1、u-. “- - =-.- -AYROXA?JT ICS -Aprj11 1*9M_ .Boa 801.-. .- ,. . _3y Carl J . Wenzinger and Job 3). 130we . -!Lanley hfeorial eronatl- . _- ;-:SJ-=W, .-L. -Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-.-“ NATIONAL ADVISORY COMMITTEE YOR AERONAUT1 CS
2、 “ “- “-J .- TECHNICAL NOT NO. 801TESTS OF ROULYD AND FL.4T SPOILERS ON-A TAP2?ZLEDIN TIIXNACA 19-FOOT PRIISSURE WIND TWNNEL3y Carl J. TTenzinger and JohnD. Bowen,SUMMARYKING .-. -._ mine t.ae most effective type, location, and size of sPoil- ., .n:_.er necessary to reduce %reatly the lift on t-he w
3、in%s oflarge flying boats when moored. The efect of t“he various .-.-spoilers on the lift, the dra, and. the pitchin%-oent. - -.:=characteristics of the tapered -ivinqwas measured over aranqe of angles of attack from zero to naxinum lift. The-,.=:most effective type of spoi.ier TVas found to %9 the
4、flattype with no space between i% and the win,% surface. -Z!ne-_. .:chordwse location of su a spoiler was not” critZcal -within the range, invesAigaten-vhil”are _s.inplflat -planks attached no,rnal”to the unner surfa_ce g?. ._IeNin%. -:=!lhb attachment and t.ha transpor;t”ion of such s?2Q$.e. -board
5、s is impracticable oq present-da;r a_irlanes and-asimpler nethod of ol)tainin,. , P, / )CL/.8 , ,/ ., A/Q.6 , /, # / /,/ wr ,!/.4 !; F / , . + / /w/,I ! r 4A 1 I I I,.).,2.,4 0 4 8 , 12 16 0 4“”8 12=- 16. .“28242016120804.0-.Angle of atack,a,degFigure9.-2O-percent-chordlocation.Figure8.-lO-percent-c
6、hordlocaiiFigures8,9.- Effectsof round spoilers. “.-. -A. ,.,. : .- .-.”on. .Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NACA Technc!? .8aaa)%J.20,icalNote No.801u-, s - - - i:0375c wlth-I.0125C gap -=F-”-I t I .0250C -/ / “ I -:O!jboc- -:0250c w
7、ith / .0250C gap-L!_ -; - - i*- c.0375c with.0125C gap II i IIf.0250cgap-I I I 1 I 11“ I Ill 1I I I ! , t I I 1“5 10 15 20.1.-Spoiler location, percent chordiigure10.- Effect on-lift coefficient-of location of flat poflers.t I ,050C.4 ic.+dIo 5 10 15 20Spoiler location, percent chordFigure 11.- Effect on lift ,coeff$cientof location of round-spoilers.-.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
