LEADER 02202cam a2200517Ia 4500001    9957097583506421
005    20231120151734.0
006    m        d f
007    cr c||||||||||
008    090210s1989    vaua    ob   f000 0 eng d
035    ocn302340104
035    (NjP)5709758-princetondb
035     |z(NjP)Voyager5709758
037    N 89-27465 |bNASA
040    GPO |beng |cGPO |dMvI
049    DOCS
074    0830-D (online)
086 0  NAS 1.15:101624
090    Electronic Resource
245 00 Reduction of blade-vortex interaction noise using higher harmonic pitch control / |cThomas F. Brooks ... [and others].
264  1 Hampton, Va. : |bNational Aeronautics and Space Administration, Langley Research Center ;US Army Aviation Systems Command, Aviation R & T Activity, |c[1989]
300    17 pages : |bdigital, PDF file.
336    text |btxt |2rdacontent
337    computer |bc |2rdamedia
338    online resource |bcr |2rdacarrier
490 1  NASA technical memorandum ; |v101624
490 1  AVSCOM technical memorandum ; |v89-B-005
538    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    Title from title screen (viewed Feb. 9, 2009)
500    "July 1989."
504    Includes bibliographical references (page 10).
650  0 Rotors |xNoise.
650  7 Acoustics. |2nasat
650  7 Blade-vortex interaction. |2nasat
650  7 Control systems design. |2nasat
650  7 Noise reduction. |2nasat
650  7 Pitch (inclination) |2nasat
650  7 Propeller noise. |2nasat
700 1  Brooks, Thomas F.
710 2  Langley Research Center.
710 1  United States. |bArmy Aviation Research and Technology Activity.
776 1   |tReduction of blade-vortex interaction noise using higher harmonic pitch control. |h17 p. |w(OCoLC)26124010
830  0 NASA technical memorandum ; |v101624.
830  0 AVSCOM technical memorandum ; |v89-B-005.
945    DOCS |cNAS 1.15:101624
956 40  |uhttps://purl.fdlp.gov/GPO/LPS108702