Encyclopedia Astronautica
Mu-4S


Japanese all-solid orbital launch vehicle. Five stage vehicle consisting of 8 x SB-310 + 1 x M-10 + 1 x M-20 + 1 x M-30 + 1 x M-40

LEO Payload: 180 kg (390 lb). Failures: 1. First Fail Date: 1970-09-25. Last Fail Date: 1970-09-25.

Gross mass: 43,600 kg (96,100 lb).
Payload: 180 kg (390 lb).
Height: 23.60 m (77.40 ft).
Diameter: 1.41 m (4.62 ft).
Thrust: 1,932.00 kN (434,330 lbf).
Apogee: 6,500 km (4,000 mi).
First Launch: 1970.09.25.
Last Launch: 1972.08.19.
Number: 4 .

More... - Chronology...


Associated Countries
Associated Spacecraft
  • SS Japanese earth magnetosphere satellite. 6 launches, 1970.09.25 (SS) to 1985.08.18 (SS-11 Suisei). Scientific observations in outer space. More...
  • Tansei Japanese technology satellite. 5 launches, 1971.02.16 (Tansei 1) to 1985.01.07 (SS-10 Sagikake). Series of spacecraft of varying configurations built for engineering tests of scientific satellite equipment. More...

See also
  • Mu The Japanese Mu launcher series provided a flexible all-solid propellant launch vehicle for access to space. It was the first Japanese launch vehicle designed from the start as an orbital launch vehicle. More...

Associated Manufacturers and Agencies
  • Nissan Japanese manufacturer of rocket engines and rockets. Nissan, Japan. More...

Associated Launch Sites
  • Kagoshima Japanese launch center for solid fueled sounding rockets and satellite launchers. Limited to two months a year due to disturbance of local fisheries. More...

Associated Stages
  • M-20 Solid rocket stage. 285.00 kN (64,071 lbf) thrust. Mass 9,900 kg (21,826 lb). More...
  • Mu-3C-0 Solid rocket stage. 95.00 kN (21,357 lbf) thrust. Mass 500 kg (1,102 lb). More...
  • Mu-3D-3 Solid rocket stage. 128.00 kN (28,776 lbf) thrust. Mass 2,800 kg (6,173 lb). More...
  • Mu-4S-1 Solid rocket stage. 737.00 kN (165,684 lbf) thrust. Mass 26,600 kg (58,643 lb). More...
  • Mu-4S-4 Solid rocket stage. 26.50 kN (5,957 lbf) thrust. Mass 400 kg (882 lb). More...

Mu-4S Chronology


1970 September 25 - . Launch Site: Kagoshima. Launch Complex: Kagoshima M. LV Family: Mu. Launch Vehicle: Mu-4S. LV Configuration: Mu-4S M-4S-1. FAILURE: Fourth stage failed to ignite.. Failed Stage: 4.
  • SS - . Payload: MS-F1. Nation: Japan. Agency: ISAS. Class: Earth. Type: Magnetosphere satellite. Spacecraft: SS. Decay Date: 1970-09-25 . COSPAR: F700925A. Apogee: 712 km (442 mi).

1971 February 16 - . 04:00 GMT - . Launch Site: Kagoshima. Launch Complex: Kagoshima M. LV Family: Mu. Launch Vehicle: Mu-4S. LV Configuration: Mu-4S M-4S-2.
  • Tansei 1 - . Payload: MS T1. Mass: 62 kg (136 lb). Nation: Japan. Agency: ISAS. Class: Technology. Type: Navigation technology satellite. Spacecraft: Tansei. USAF Sat Cat: 4952 . COSPAR: 1971-011A. Apogee: 1,106 km (687 mi). Perigee: 986 km (612 mi). Inclination: 29.7000 deg. Period: 106.10 min. Summary: Engineering test for the launching of scientific satellites. Injection point 29.7 N, 145.8 E .

1971 September 28 - . 04:00 GMT - . Launch Site: Kagoshima. Launch Complex: Kagoshima M. LV Family: Mu. Launch Vehicle: Mu-4S. LV Configuration: Mu-4S M-4S-3.
  • SS-01 Shinsei - . Payload: MS-F2. Mass: 65 kg (143 lb). Nation: Japan. Agency: ISAS. Class: Earth. Type: Magnetosphere satellite. Spacecraft: SS. USAF Sat Cat: 5485 . COSPAR: 1971-080A. Apogee: 1,866 km (1,159 mi). Perigee: 872 km (541 mi). Inclination: 32.0000 deg. Period: 113.10 min. Summary: Scientific observations in outer space. Injection point 29 deg 7 min N, 145 deg 8 min E. .

1972 August 19 - . 02:40 GMT - . Launch Site: Kagoshima. Launch Complex: Kagoshima M. LV Family: Mu. Launch Vehicle: Mu-4S. LV Configuration: Mu-4S M-4S-4.
  • SS-02 Denpa - . Payload: REXS. Mass: 75 kg (165 lb). Nation: Japan. Agency: ISAS. Class: Earth. Type: Magnetosphere satellite. Spacecraft: SS. Decay Date: 1980-05-19 . USAF Sat Cat: 6152 . COSPAR: 1972-064A. Apogee: 6,322 km (3,928 mi). Perigee: 238 km (147 mi). Inclination: 31.0000 deg. Period: 157.40 min. Summary: Ionospheric experiments. Scientific observations in the ionosphere and magnetosphere. Interjection point 31 deg 15' N 11 deg 05' E. .

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