SSM-N-6 Rigel

Last updated
SSM-N-6 Rigel
Type Cruise missile
Place of originUnited States
Service history
Used byUnited States Navy
Production history
Manufacturer Grumman
Specifications
Mass23,800 pounds (10,800 kg) (with boosters)
13,000 pounds (5,900 kg) (w/o boosters)
Length46 feet 1 inch (14.05 m)
Diameter3.75 feet (1.14 m)
Warhead3,000 pounds (1,400 kg) such as the W5 warhead

Engine2 × Marquardt 28 ramjet 6,000 lbf (27 kN)
4 × booster rockets 8,000 lbf (36 kN)
Wingspan13 feet 4 inches (4.06 m)
Operational
range
500 nautical miles (926 km)
SpeedMach 2
Launch
platform
submarine

The SSM-N-6 Rigel was a proposed United States Navy submarine-launched, nuclear-capable ramjet-powered cruise missile.

United States Navy Naval warfare branch of the United States Armed Forces

The United States Navy (USN) is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States. It is the largest and most capable navy in the world and it has been estimated that in terms of tonnage of its active battle fleet alone, it is larger than the next 13 navies combined, which includes 11 U.S. allies or partner nations. with the highest combined battle fleet tonnage and the world's largest aircraft carrier fleet, with eleven in service, and two new carriers under construction. With 319,421 personnel on active duty and 99,616 in the Ready Reserve, the Navy is the third largest of the service branches. It has 282 deployable combat vessels and more than 3,700 operational aircraft as of March 2018, making it the second largest and second most powerful air force in the world.

Ramjet jet engine that uses the engines forward motion to compress incoming air

A ramjet, sometimes referred to as a flying stovepipe or an athodyd, is a form of airbreathing jet engine that uses the engine's forward motion to compress incoming air without an axial compressor or a centrifugal compressor. Because ramjets cannot produce thrust at zero airspeed, they cannot move an aircraft from a standstill. A ramjet-powered vehicle, therefore, requires an assisted take-off like a rocket assist to accelerate it to a speed where it begins to produce thrust. Ramjets work most efficiently at supersonic speeds around Mach 3. This type of engine can operate up to speeds of Mach 6.

Cruise missile Aerodynamic missile

A cruise missile is a guided missile used against terrestrial targets that remains in the atmosphere and flies the major portion of its flight path at approximately constant speed. Cruise missiles are designed to deliver a large warhead over long distances with high precision. Modern cruise missiles are capable of travelling at supersonic or high subsonic speeds, are self-navigating, and are able to fly on a non-ballistic, extremely low-altitude trajectory.

Contents

Etymology

The Rigel missile was named after Rigel, the brightest star in the constellation Orion. [1]

Orion (constellation) constellation straddling the celestial equator

Orion is a prominent constellation located on the celestial equator and visible throughout the world. It is one of the most conspicuous and recognizable constellations in the night sky. It was named after Orion, a hunter in Greek mythology. Its brightest stars are Rigel and Betelgeuse, a blue-white and a red supergiant, respectively.

Development

In 1946 the US Navy sanctioned development of the Rigel missile as a sub-launched supersonic weapon to attack enemy shores, in parallel with development of the subsonic SSM-N-8 Regulus. The SSM-N-6 was to be launched by means of 4 rocket boosters and a catapult, with two ramjets for the cruise mode of the flight.

Several Rigel test articles were built to test the planned ramjet system for the Rigel missile. They had a single ramjet and a single rocket booster. Subsequently, scaled-down Flight Test Vehicles (FTVs) were built with a configuration similar to the full-scale missile, and the first FTV launch occurred in May 1950. Unfortunately, plans to build the SSM-N-6 missiles were cancelled because the failure of FTV flight tests, but also due to the fact that Rigel posed a problem for submariners by requiring a longer launch rail on submarines than the SSM-N-8 Regulus. [2]

SSM-N-8 Regulus cruise missile

The SSM-N-8A Regulus or the Regulus I was a United States Navy-developed ship-and-submarine-launched, nuclear-capable turbojet-powered second generation cruise missile, deployed from 1955 to 1964. Its development was an outgrowth of U.S. Navy tests conducted with the German V-1 missile at Naval Air Station Point Mugu in California. Its barrel-shaped fuselage resembled that of numerous fighter aircraft designs of the era, but without a cockpit. Test articles of the Regulus were equipped with landing gear and could take off and land like an airplane. When the missiles were deployed they were launched from a rail launcher, and equipped with a pair of Aerojet JATO bottles on the aft end of the fuselage.

Operators

United States Navy (planned)

See also

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References

  1. Yenne, Bill (2018). A Complete History of U.S. Cruise Missiles. Forest Lake, MN: Specialty Press. p. 61. ISBN   978-1-58007-256-4.
  2. "Grumman SSM-N-6 Rigel". www.designation-systems.net.