LEADER 01819oam 2200541Ia 450 001 9910701942203321 005 20120724151220.0 035 $a(CKB)5470000002422697 035 $a(OCoLC)801538661 035 $a(OCoLC)865558304 035 $a(EXLCZ)995470000002422697 100 $a20120724d1983 ua 0 101 0 $aeng 135 $aurbn||||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 00$aTurbofan aft duct suppressor study$b[electronic resource] $econtractor's data report of mode probe signal data /$fG. H. Fiske ... [and others] 210 1$a[Cleveland, Ohio] :$cNational Aeronautics and Space Administration, Lewis Research Center,$d[1983?] 215 $a1 online resource (72 pages) $cillustrations 225 1 $aNASA CR ;$v175067 300 $aTitle from title screen (viewed on July 24, 2012). 320 $aIncludes bibliographical references (pages 165-167). 517 $aTurbofan aft duct suppressor study 606 $aAnnular ducts$2nasat 606 $aEngine noise$2nasat 606 $aNoise measurement$2nasat 606 $aNoise prediction (aircraft)$2nasat 606 $aNoise reduction$2nasat 606 $aSound propagation$2nasat 606 $aTurbofan engines$2nasat 615 7$aAnnular ducts. 615 7$aEngine noise. 615 7$aNoise measurement. 615 7$aNoise prediction (aircraft) 615 7$aNoise reduction. 615 7$aSound propagation. 615 7$aTurbofan engines. 700 $aSyed$b A. A.$01406754 701 $aFiske$b G. H$01406755 712 02$aLewis Research Center. 801 0$bGPO 801 1$bGPO 801 2$bGPO 906 $aBOOK 912 $a9910701942203321 996 $aTurbofan aft duct suppressor study$93486433 997 $aUNINA