World Library  
Flag as Inappropriate
Email this Article

Advanced Inertial Reference Sphere

Article Id: WHEBN0010298371
Reproduction Date:

Title: Advanced Inertial Reference Sphere  
Author: World Heritage Encyclopedia
Language: English
Subject: Missile guidance, Military technology, Rockwell International, Inertial navigation system
Collection:
Publisher: World Heritage Encyclopedia
Publication
Date:
 

Advanced Inertial Reference Sphere

The Advanced Inertial Reference Sphere (AIRS) is a highly accurate inertial guidance system designed for use in the LGM-118A Peacekeeper ICBM which was intended for precision nuclear strike against Soviet missile silos.

Details

AIRS is a Fluid-suspended gyrostabilized platform system, as opposed to one using Gimballed gyrostabilized platform. It consists of a beryllium sphere floating in fluid. Jet nozzles are used to stabilize the inertial platform as commanded from the sensors. This design not only eliminates the problem of gimbal lock, but also makes it extremely accurate (drift less than 1.5×10−5 °/h), accurate enough so any further improvement would give a negligible benefit to the missile's CEP.

The sensors used in AIRS are floated gas bearing gyroscopes and SFIR accelerometers which are derivatives of PIGA accelerometers. Although this type of accelerometer is most accurate it contains many precise parts which makes them very expensive to build (approximately $300,000 per unit). PIGA/SFIR accelerometers are also very susceptible to failure because of complicated design.

Usage

The AIRS was originally developed for the LGM-118A Peacekeeper. The first AIRS units were manufactured by Northrop.

External links

  • Detailed description
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 



Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.