RX rocket family

The RX rocket family (Roket Eksperimental) is a series of solid-fuel rockets developed by the Indonesian National Institute of Aeronautics and Space. They are simply named by their diameter in millimeters; for example, the RX-250 has a diameter of 250 mm.

This family is composed of:

RX-250 was launched eight times from 1987 to 2007. RX-320 was launched twice in 2008 and once again in 2014. RX-420 flew just once in 2009; it is superseded by RX-450 which was launched on 13 May 2015 As of May 2016^[update], the next booster version RX-550 is under construction; the larger ones are only on the drawing board.

Once the solid boosters are fully qualified, LAPAN plans to assemble several of them into multi-stage rockets called Roket Pengorbit Satelit or RPS. Four staging configurations have been retained so far:

Earlier plans for the Pengorbitan-1 and -2 orbital launch vehicles (RPS-420s) were based on the RX-420 engine which was superseded by the RX-450. As of May 2016^[update], integration work is proceeding on variants 3a and 3b, whose engines have all been successfully flight-qualified.

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