NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Dual-temperature acoustic levitation and sample transport apparatusThe properties of a dual-temperature resonant chamber to be used for acoustical levitation and positioning have been theoretically and experimentally studied. The predictions of a first-order dissipationless treatment of the generalized wave equation for an inhomogeneous medium are in close agreement with experimental results for the temperature dependence of the resonant mode spectrum and the acoustic pressure distribution, although the measured magnitude of the pressure variations does not correlate well with the calculated one. Ground-based levitation of low-density samples has been demonstrated at 800 C, where steady-state forces up to 700 dyn were generated.
Document ID
19860043184
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Trinh, E. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Robey, J. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Jacobi, N. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Wang, T. (California Institute of Technology Jet Propulsion Laboratory, Pasadena, United States)
Date Acquired
August 12, 2013
Publication Date
March 1, 1986
Publication Information
Publication: Acoustical Society of America, Journal
Volume: 79
ISSN: 0001-4966
Subject Category
ACOUSTICS
Distribution Limits
Public
Copyright
Other