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dc.creatorRussell, Ronnie Daviden_US
dc.descriptionDue to the character of the original source materials and the nature of batch digitization, quality control issues may be present in this document. Please report any quality issues you encounter to, referencing the URI of the item.en_US
dc.descriptionIncludes bibliographical references (leaves 47).en_US
dc.description.abstractThe purpose of this study is to show theoretically and ics. experimentally that a porous barrel can allow pneumatic airgun projectiles to reach velocities in excess of Mach 1 of the gas behind the projectile. Thermodynamic steady flow relations indicate that pneumatic virgins using a non-porous, constant area barrel are limited to exit velocities of Mach l of the gas immediately behind the projectile, no matter how , high the reservoir gas pressure is. Various virgins, such as the Crosman 760 and DIANA RWS 34, are analyzed to examine the commercially available airgun technologies, and to determine the advantages that may be achieved using a porous barrel. A water analogy experiment shows that a porous barrel can serve as a supersonic nozzle. Busemann flow equations also account for gas velocity increasing with gas outgun from a channel if the velocity before the outgun is greater than or equal to Mach 1 .en_US
dc.publisherTexas A&M Universityen_US
dc.rightsThis thesis was part of a retrospective digitization project authorized by the Texas A&M University Libraries in 2008. Copyright remains vested with the author(s). It is the user's responsibility to secure permission from the copyright holder(s) for re-use of the work beyond the provision of Fair Use.en_US
dc.subjectmechanical engineering.en_US
dc.subjectMajor mechanical engineering.en_US
dc.titleProjectile propulsion through a porous supersonic nozzle with application to airgunsen_US
dc.typeThesisen_US engineeringen_US
dc.format.digitalOriginreformatted digitalen_US

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