Maneuverable reentry vehicle

The maneuverable reentry vehicle (abbreviated MARV or MaRV) is a type of warhead for ballistic missiles that is capable of maneuvering and changing its trajectory.

"MARV" redirects here. For the virus, see Marburg virus.
Pershing II upper stage containing MARV with terminal active radar guidance

MaRV can be capable of autonomously tracking ground targets to make sure the missile does not miss the target, because of the frequent trajectory shifts. This often requires some terminal active homing guidance (like Pershing II active radar homing).

Advanced Maneuverable Reentry Vehicle
Flight test of the Advanced Maneuverable Reentry Vehicle in early 1980. The path of the reentry vehicle is the upper streak of light, with the booster tanks immediately below. Lights from the Kwajalein Atoll in the Pacific can be seen in the lower right corner.

The Advanced Maneuverable Reentry Vehicle (AMaRV) was a prototype MARV built by McDonnell Douglas. Four AMaRVs were made and represented a significant leap in reentry vehicle sophistication. Three of the AMaRVs were launched by Minuteman-1 ICBMs on 20 December 1979, 8 October 1980 and 4 October 1981. AMaRV had an entry mass of approximately 470 kg, a nose radius of 2.34 cm, a forward frustum half-angle of 10.4°, an inter-frustum radius of 14.6 cm, aft frustum half angle of 6°, and an axial length of 2.079 meters. No accurate diagram or picture of AMaRV has ever appeared in the open literature. However, a schematic sketch of an AMaRV-like vehicle along with trajectory plots showing hairpin turns has been published.[1]

AMaRV's attitude was controlled through a split body flap (also called a "split-windward flap") along with two yaw flaps mounted on the vehicle's sides. Hydraulic actuation was used for controlling the flaps. AMaRV was guided by a fully autonomous navigation system designed for evading anti-ballistic missile (ABM) interception.

MARV-capable missiles
 China
 India
 Iran
 North Korea
  • KN-18 (tested, status unknown)[2][3]
 South Korea
 Soviet Union
 United States

See also

References
  1. Regan, Frank J. and Anadakrishnan, Satya M. (1993), Dynamics of Atmospheric Re-Entry, AIAA Education Series, American Institute of Aeronautics and Astronautics, Inc., New York, ISBN 1-56347-048-9.
  2. "KN-18 (Scud MaRV)".
  3. "KN-18 – Missile Defense Advocacy Alliance".
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