Intermediate-range ballistic missile

IRBM and MRBM missiles.

An intermediate-range ballistic missile (IRBM) is a ballistic missile with a range of 3,000–5,500 km (1,864–3,418 miles), between a medium-range ballistic missile (MRBM) and an intercontinental ballistic missile (ICBM).^[1] Classifying ballistic missiles by range is done mostly for convenience; in principle there is very little difference between a low-performance ICBM and a high-performance IRBM, because decreasing payload mass can increase range over ICBM threshold. The range definition used here is used within the U.S. Missile Defense Agency. Some other sources include an additional category, the long-range ballistic missile (LRBM), to describe missiles with a range between IRBMs and true ICBMs. The more modern term theatre ballistic missile encompasses MRBMs and SRBMs, including any ballistic missile with a range under 3,500 km (2,175 mi).

The progenitor for the IRBM was the A4b winged rocket, based on the V-2 (officially called A4) rocket used by Nazi Germany at the end of World War II.

History

The progenitor for the IRBM was the A4b rocket winged for increased range and based on the famous V-2 (Vergeltung, or "Reprisal", officially called A4) rocket designed by Wernher von Braun; the V-2 was widely used by Nazi Germany at the end of World War II to bomb English and Belgian cities. The A4b was the prototype for the upper stage of the A9/A10 rocket. The goal of the program was to build a missile capable of bombarding New York when launched in France or Spain (see Amerika Bomber). A4b rockets were tested a few times in December 1944 and January and February 1945.^[2] All of these rockets used liquid propellant. The A4b used an inertial guidance system, while the A9 would have been controlled by a pilot. They started from a non-mobile launch pad.

Following World War II von Braun and other lead Nazi scientists were secretly transferred to the United States to work directly for the U.S. Army through Operation Paperclip developing the V-2 into the weapon for the United States.^{[citation needed]}

IRBMs are currently^[when?] operated by the People's Republic of China, India,^[3][4] Israel, and North Korea.^[5] The United States, USSR, Pakistan, United Kingdom, and France were former operators.^{[citation needed]}

Nomenclature

There is no clearly agreed-upon distinction between an intermediate-range and a medium range (MRBM) missile, and the categories overlap. Different sources will classify missiles in different ways. They are both distinct from ICBMs in that they have a range that is less than intercontinental, and hence must be based relatively close to the target. An IRBM, in general, is intended as a strategic weapon, while a MRBM, in general, is intended as a theatre ballistic missile.^{[citation needed]}

Specific IRBMs

IRBMs

Date *D	Model	Range km	Maximum km	Country
1959	PGM-17 Thor	1,900	2,400	United States,  United Kingdom
Cancelled	Blue Streak	3,700		United Kingdom
1962	R-14 Chusovaya (SS-5)	3,700		Soviet Union
1970	DF-3A	4,000	5,000	China,  Saudi Arabia
1976	RSD-10 Pioneer (SS-20)	5,500		Soviet Union
1980	S3 (missile)	3,500		France
2004	DF-25	3,200	4,000	China
2006	Agni-III	3,500	5,000	India
2007	DF-26	3,500	5,000	China
2010	Hwasong-10/RD-B Musudan	2,500	4,000 (not proven)	North Korea[6]
2011	Agni-IV	4,000		India
2010	K-4[7]	3,500		India
2017	Hwasong-12/KN-17	3,700	6,000	North Korea
2007	Shahab-5	4,000	4,300	Iran
2023	Hyunmoo-5	3,000	5,500	South Korea
2024	Long-Range Hypersonic Weapon		over 2875	United States

See also

• Intercontinental ballistic missile (ICBM)
• ICBM
• List of ICBMs
• Short-range ballistic missile (SRBM)
• Medium-range ballistic missile (MRBM)
• Submarine-launched ballistic missile (SLBM)
• Anti-ship ballistic missile (ASBM)
• Hypersonic cruise missile
• Intermediate-Range Nuclear Forces Treaty

References

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