NOVEL FORM OF DAMPER FOR TURBO-MACHINERY.

R. D. Brown, J. A. Hart

Research output: Contribution to journalArticle

Abstract

Anti-swirl vanes are used by some manufacturers to delay the full development of half speed circulation in annular clearance spaces. The objective is to reduce the aerodynamic cross-coupling in the forward direction. The novel feature of a jet damper is a number of tangential nozzles discharging against the rotor surface speed. Some preliminary results on a 33. 9 Kg rotor demonstrate that significant reductions in amplitude are obtained at the synchronous critical speeds.

Original languageEnglish
Pages (from-to)325-347
Number of pages23
JournalNASA Conference Publication
Publication statusPublished - 1986

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Machinery
Rotors
Nozzles
Aerodynamics

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Brown, R. D., & Hart, J. A. (1986). NOVEL FORM OF DAMPER FOR TURBO-MACHINERY. NASA Conference Publication, 325-347.
Brown, R. D. ; Hart, J. A. / NOVEL FORM OF DAMPER FOR TURBO-MACHINERY. In: NASA Conference Publication. 1986 ; pp. 325-347.
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NOVEL FORM OF DAMPER FOR TURBO-MACHINERY. / Brown, R. D.; Hart, J. A.

In: NASA Conference Publication, 1986, p. 325-347.

Research output: Contribution to journalArticle

TY - JOUR

T1 - NOVEL FORM OF DAMPER FOR TURBO-MACHINERY.

AU - Brown, R. D.

AU - Hart, J. A.

PY - 1986

Y1 - 1986

N2 - Anti-swirl vanes are used by some manufacturers to delay the full development of half speed circulation in annular clearance spaces. The objective is to reduce the aerodynamic cross-coupling in the forward direction. The novel feature of a jet damper is a number of tangential nozzles discharging against the rotor surface speed. Some preliminary results on a 33. 9 Kg rotor demonstrate that significant reductions in amplitude are obtained at the synchronous critical speeds.

AB - Anti-swirl vanes are used by some manufacturers to delay the full development of half speed circulation in annular clearance spaces. The objective is to reduce the aerodynamic cross-coupling in the forward direction. The novel feature of a jet damper is a number of tangential nozzles discharging against the rotor surface speed. Some preliminary results on a 33. 9 Kg rotor demonstrate that significant reductions in amplitude are obtained at the synchronous critical speeds.

M3 - Article

SP - 325

EP - 347

JO - NASA Conference Publication

JF - NASA Conference Publication

SN - 0191-7811

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