Power plants – Reaction motor – Method of operation
Patent
1996-12-20
1998-07-07
Thorpe, Timothy
Power plants
Reaction motor
Method of operation
60262, 181213, F02K 138
Patent
active
057750955
ABSTRACT:
A method for suppressing noise in a turbofan engine includes segmenting coaxial inner and outer flow streams into circumferentially interleaved inner and outer segments beginning at a common location along the engine axis, diverting additional portions of the outer stream radially inwardly from an axial location downstream of the common location and combining the inner segments, the outer segments and the additional portions into a common stream so that the additional portions are introduced into discrete radial locations in the common stream. The diverted additional portions of the outer stream eliminate localized regions of hot, high velocity gases in the combined stream to achieve improved noise suppression.
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Greatrex, F.B. "Reduction of Jet Noise", Flight, V. 68, No. 2424, pp. 57-60, date: Jul./1955.
Barber Thomas J.
Lord Wesley K.
Zysman Steven H.
Baran Kenneth C.
Kim Ted
Thorpe Timothy
United Technologies Corporation
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