Abstract
In this system, a cylindrical target space is ensonified with both the transmitting and receiving transducers being moved, or scanning, together. Cylindrical scan has two basic forms—what we have called inside-looking-out (I.L.O.) and outside-looking-in (O.L.I.). In the former, the two transducers are fixed to a short metal arm that is attached and perpendicular to a vertical screw thread. See Figure 1. The screw itself is inside a slotted hollow metal tube and the transducer supporting arm protrudes from the narrow slot. The screw and tube are caused to rotate and may have a relative rotatory motion. The transducers both rotate in a horizontal plane and move vertically and thus trace out a helical path. Hence, a cylindrical space is ensonified having the helix as center.
Interchange Executive, Westinghouse Research Laboratories.
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© 1972 Plenum Press, New York
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Geil, F.G., Mott, G. (1972). Cylindrical Scan Acoustical Holography. In: Wade, G. (eds) Acoustical Holography. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-8213-7_19
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DOI: https://doi.org/10.1007/978-1-4615-8213-7_19
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