1、.+.s- -_.-: _ .-.1.-. .“8-.-”!$i.-.-“,? “-),; =._-.-.-.No, 766.; h STUDY OF THEAIR MOVEMENTS Ill!T!XOAIRCRAFT-ENGIIJE CyLDERSBy Dana W. LeeLangley Manoria.1Aeronautical Lahoratcryy ,.,. .-. :h ,. .-.”. ., :,!:., -. . .,.-Wzshiz:. ,N.JLC.A. TeohnicalNoteh. 766 Fig.1.r -1Figure1.- GlasB-cylindernpparn
2、tuawithswirl-induoinghead.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-.Figure2.- Swirl-inducinghead similarto thatusedon the Wri. R-1820-Gengine. Figure3.- Swirl-inducinghead similarto thatdevelopedby theEclipseAwiaticn wCorpxmtion for use with t
3、he Fratt& WhitneyWasp engine. .W-%.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-N.A.C,A.TechnicalNoteNo.766 Fig.4rkja,“300280260240220200f80/60140m120)d8060402011111I I I I I ICrank angle, deg(a) Enginespeed,KJOr p m (b)Engineepeed,500r pm (o)Engi
4、nespeed,1,000r P mFigure4 a to c.- VelocitiesoffeatherswhenueingR-1S20-Ghead.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-N.A.C.A.TechnicalNoteNo.766 Fig.5.J?,Expansion Exhcwsf 360 Expansion ExhaustCrank angle, oeg(a) Enginespeed,350r p m (b)!nginespeed,500r p m (c)Enginespeed,1,000r p mFigure5 a to c.-Veloci.tiesoffeatherswhenusingEclipse-Waephead.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
