Flettner rotor bomblet

The Flettner rotor bomblet was a U.S. biological sub-munition that was never mass-produced. Based on the vertical Flettner rotor which takes advantage of the Magnus effect, a force acting on a spinning body in a moving airstream, it was developed toward the end of the U.S. biological weapons program in the 1960s.

The Flettner rotor bomblet was never standardized by the U.S. military

History

The Flettner rotor biological bomblet was an experimental cluster bomb sub-munition developed by the U.S. Army during the 1960s,[1] as the U.S. biological weapons program neared its end.[2] The weapon was never standardized, that is, mass-produced.[3] William C. Patrick III said, in 1995, that the Flettner rotor was "probably one of the better devices for disseminating microorganisms."[4]

Specifications

The Flettner rotor was seven inches long and winged.[1] It could carry a liquid or dry biological agent and was designed to be used as a sub-munition in a missile warhead, cluster bomb or dispenser.[1] The fins, or wings, were designed to extend by centrifugal force, thus stabilizing the bomblet as it flew to the target area.[1] The Flettner rotor has a glide angle of 44 degrees.[2] The Flettner rotor made it possible for a single B-52 to cover an area of 20,000 square kilometers with biological agent.[2]

The Flettner rotor utilized the delayed action dissemination technique (DADT) fuse. This type of fuse has two functions. The first is that the internal fuse can initiate the gas expulsion system in the event of tampering, or certain environmental conditions.[2] This DADT fuse also self-destructs after three days if the munition fails to dispense its agent on impact as designed.[2][1] Fuses incorporating self-destruct mechanisms are considerably more expensive than traditional fuses.[2]

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See also

References
  1. Eitzen, Edward M. Medical Aspects of Chemical and Biological Warfare Archived 2012-08-26 at the Wayback Machine: Chapter 20 - Use of Biological Weapons, (PDF: p. 5), Borden Institute, Textbooks of Military Medicine, PDF via Maxwell-Gunter Air Force Base, accessed November 16, 2008.
  2. Kirby, Reid. "The CB Battlefield Legacy: Understanding the Potential Problem of Clustered CB Weapons Archived 2012-10-19 at the Wayback Machine", Army Chemical Review, pp. 25–29, July-December 2006, accessed November 16, 2008.
  3. Croddy, Eric and Wirtz, James J. Weapons of Mass Destruction: An Encyclopedia of Worldwide Policy, Technology, and History, (Google Books), ABC-CLIO, 2005, p. 304, (ISBN 1-85109-490-3), accessed November 13, 2008.
  4. U.S. Public Health Service, Office of Emergency Preparedness, "Proceedings of the Seminar Responding to the Consequences of Chemical and Biological Terrorism", Uniformed Services University of Health Sciences, Bethesda, Md; July 11–14, 1995, p. 70, via LSU Law Center's Medical and Public Health Law Site, accessed November 16, 2008.
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