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001 ocn302340104;

003 OCoLC;

005 20090210090137.0;

006 m d f ;

007 cr c||||||||||;

008 090210s1989 vaua ob f000 0 eng d;

037 a| N 89-27465b| NASA;

040 a| GPOc| GPOd| MvI;

049 a| ERE#;

074 a| 0830-D (online);

086 0 a| NAS 1.15:101624;

245 00 a| Reduction of blade-vortex interaction noise using higher harmonic pitch control /c| Thomas F. Brooks ... [et al.].;

260 a| Hampton, Va. :b| National Aeronautics and Space Administration, Langley Research Center ;a| US Army Aviation Systems Command, Aviation R & T Activity,c| [1989];

300 a| 17 p. :b| digital, PDF file;

336 a| textb| txt2| rdacontent;

337 a| computerb| c2| rdamedia;

338 a| online resourceb| cr2| rdacarrier;

490 1 a| NASA technical memorandum ;v| 101624;

490 1 a| AVSCOM technical memorandum ;v| 89-B-005;

538 a| Mode of access: Internet from the NTRS web site. Address as of 2/09/09: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19890018094%5F1989018094.pdf ; current access is available via PURL.;

500 a| Title from title screen (viewed Feb. 9, 2009);

500 a| "July 1989.";

500 a| GPO Cataloging Record Distribution Program (CRDP).;

504 a| Includes bibliographical references (p. 10).;

650 0 a| Rotorsx| Noise.=| ^A332646;

650 7 a| Acoustics.2| nasat;

650 7 a| Blade-vortex interaction.2| nasat;

650 7 a| Control systems design.2| nasat;

650 7 a| Noise reduction.2| nasat;

650 7 a| Pitch (Inclination)2| nasat;

650 7 a| Propeller noise.2| nasat;

700 1 a| Brooks, Thomas F.=| ^A797015;

710 2 a| Langley Research Center.=| ^A192893;

710 1 a| United States.b| Army Aviation Research and Technology Activity.=| ^A435693;

776 1 t| Reduction of blade-vortex interaction noise using higher harmonic pitch control.h| 17 p.w| (OCoLC)26124010;

830 0 a| NASA technical memorandumv| 101624.=| ^A467613;

830 0 a| AVSCOM technical memorandum ;v| 89-B-005.=| ^A437489;

856 40 u| https://purl.fdlp.gov/GPO/LPS108702;

949 a| Click on web addressw| asish| joyner94;

596 a| 1;

998 a| 1483020;

999 a| CLICK ON WEB ADDRESSw| ASISc| 1i| MQ2858203l| JNETm| JOYNERr| Ys| Yt| JNE1DOu| 3/23/2009x| EDOCUMENTz| JERESOURCEo| .STAFF. 0;

Reduction of blade-vortex interaction noise using higher harmonic pitch control / Thomas F. Brooks ... [et al.].

Other author	Brooks, Thomas F.
Other author	Langley Research Center.
Other author	United States. Army Aviation Research and Technology Activity.
Format	Electronic
Publication Info	Hampton, Va. : National Aeronautics and Space Administration, Langley Research Center ; US Army Aviation Systems Command, Aviation R & T Activity, [1989]
Description	17 p. : digital, PDF file
Supplemental Content	https://purl.fdlp.gov/GPO/LPS108702
Subjects	Rotors--Noise.

Series	NASA technical memorandum ; 101624 AVSCOM technical memorandum ; 89-B-005 NASA technical memorandum 101624. ^A467613 AVSCOM technical memorandum ; 89-B-005. ^A437489
General note	Title from title screen (viewed Feb. 9, 2009)
General note	"July 1989."
General note	GPO Cataloging Record Distribution Program (CRDP).
Bibliography note	Includes bibliographical references (p. 10).
Technical details	Mode of access: Internet from the NTRS web site. Address as of 2/09/09: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19890018094%5F1989018094.pdf ; current access is available via PURL.
GPO item number	0830-D (online)
Govt. docs number	NAS 1.15:101624
Stock number	N 89-27465 NASA

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Reduction of blade-vortex interaction noise using higher harmonic pitch control / Thomas F. Brooks ... [et al.].

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