Abstract
A method and device for boring a hole [5] through a material along a desired path includes an umbilical subsystem [2000] connected to a boring subsystem [3000] having a plurality of pulsejets [3100]. These pulsejets [3100] repeatedly receive and ignite a combustible fluid [7] in a combustion chamber [3230] causing a portion of the fluid [7] to be forced out of a nozzle [3260] at high speeds as a fluid slug [10] that impacts materials ahead of the pulsejet [3100]. A controller [3310] controls the amount of fluid provided to each pulsejet [3100], and the firing timing, thereby controlling the intensity in which each slug [10] impacts the material. By modulating the intensity and firing sequence of each of the pulsejets [3100], material ahead of the boring subsystem [3000] is differentially bored thereby allowing steering of the boring subsystem [3000].
Recommended Citation
W. A. Berger et al., "Multiple Pulsejet Boring Device," U.S. Patents, Jan 2009.
Department(s)
Mining Engineering
Patent Application Number
US11/886,374
Patent Number
US7584807B2
Document Type
Patent
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2009 The University of Scranton, All rights reserved.
Publication Date
01 Jan 2009
