This 1966 instruction manual provides a common survey of the vital components affecting the flight of projectiles, and describes the tools widely used for predicting and influencing the flight functionality. The coefficients which signify the aerodynamic forces and moments on a relocating physique are pointed out, tools of deciding on the coefficients appropriate to a projectile having a given form and middle of gravity place are defined, and the coefficients of a couple of projectiles and projectile shapes are given. using aerodynamic coefficients in predicting balance, diversity and accuracy is defined. the consequences of diversifications in projectile form and heart of gravity position on diversity, accuracy and lethality are mentioned. a few fabric on prototype trying out and the results of round-to-round diversifications in creation plenty is gifted.
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Additional info for Engineering Design Handbook - Design for Control of Projectile Flight Characteristics (AMCP 706-242)
If this \\-err not so, zoned fire. , firing with re- t l ~ t c . Il;rrgc.. l tir~~l~ri~c+ticnl. ic11 c . r c,;t~lst. s. ~ al lost. airs1)eed n ~ u c h niorr rapitlly tila11 they lost1 spin. The value of s, thus nrarly al~vaysi~lc*reasesas the projec4ile flies t1ow11 range. The stability factors of projectiles fired a t high quadrant c~levatiollscan. ~ ~ n l e sprojrrtile s velority is ~naintainetlby rocket thrust. reach quite largr a t tllc~sulnnlit of tht. trajcc#tory. asc~s i ~ rbotlr vrlority anti air tlrtlsity.
Vas H f11111atio11 c ~ fIIII* g c ~ o ~ ~ ~ c ~ t rllc~\vcvc~r, y t l r r t ~ wit11 yaw scll~nrccl, in 11n11n1lynho~rt. of I11e npikcb. c? v 11s Irtrgtr an C x , . d11nI f i ~ w , wit11 its r r ~ ~ r i oc*trcvt ~ ~ s O I I Itc+twrwy, r~rotlt*r~~ s~~ikc*-~~olrc*tl rc11111t1s Itre. t11. r~rlys~~l~srrtliorr of 1111. flow. t l y ~ ~ r r ~st~rbility ~ ~ i c - ~r~rry I)e impaired no l i ~ a thc! t ncat, Figtrrc- 4-2 nlrown t111. I. fFec:t on tirag may bc unfavorable. low ~ ~ a t t cI *I ~rO~( I~I I C C11y ~ n I'he above observations apply to fins as well arr epike-nosed projectile.
0 the tbl"ee photographs at the lower riltht hand l'I>rnl'r(O ), ,Thil'ker spikes Ahowed delayed sl'paration at Mhorter lengthR ( Rel, 35b). Figure 4-2. hc. c. \vas H f11111atio11 c ~ fIIII* g c ~ o ~ ~ ~ c ~ t rllc~\vcvc~r, y t l r r t ~ wit11 yaw scll~nrccl, in 11n11n1lynho~rt. of I11e npikcb. c? v 11s Irtrgtr an C x , . d11nI f i ~ w , wit11 its r r ~ ~ r i oc*trcvt ~ ~ s O I I Itc+twrwy, r~rotlt*r~~ s~~ikc*-~~olrc*tl rc11111t1s Itre. t11. r~rlys~~l~srrtliorr of 1111. flow. t l y ~ ~ r r ~st~rbility ~ ~ i c - ~r~rry I)e impaired no l i ~ a thc!
Engineering Design Handbook - Design for Control of Projectile Flight Characteristics (AMCP 706-242)