Lambda 4S
Expendable carrier rocket
title: "Lambda 4S" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["solid-fuel-rockets", "space-launch-vehicles-of-japan", "microsatellite-launch-vehicles", "nissan-vehicles"] description: "Expendable carrier rocket" topic_path: "geography/japan" source: "https://en.wikipedia.org/wiki/Lambda_4S" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0
::summary Expendable carrier rocket ::
::data[format=table title="Infobox Rocket"]
| Field | Value |
|---|---|
| function | Experimental carrier rocket |
| image | Lambda Rocket Launcher.jpg |
| caption | L-4S-5 |
| manufacturer | ISAS |
| Nissan | |
| country-origin | Japan |
| height | 16.5 m |
| diameter | 0.74 m |
| mass | 9400 kg |
| stages | 4 |
| location | LEO |
| kilos | 26 kg |
| family | Lambda |
| derivatives | Lambda 4SC |
| status | Retired |
| sites | Kagoshima Pad L |
| launches | 5 |
| success | 1 |
| fail | 4 |
| first | 26 September 1966 |
| last | 11 February 1970 |
| payloads | Ohsumi |
| :: |
|function = Experimental carrier rocket |image = Lambda Rocket Launcher.jpg |caption = L-4S-5 |manufacturer = ISAS Nissan |country-origin = Japan |height = 16.5 m |diameter = 0.74 m |mass = 9400 kg |stages = 4 |capacities = |location = LEO |kilos = 26 kg |family = Lambda |derivatives = Lambda 4SC |status = Retired |sites = Kagoshima Pad L |launches = 5 |success = 1 |fail = 4 |first = 26 September 1966 |last = 11 February 1970 |payloads = Ohsumi The Lambda 4S or L-4S was an experimental Japanese expendable carrier rocket. It was produced by Nissan and the Institute of Space and Astronautical Science and launched five times between 1966 and 1970 with Ohsumi technology demonstration satellites. The first four launches failed, however the fifth, launched on 11 February 1970, successfully placed Ohsumi-5, the first Japanese satellite, into orbit.
The Lambda 4S consisted of four stages, with two booster rockets augmenting the first stage. SB-310 rockets were used as boosters, with an L735 first stage. The second stage was a reduced length derivative of the L735, whilst an L500 was used as the third stage. The fourth stage was an L480S. All four stages burned solid propellant.
The Lambda 4S could place 26 kg of payload into low Earth orbit. It was launched from the Kagoshima Space Centre. Following its retirement in 1970, a sounding rocket derived from it, the Lambda 4SC, flew three times in order to test technologies for the Mu rockets to follow. The Mu replaced Lambda for orbital launches.
References
References
- "Lambda 4S". Astronautix.
- McDowell, Jonathan. "Lambda". Jonathan's Space Page.
- Wade, Mark. "Lambda". Encyclopedia Astronautica.
- "Comparison of Orbital Vehicles".
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