Research Catalog

Active control of fan noise--feasibility study

Title
Active control of fan noise--feasibility study [microform].
Publication
[Washington, DC] : National Aeronautics and Space Administration ; [Springfield, Va. : National Technical Information Service, distributor, 1994- ]

Details

Additional Authors
United States. National Aeronautics and Space Administration.
Description
v.
Series Statement
NASA contractor report ; 195392, 195440, 198511, 198512, 198513, 198514
Uniform Title
  • NASA contractor report ; NASA CR-195392.
  • NASA contractor report ; NASA CR-195440.
  • NASA contractor report ; NASA CR-198511.
  • NASA contractor report ; NASA CR-198512.
  • NASA contractor report ; NASA CR-198513.
  • NASA contractor report ; NASA CR-198514.
Alternative Title
  • Active control of fan noise feasibility study
  • Numerical computation of acoustic mode reflection coefficients for an unflanged cylindrical duct.
Subject
  • Acoustic ducts
  • Acoustic propagation
  • Aeroacoustics
  • Aerodynamic noise
  • Computerized simulation
  • Controllers
  • Ducted fans
  • Effective perceived noise levels
  • Engine inlets
  • Engine noise
  • Exhaust systems
  • Fan blades
  • Jet aircraft noise
  • Noise reduction
  • Pressure ratio
  • Sound generators
  • Turbofan engines
Note
  • Shipping list no.: 95-0479-M (v. 1), 96-0227-M (v. 2), 98-0277-M (v. 3), 98-0832-M (v. 4), 98-0357-M (v. 5), 98-0832-M (v. 6).
Reproduction (note)
  • Microfiche.
Contents
v. 1. Flyover system noise studies / R.E. Kraft ... [et al.] -- v. 2. Canceling noise source-design of an acoustic plate radiator using piezoceramic actuators / F.G. Pla and H. Rajiyah -- v. 3 Active fan noise cancellation in the NASA Lewis Active Noise Control Fan Facility / Frederic G. Pla and Ziqiang Hu, Daniel L. Sutliff -- v. 4 Flyover system noise studies, Pt. 2 / R.E. Kraft ... [et al.] -- v. 5. Numerical computation of acoustic mode reflection coefficients for an unflanged cylindrical duct / R.E. Kraft -- v. 6 Theoretical analysis for coupling of active noise control actuator ring sources to an annular duct with flow / R.E. Kraft.
Call Number
READEX Microfiche NAS 1.26:198511-198514
OCLC
marcive32802632
Title
Active control of fan noise--feasibility study [microform].
Imprint
[Washington, DC] : National Aeronautics and Space Administration ; [Springfield, Va. : National Technical Information Service, distributor, 1994- ]
Series
NASA contractor report ; 195392, 195440, 198511, 198512, 198513, 198514
NASA contractor report ; NASA CR-195392.
NASA contractor report ; NASA CR-195440.
NASA contractor report ; NASA CR-198511.
NASA contractor report ; NASA CR-198512.
NASA contractor report ; NASA CR-198513.
NASA contractor report ; NASA CR-198514.
Reproduction
Microfiche. [Washington, D.C. : National Aeronautics and Space Administration, 1995- ] <7> microfiches.
Added Author
United States. National Aeronautics and Space Administration.
Added Title
Numerical computation of acoustic mode reflection coefficients for an unflanged cylindrical duct.
Gpo Item No.
0830-H-14 (MF)
Sudoc No.
NAS 1.26:195392
NAS 1.26:195440
NAS 1.26:198511-198514
Research Call Number
READEX Microfiche NAS 1.26:198511-198514
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