SS-5 Skean

SS-5 Skean. The R-14 (Russian: Р-14; NATO reporting name: SS-5 Skean) was a Soviet intermediate-range ballistic missile (IRBM) developed during the height of the Cold War. Designed by the OKB-586 bureau under Mikhail Yangel, it significantly extended the range and payload capabilities of the Strategic Rocket Forces compared to its predecessor, the R-12 Dvina. The missile's deployment played a notable role in the strategic calculus of the Cuban Missile Crisis and remained a key component of Soviet nuclear deterrence for over two decades.

Development and design

The development of the R-14 was initiated in 1958 by the Yuzhnoye Design Office (then OKB-586) in Dnepropetrovsk, led by chief designer Mikhail Yangel. The project aimed to create a more powerful successor to the R-12 Dvina, with a primary requirement for a greatly extended operational range to threaten targets across Western Europe and parts of Asia. Engineers utilized a new, storable liquid propellant, likely a combination of AK-27I oxidizer and UDMH fuel, which allowed for quicker launch preparations and longer alert times compared to earlier cryogenic systems. The missile employed a single-stage design with a lightweight aluminum alloy structure and featured an advanced inertial navigation system for guidance, improving its accuracy over previous Soviet IRBMs. Key testing occurred at the Kapustin Yar range, with the first successful launch taking place in 1960, leading to its official adoption by the Soviet Armed Forces in 1961.

Operational history

Entering service with the Strategic Rocket Forces in 1961, the SS-5 Skean was initially deployed on both ground-mobile launchers and in hardened silos, with the latter becoming the predominant basing mode to enhance survivability against a potential first strike by the United States Air Force. The missile's 4,500 km range brought numerous strategic targets, including major cities like London, Paris, and Beijing, within reach, fundamentally altering the balance of power in Eurasia. Its existence was a critical factor during the Cuban Missile Crisis in 1962, as Soviet plans to deploy R-14s to Cuba—which would have placed most of the continental United States under threat—were a primary cause of the confrontation. Throughout the 1960s and 1970s, regiments equipped with the SS-5 were stationed within the Russian SFSR, as well as in the Ukrainian SSR and the Belarusian SSR. The missile began to be phased out in the late 1970s under the terms of the SALT II treaty and was completely withdrawn from service by 1984, replaced by more modern systems like the RT-2PM Topol.

Variants

The primary variant was the baseline R-14 (8K65) for the Strategic Rocket Forces. A dedicated space launch derivative, the Kosmos-3 (11K65), was developed, which utilized the R-14's first stage combined with new upper stages; this rocket was operated by the Soviet Space Forces from the Kapustin Yar and Plesetsk Cosmodrome to orbit numerous Kosmos satellites, including military reconnaissance and scientific payloads. An enhanced version, the R-14U (8K65U), was introduced with improved silo-basing capabilities and command and control systems. There were also proposed orbital weapon system concepts that studied the use of the R-14 as a basis, though these were not pursued operationally.

Operators

The sole military operator of the SS-5 Skean was the Soviet Union, specifically its Strategic Rocket Forces. Following the dissolution of the USSR in 1991, all missiles were located on the territory of the newly independent Russia and were subsequently decommissioned and dismantled. No other nation, including former Warsaw Pact allies like East Germany or Poland, was ever entrusted with operational control of this strategic nuclear weapon system. The related Kosmos-3 space launch vehicle was operated by the Soviet Space Forces and later, briefly, by the Russian Space Forces.

Specifications (technical data)

* **Type:** Single-stage, liquid-propellant Intermediate-range ballistic missile (IRBM) * **Length:** 20.75 meters (68 ft 1 in) * **Diameter:** 1.65 meters (5 ft 5 in) * **Launch Weight:** 29,100 kilograms (64,200 lb) * **Propulsion:** Storable liquid rocket engine * **Guidance:** Inertial navigation system * **Range:** 4,500 kilometers (2,800 mi) * **CEP:** Estimated 1.1–2.4 kilometers * **Warhead:** Single thermonuclear weapon with a yield of 1.0 or 2.3 Mt * **Basing:** Transportable erector-launcher or hardened silo * **Manufacturer:** Yuzhmash plant, Dnepropetrovsk

Category:Soviet missiles Category:Cold War missiles of the Soviet Union