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Shahab-4 (IRIS)
Function Space launch vehicle
Manufacturer Iran

The Shahab-4 (Persian: شهاب-۴, meaning "Meteor-4") (a.k.a. IRIS) was an unbuilt Iranian space launch vehicle derived from the Shahab-3 medium-range ballistic missile.[1] The IRIS/Shahab-4 project was initiated in 1988, but it never went beyond the drawing board. The design heritage of the IRIS was later incorporated into the Safir.[2]

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