The RX rocket family (''Roket Eksperimental'', en, Experimental Rocket) is a series of

solid-fuel rocket A solid-propellant rocket or solid rocket is a rocket with a rocket engine that uses solid propellants ( fuel/oxidizer). The earliest rockets were solid-fuel rockets powered by gunpowder; they were used in warfare by the Arabs, Chinese, Persian ...

s developed by the

Indonesia Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania between the Indian and Pacific oceans. It consists of over 17,000 islands, including Sumatra, Java, Sulawesi, and parts of Borneo and New Guine ...

National Institute of Aeronautics and Space National Institute of Aeronautics and Space ( id, Lembaga Penerbangan dan Antariksa Nasional, LAPAN) was the Indonesian government space agency. It was established on November 27, 1963, by former Indonesian president Sukarno after one year's ...

(LAPAN). They are simply named by their diameter in millimeters; for example, the RX-250 has a diameter of .

Individual boosters

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 RX-420 flew just once in 2009; it is superseded by RX-450 which was launched on 13 May 2015 , the next booster version RX-550 is under construction; the larger ones are only on the drawing board.

Multi-stage rockets

Once the solid boosters are fully qualified,

LAPAN National Institute of Aeronautics and Space ( id, Lembaga Penerbangan dan Antariksa Nasional, LAPAN) was the Indonesian government space agency. It was established on November 27, 1963, by former Indonesian president Sukarno after one year's ...

plans to assemble several of them into multi-stage rockets called ''Roket Pengorbit Satelit'' or ''RPS''. Four staging configurations have been retained so far: * RPS-01 Variant 1 (ex-

RPS-420 Satellite Orbiting Rocket Number 420 ( Indonesian: Roket Pengorbit Satelit 420, abbreviated as RPS-420), or Pengorbitan-1, was a proposed space launch vehicle under consideration in Indonesia from 2008 to 2012. Recent developments have focused ...

) :* First stage: 3 x RX-420 :* Second stage: 1 x RX-420 :* Third stage: 1 x RX-420 (shorter) :* Fourth stage: 1 x RX-320 :* Total height: * RPS-01 Variant 2b :* First stage: 1 x RX-550 + 2 x RX-420 :* Second stage: 1 x RX-550 :* Third stage: 1 x RX-320 :* Total height: * RPS-01 Variant 3a :* First stage: 1 x RX-450 :* Second stage: 1 x RX-450 :* Total height: * RPS-01 Variant 3b :* First stage: 1 x RX-450 + 2 x RX-320 :* Second stage: 1 x RX-450 :* Third stage: 1 x RX-320 :* Total height: Earlier plans for the Pengorbitan-1 and -2 orbital launch vehicles (

s) were based on the RX-420 engine which was superseded by the RX-450. , integration work is proceeding on variants 3a and 3b, whose engines have all been successfully flight-qualified. Since 2019,

's rocket division PUSTEKROKET has collaborated with AASPT and CGWIC of China in designing newer multiple stage sounding rockets. The new rockets will be called RX-452 which combined of first stage, and of second stage. The design is based on TK-32 sounding rocket as well as RX-450. It is expected the newer design to be able to reach above , simulation showed the rocket is able to reach . * RX-452 :* First stage: 1 x RX-400 :* Second stage: 1 x RX-450 :* Total height:

References

{{Expendable launch systems, state=collapsed Space launch vehicles of Indonesia