Lambda (rocket family)
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Lambda is the name of a series of Japanese rockets. It consisted of the types Lambda 2, LS-A, LSC-3, Lambda 3, Lambda 4 and LS-C.
On February 11, 1970 the first Japanese satellite Ōsumi was launched using a Lambda 4 rocket.
The Lambda series are not guided rockets, this is because guidance techniques can often be diverted to military affairs.
The Lambda 4 was launched nine times, five of these being failures. The first launch of the Lambda 4S rocket took place on September 26, 1966 from Kagoshima. A fourth stage attitude control failed resulting in loss of the vehicle and payload. The last launch date was September 1, 1974[citation needed].