01146cam--2200385---450-99000126040020331620130308130939.00-13-345850-4000126040USA01000126040(ALEPH)000126040USA0100012604020031114d1977----km-y0itay0103----baengUS||||||||001yyFuture developments in tele-communicationsJames Martin2. edEnglewood CliffsPrentice Hall1977XVIII, 668 p.24 cmTelecomunicazioniBNCF621.38MARTIN,James25872ITsalbcISBD990001260400203316621.38 MAR 13072 Ing621.3800313662BKTECSIAV21020031114USA010951PATRY9020040406USA011730CHIARA9020130308USA011301CHIARA9020130308USA011306CHIARA9020130308USA011309Future developments in tele-communications986189UNISA02048nam 2200565Ia 450 991069953420332120230902162201.0(CKB)5470000002403586(OCoLC)659505385(EXLCZ)99547000000240358620100830d1992 ua 0engurbn|||||||||txtrdacontentcrdamediacrrdacarrierAcoustic mode measurements in the inlet of a model turbofan using a continuously rotating rake[electronic resource] /Laurence J. Heidelberg and David G. Hall[Washington, DC] :[National Aeronautics and Space Administration],[1992]1 online resource (30 pages) digital, PDF fileNASA technical memorandum ;105989Title from title screen (viewed Aug. 26, 2010).Includes bibliographical references (pages 6-7).NASA technical memorandum ;105989.Acoustic measurementnasatAcoustic propertiesnasatDucted fan enginesnasatEngine inletsnasatEngine noisenasatJet aircraft noisenasatMicrophonesnasatPropagation modelsnasatShrouded propellersnasatAcoustic measurement.Acoustic properties.Ducted fan engines.Engine inlets.Engine noise.Jet aircraft noise.Microphones.Propagation models.Shrouded propellers.Heidelberg Laurence J1401979Hall David G(Engineer)86645United States.National Aeronautics and Space Administration.GPOGPOBOOK9910699534203321Acoustic mode measurements in the inlet of a model turbofan using a continuously rotating rake3471521UNINA