and 152 deg azimuth. The Mu-3H had a larger first stage than the earlier models.
The payload included a 0.38m dia kick motor which raised the orbit at first apogee. The kick motor was installed `upside-down' on top of the satellite at launch. Tansei 3 had a spin rate of 2.1 rev per second in parking orbit, maintaining its attitude for half a revolution. Kick motor fired half an orbit after insertion above S America increasing speed by about 750 m/s into a 136 minute orbit.
On the first rev visibile from Kagoshima, the first yo-yo system is fired to decrease spin rate from 120 to 40 rpm. A cold gas jet propulsion test was tried but a valve malfunction caused problems. Then, a second yo-yo system was used to further despin the satellite and activate the magnetic spabilization.
Stage 3+4 was 1436 kg full 351 empty, 67 kN., 53 s burn time. Without St 4, 1249f 164em. Isp 284s. Stage 4 was 187 kg full 141 kg empty including satellite, 20s burn time, 6.8 kN, KM-A is 59f 13? em., Isp 281s.
| Tansei 3 | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1977 Feb 19 | 0515:00 | Launch by Mu 3H-1 | KASC |
| T+0:08 SOB burnout | |||
| T+0:09 SOB sep | |||
| 0516? | T+1:24 St 1 burnout | -6228 x 95 x 58.3 | |
| T+1:26 B2 ig | |||
| 0517? | St 2 burnout | ||
| 0517? | Fairing top off | ||
| 0517? | Fairing lower part off | ||
| 0520? | T+6:00Spinup St 3 | -5366 x 331 x 62.5 (p344) | |
| 0521 | T+6:02 St 2 sep | -4451 x 328 x 65.5 | |
| 0521:05 | St 2 apo | ||
| 0521 | T+6:07 St 3 burn, 54s | ||
| 0522 | St 3 burnout | ||
| 0522:57 | T+7:57 St 3 sep | 95.9 329 x 793 x 65.5 | |
| T+7:57 Yo ig | |||
| 327 x 825 x 65.64 (ISASB) | |||
| 0607:58 | Activate damping? | ||
| 0609:39 | T+54:40 KM Kick motor burn, 20s | ||
| 0610:00 | KM burnout | ||
| 0611:20 | T+56:20 KM sep | 134.3 796 x 3821 x 65.8 | |
| T+56:20 Yo-yo despin | |||
| Boom deploy | |||
| T+1 week? Second yo-yo despin | |||
