1、CORRELATION OF EXPERIMFXTAL AND CALCULATED EFFECTS OF PRODUCT OF INERTIA ON LATERAL STABILITY By Marion 0. McKinnq, Jr. and Hubert M. Drake Langley Memorial Aeronautica Laboratory Langley Field, Va. -!I! Winney, Jr. and Hubert M. Ibake A correlation of experimental and. calculatsd effects of the pro
2、duct of Inertia On the stability of the lateral oecillation of aIrplan has been ob Y 8d from rtlfght tests of a free-fwng air- plane model having a 42 stTept3ack.wQ-q and from calculations of the stability of the model. In order to provide a comgrehsneive correl.a- tion, th8 static directional stabl
3、liiq of the model was Varied by changing the vertical-tail area and tail l8nih and the inclinatfon of the longitudinal prQ.acipal. axis cf Inertia relative tc the w-ind aXis w the Bertloal-tail size and tail len posittve when formya* angular velocity, rediam per Second madlS d8nSity Of ati; SlU.J pe
4、r Cubic foot angle of sideslip, degrees except where otherwfss noted 8Jl3eablo,vertfcal tails, ran and -100 end. viias of the tail sLze,and the boundaries for the model with O“ and -loo %.a the tail lengandthata CertsAnmLnImIm =ooddmpLngof -the lettered tie necessity for considering th8 pL-mt of Tne
5、rtLa in Iateral- atibillty zmalyaes. - 2. ) bvarisnh %arirala 0.07p 0.036 0, 0.6 0.6 0.6 6 -4a 6.0 16.0 Y 9.0 9-o 9-D ors -iLw74+c, bu Q.oD74 + c, htaill -D.cq4+ qtall) +=0 O * %(tali) o+c, b.=) o+a, b.a C IP Q.29 +c %=u) -0.29 +cz pt-1 -0.230 + Cl PWU 0 5 Q.03p + ow4 -0.032 + c Q.0332 + aO1 r o.l2y
6、 + ca =(-I I =%a % (t-N OS.25 + ca =(-I o.lq + Cl =(-w % Q.OOgO + C wail) -“-mgo + %-1 Q*oogo + c4(tau) %-1 bpaema -O.l&cl 0 .OiBb %dl OimU are a.- rratBsfalLovlne eguelale: NATIONAL ADVISORY % (tsil) CCMMITTEE m AERDHAUTKS . c Provided by IHSNot for ResaleNo reproduction or networking permitted wit
7、hout license from IHS-,-,- NACA TN No. 1370 Fig. 1 NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Fig. 2 NACA TN No. 1370 -i- d I b NATIONAL ADVISORY C0HWTEE FOB AEROMJTICS - 1- - Provided by IHSNot for Re
8、saleNo reproduction or networking permitted without license from IHS-,-,-NACA TN No. 1370 Fig. 3 t Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Fig. 4 NACA TN No. 1370 Provided by IHSNot for ResaleNo reproduction or networking permitted without li
9、cense from IHS-,-,-NACA TN No. 1370 Fig. 5 r -_- - - - DO4 ,003 .m? .m/ 0 NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS rrqure 5.- Eficect of vcwy/nq same of tne stbdty Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Fig. 6 NACA TN No. 1370 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
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