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Ohsumi
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 | Ohsumi
Credit - NASDA
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Class: Technology. Nation: Japan. Small engineering test satellites lofted by Japan's first indigenous launch vehicle. Mass: 25 kg (55 lb). Associated Launch Vehicle: Lambda 4.
Ohsumi Chronology - 1966 December 20 - Ohsumi 2 - Launch Site: Kagoshima. Launch Vehicle: Lambda 4. FAILURE: Fourth stage failed to ignite. Mass: 26 kg (57 lb). Apogee: 400 km (240 mi).
- 1966 September 26 - Ohsumi 1 - Launch Site: Kagoshima. Launch Vehicle: Lambda 4. FAILURE: Fourth stage attitude control failed. Mass: 26 kg (57 lb). Apogee: 400 km (240 mi).
- 1967 April 13 - Ohsumi 3 - Launch Site: Kagoshima. Launch Vehicle: Lambda 4. FAILURE: Fourth stage failed to ignite. Mass: 26 kg (57 lb). Apogee: 200 km (120 mi).
- 1969 September 22 - Ohsumi 4 - Launch Site: Kagoshima. Launch Vehicle: Lambda 4. FAILURE: Fourth stage control system malfunction after third stage collided with fourth stage. Mass: 25 kg (55 lb). Apogee: 400 km (240 mi).
Bibliography and Further Reading
- Bramscher, Robert G, Spaceflight, "A Survey of Launch Vehicle Failures", 1980, Volume 22, page 351.
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