Active control of fan noise--feasibility study
Contributors: United States. National Aeronautics and Space Administration.
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.
Publisher: National Aeronautics and Space Administration; National Technical Information Service, distributor
Published: 1994
Place of publication: [Washington, DC]; [Springfield, Va
Language: eng
Format: Microform
Other titles: Active control of fan noise feasibility study.; Numerical computation of acoustic mode reflection coefficients for an unflanged cylindrical duct.
Notes: 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).

Microfiche. [Washington, D.C. : National Aeronautics and Space Administration, 1995- ] <7> microfiches.
Table of contents: title: v. 1. Flyover system noise studies / R.E. Kraft ... [et al.]; title: v. 2. Canceling noise source-design of an acoustic plate radiator using piezoceramic actuators / F.G. Pla and H. Rajiyah; title: v. 3 Active fan noise cancellation in the NASA Lewis Active Noise Control Fan Facility / Frederic G. Pla and Ziqiang Hu, Daniel L. Sutliff; title: v. 4 Flyover system noise studies, Pt. 2 / R.E. Kraft ... [et al.]; title: v. 5. Numerical computation of acoustic mode reflection coefficients for an unflanged cylindrical duct / R.E. Kraft; title: v. 6 Theoretical analysis for coupling of active noise control actuator ring sources to an annular duct with flow / R.E. Kraft.