Encyclopedia Astronautica
S-300 ISAS


Japanese sounding rocket. The the S-300, was developed for observations in Antarctica, in parallel with the S-210.

Although the vehicle reached 160 km altitude in its first flight in the fall of 1966, two out of three succeeding flights had stability problems. These were later attributed to an unusual increase of the attack angle due to pitch-roll resonance.

Failures: 2. First Fail Date: 1969-01-09. Last Fail Date: 1969-09-08.

AKA: S-300.
Status: Retired 1969.
Gross mass: 600 kg (1,320 lb).
Height: 6.00 m (19.60 ft).
Diameter: 0.30 m (0.98 ft).
Apogee: 160 km (90 mi).
First Launch: 1966.11.04.
Last Launch: 1969.09.08.
Number: 4 .

More... - Chronology...


Associated Countries
See also
  • S Series of Japanese single-stage sounding rockets designed for low-cost observations of the ionosphere. More...

Associated Manufacturers and Agencies
  • ISAS Japanese agency overseeing development of rockets, spacecraft, and rocket engines. Institute of Space and Astronautical Science, 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

S-300 ISAS Chronology


1966 November 4 - . 02:05 GMT - . Launch Site: Kagoshima. LV Family: S. Launch Vehicle: S-300 ISAS. LV Configuration: S-300 PT-300-1.
  • Test mission - . Nation: Japan. Agency: ISAS. Apogee: 160 km (90 mi).

1969 January 9 - . Launch Site: Kagoshima. LV Family: S. Launch Vehicle: S-300 ISAS. LV Configuration: S-300-1. FAILURE: Failure.
  • Aeronomy mission - . Nation: Japan. Agency: ISAS. Apogee: 0 km ( mi).

1969 August 24 - . Launch Site: Kagoshima. LV Family: S. Launch Vehicle: S-300 ISAS. LV Configuration: S-300-2.
  • Test mission - . Nation: Japan. Agency: ISAS. Apogee: 160 km (90 mi).

1969 September 8 - . 10:20 GMT - . Launch Site: Kagoshima. LV Family: S. Launch Vehicle: S-300 ISAS. LV Configuration: S-300-3. FAILURE: Failure.
  • Aeronomy mission - . Nation: Japan. Agency: ISAS. Apogee: 10 km (6 mi).

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