MGM-29 Sergeant

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MGM-29 Sergeant
Sergeant missile.jpg
Launch of a MGM-29
Type Tactical ballistic missile
Place of originUnited States
Service history
In service1962–1979
Used by United States Army
German Army
Production history
Designer Jet Propulsion Laboratory
Designed1955
Manufacturer Sperry Utah
No. built~500
Specifications
Mass10,100 lb (4,600 kg)
Length34 ft 6 in (10.52 m)
Diameter31 in (79 cm)

Warhead W52 (M65) nuclear
Blast yield200 kilotons of TNT (840 TJ)

EngineThiokol XM100
200 kN (45,000 lbf)
PropellantSolid fuel
Operational
range
75 nmi (139 km)
Boost time34 sec
Guidance
system
Inertial

The MGM-29 Sergeant was an American short-range, solid fuel, surface-to-surface missile developed by the Jet Propulsion Laboratory. The missiles were built by Sperry Utah Company. The Sergeant was the third and last in a series of JPL rockets for the US Army whose names correspond to the progression in Army enlisted ranks, starting with Private and Corporal.

Contents

Development

The Sergeant was originated during 1948 at JPL. Due to the large workload of the Corporal program rocket motor development for the Sergeant was transferred to the Redstone Division of the Thiokol Corporation. [1] Due to the failure of the Sergeant program to develop rapidly the early Sergeant was terminated in April 1951. [2] Another Army missile program, the Hermes program had developed the Hermes A2 another solid fueled missile. [3] The Hermes RV-A-10 (A2) was successful but not pursued with the motor serving as the inspiration for future solid rocket motors. [2] JPL cautioned against making Sergeant a "crash" program as with Corporal. [4]

Sergeant missile development began January 1955. [5] There were three basic steps planned: feasibility demonstration in 1955–1957, experimental development in 1958 and 1959, followed by final engineering in 1960 and 1961. [6] The rocket motor was designed by JPL and built by Thiokol. Picatinny Arsenal was to supply the warhead and adapter. [7] Ground Support equipment and vehicles were to be the responsibility of JPL. [8] By fall 1956 it was decided to defer procurement of the Corporal III to development of the much more practical Sergeant. [9] Flight tests began in early 1956 resulting in significant design changes, [10] By July 1961 the Sergeant weapon system had numerous deficiencies including check out, repair ease, standby readiness, reliability and low temperature storage limits. Sergeant was to be ready on time but fell miserably short of meeting the goal of being the weapon originally envisioned. [11] When compared to its predecessor, the Sergeant required less than

In service

Activated by the US Army in 1962 to replace the MGM-5 Corporal, it was deployed in Europe and South Korea by 1963, and to German units by 1964. [15]

The Sergeant weapon system was to be replaced by the MGM-52 Lance in the early 1970s but delays in the Lance caused it to remain in service. [16] The last US Army battalion was deactivated in 1977. [17] Sergeant Missile Systems were usually assigned to the field army with the mission of "general support to a corps" [18]

Operation of the Sergeant was recognized to be an interim stage in the development of battlefield missiles. It avoided the Corporal's liquid-fuel-handling drawbacks, but still requiring extensive setup and checkout before launch, together with a train of semi-trailer support vehicles. [19] More advanced missiles, such as the contemporary Blue Water and later Lance, would reduce setup time.

The Sergeant had a takeoff thrust of 200 kilonewtons (45,000 lbf), a takeoff weight of 4,530 kilograms (9,990 lb), a diameter of 790 millimetres (31 in), a length of 10.52 metres (34.5 ft) and a fin span of 1.80 metres (5 ft 11 in). The Sergeant missile had a minimum range of 40 kilometres (25 mi), and a maximum range of 135 kilometres (84 mi). Thiokol developed the Sergeant rocket motors, and the Castor rocket stages derived from them, at the Redstone Arsenal near Huntsville, Alabama. [20]

Derivatives

The Castor rocket stage, a Sergeant derivative, was used as the second stage of the Scout satellite launcher. Clusters of Sergeant-derived rockets (the "Baby Sergeant") were used in the second and third stages of the Jupiter-C sounding rocket, as well as in the second, third, and fourth stages of the Juno I and Juno II launch vehicles, the former of which launched the first United States satellite, Explorer 1.

Operators

Flag of Germany.svg  West Germany [21] German Army

Flag of the United States (23px).png  United States [22] United States Army

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References

  1. Cagle, Mary T., History of the Sergeant Weapon System, p 11, U.S. Army Missile Command, Redstone Arsenal, Alabama, 1972
  2. 1 2 Cagle, Mary T., History of the Sergeant Weapon System, p 15, U.S. Army Missile Command, Redstone Arsenal, Alabama, 1972
  3. Cagle, Mary T., History of the Sergeant Weapon System, p 14, U.S. Army Missile Command, Redstone Arsenal, Alabama, 1972
  4. Cagle, Mary T., History of the Sergeant Weapon System, p 32, U.S. Army Missile Command, Redstone Arsenal, Alabama, 1972
  5. Cagle, Mary T., History of the Sergeant Weapon System, p 36, U.S. Army Missile Command, Redstone Arsenal, Alabama, 1972
  6. Cagle, Mary T., History of the Sergeant Weapon System, p 97, U.S. Army Missile Command, Redstone Arsenal, Alabama, 1972
  7. Cagle, Mary T., History of the Sergeant Weapon System, p 113-117, U.S. Army Missile Command, Redstone Arsenal, Alabama, 1972
  8. Cagle, Mary T., History of the Sergeant Weapon System, p 120, U.S. Army Missile Command, Redstone Arsenal, Alabama, 1972
  9. Cagle, Mary T., History of the Sergeant Weapon System, p 130, U.S. Army Missile Command, Redstone Arsenal, Alabama, 1972
  10. Cagle, Mary T., History of the Sergeant Weapon System, p 109-111, U.S. Army Missile Command, Redstone Arsenal, Alabama, 1972
  11. Cagle, Mary T., History of the Sergeant Weapon System, p 199, U.S. Army Missile Command, Redstone Arsenal, Alabama, 1972
  12. Cagle, Mary T., History of the Sergeant Weapon System, p 202, U.S. Army Missile Command, Redstone Arsenal, Alabama, 1972
  13. Hansen, Chuck, “The Swords of Armageddon U.S. Nuclear Weapons Development since 1945,” Volume VII, p 125-126, 1995
  14. Cagle, Mary T., History of the Sergeant Weapon System, p 234, U.S. Army Missile Command, Redstone Arsenal, Alabama, 1972
  15. Cagle, Mary T., History of the Sergeant Weapon System, p 216, U.S. Army Missile Command, Redstone Arsenal, Alabama, 1972
  16. Cagle, Mary T., History of the Sergeant Weapon System, p 244, U.S. Army Missile Command, Redstone Arsenal, Alabama, 1972
  17. Kennedy, Gregory P. (28 March 2009). The Rockets and Missiles of White Sands Proving Ground 1945–1958. Schiffer Publishing. ISBN   978-0-7643-3251-7. LCCN   2008943511. OCLC   488934901. OL   23908772M. Wikidata   Q107604474.
  18. "Weapons of the Field Artillery (1965)". US Army. Archived from the original on 12 December 2021. Retrieved 11 May 2013.
  19. "Sergeant electrodynamics". Flight : 643–644. 23 April 1964.
  20. "Thiokol". Box Elder County, Utah. Archived from the original on 6 April 2009.
  21. "USAREUR Charts - SERGEANT Missile".
  22. "USAREUR Charts - SERGEANT Missile".
  23. "Foreign Relations of the United States, 1969–1976, Volume E–12, Documents on East and Southeast Asia, 1973–1976 - Office of the Historian". history.state.gov.

Further reading