t I

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\lilic -s l\\ o-stitgc ror:lfiberglass G10 Iins mounted in slots rvith rhrough the u.all aLtachment to Lhe motor mounl. When buik using their stanclard clirec tions. ihis rocket is latecl lor motots lttrm H73J (29mm) Lhrough an 161w (38mm), utich can put the rocket over 5000 leet. If ,vou are meticulous in meering their con slruction recomrrendations, the)' hint rhat

Rockets Engineered for Performaoce

'- www.mercury-rockets.com

SPOBT ROCKETRY MAY/JUNE 2OO9 23 Addlng more la)'ers. lr,u break the frbers during sanding, so its tip. One does not have to necessarily PlasiLicare lnc. [3]. \-ou need the rddltior.ral layer of llberglass g,,r' h..t-1 l.'.1-. t''. a' -n et'rg rhe with the cioth threacls at a 45 de$ee angle stlengthens laminalion lo protect the carbon l1ller. Tlle nn hlet Ln- riot rJ\ d rh- lt'i-k.l-uL lr to the previous laminaLion, "L ,,'t,t, nn HosP'cr I t't'Lr' nlosl commonly avaiLable rype o[ carbon makes the oi'erall Lask easier to do il your tl c ".'cc r r r 6ber is i.8 ounce 2x2 twill u'eave and tvill r,vill be usrng liber rlr r;dc e i' ru'rl1 ,l,..re'l cover Lhe $,hole Iln. \Ve ferlurrn-n carbon r lrolta rrea 'o nnc'huuld r .osr ).ou about $5O/yard. Shipping glass cloth and other mole high-tech com- iergl "nd g"l .ar.i.O dud\ \v.ih e\!e\\ \L - r!. hber is more e\pensile, because they can't Dosrtes lor Iammallng. 'r rhc urlgll r' l-ld ir like hbergiass to El in a Priority Mail t fihcrsli.,: c'nth '. r '.cd rn .un.e9 per m- rr i: rl dLlPdl' lt'D"'L you corLld brrr lr needs to ship supporLed by a card- jouarc \'aro r_loth rr.tl, ru'. nl.nce'per \\'ith too much excess weight you hit lvith a larger boirrd tr,rbe because the carbon 6bers rvill t -orr-t- ra-t' i. he r ;rrd Lnlil(r. J ld hnd that the alLtrude : '' motor was the same as if you had lelt the break rl bent too tighrllr ha. -^al5(" hoe'' rrd'argcr '-l- l,sl Aen(r"ll' and florvn it with a small'r The high temperatures thilt a veN denrions in lhe weaYe. I found early on rocket alone fiher rocket .n.ounters rvill affect the epoxy cloth required me motor. Three-quarler (3/4) ounce that using an B ounce more lhan the cloth glass cloth is very sheer and can be used resin thar )1irl use to acld an addrLional la1er o[ Lhin 2 ounce po$er rockets wilhortt r.inlLrrcemenr mate als, so a good grade to smooth out the surface Thar on modeL and mid cloth iust n-nndator\r There is a GLass , adding too much welght. Whatever lrher r.f epo\\' is DJ, morc uDo\\ lno u.'tsht' on LrP fin' (Tr) u nc,r ju,t mal.e P ,r ' TrinsitL.)n femperalure that the ep N h,cn taler'a, c. leo I he Oer lo m'rr' e cl r l'r rLo',.lorh 1. 't touglo ,a'l .nt,, rhe '' - .\ ".rn.,tr.'1,.(. u\F lo ralc'l_e'_ rc.r' rocket. You also need Lo make sure that the .o and fle'rble. \\-i-rtn ;r r,rcket reaches Lhe lransition Lem- cloth is thin enough to easily lay llat and lers and grooves. rockets that require ertril i-i.r,1rure. rhe resin goes from being hard follolv the contours of the rocket. Rea1ly lasL clt \vilh lho"l rl'"r .rnC rieid ro srrft ar.rd pliable. That doesn't Most projects that will stay under the sll'en2ih .n ltJ stdrr 'amin,rllon comes apart, il happens to be . rne nl''l .-rld '' r1e.in lt lust sJeed Jl 5ou''ld, ;rr a b.. he;'11 o ' e loLri . " '1" ^r 'l light frbergLass. fhe ar-rtr'- n1(r:e lle\ible:it that poi]1t. l've had gleat rnllr,en.-. Lr, .'hcr lc. .-., rr r,y need ruith a layer o[ " because sria..js using the \\iest System 14] epoxy irghL*"rgcL oun,e.tvlc lt2 notiYe bo)s jusL lo\:e carbon fibel or eld'.e.o, I r,vhich has 'l'15 and has a racy look Itrl re-.rn rrnd rhe 20i harderer, I he rpl rs. .lo n. oecJ J 'e '5 cu lh(ien' Lo 1t is light, s[ong, T. oi L-10 degrees Fahrenheit. I like --1o\, L'cL dr'o-l' Carbon fiber has the highest strength per r 12i -,r".lp,,hca r a1\ 'o' "DD''' can gel Howe\-e1. cill_ thalr pur-ip s\-slem thal measures out how Thi.s ivelght clorh costs about 1i7.50/yarcl weight option )ou like pencil lead s-hen r'r'rriah tLrr-r need ancl ir is handy Ior doing from my local supplier in lhe DenYer area, bon fiber becomes I Ia ******************* ready to make the jumP? ** Are you 18 chapters, 388 pages,800 photographs and almost you need lo know to move ahead in HiEh iCU$OilL ESIES,I "ueryLhirg Power Rocketry Ll through L3. ouAsAR QltE, What are you waiting for? i I $32.50 Plus 4.00 shiPPing ond * * (Free shipping to NAR/Iripoli/CAR members ) * * QUE$T Modern HPR Press * * 2904 Harlinsdale Drive * . Rockets. Engines o Bulk Pocks *. . . Brand New Rock Hill, 5C29732 * Accessories Ports * ol * for 2005-2006! For more info: nrww.modetnhPr.com * Also available at Amazon.com : 4io/o OFF : * Suggesled Refqil Pilce * ** I Selld lu *'. Your * WGre@uA&lrvEASffiM t lrce cotolog ot visit us ol, * PARffi" I Bellev;rle whoresole HobbY lnc. * R@€K€Trurui& 4944 ; Llewellyn Rood * a WE SELL LOW TO MID POWER ROCKIT KITS o BUILDING PARTS ? Delleville. l,L62223-1904 WE SELL ROCKET * a ROCKET DECALS www.bellevillehobbY.co'" WE SELL I * a WE SELL ESTES AND CUSTOM ROCKET KITS + www.esres'ocl{etswholesole.com * a WE DISCOUNT OUR PRODUCTS *I cot,tott Free; 1-866-250-5049 * CHECK US OUT! *"'* or. 1-618-398-3972 WA/W.QUASARON EROCKETS.COM ******************* 24 MAY/JUNE 2OO9 SFOBT BOCKETBY incremental iobs. 1r has a pot life o[ about bon fiber, resin, and hardener, you will also 20 minutes and gives you 60-70 mii-rutes Three-quarter u/ant to get a box ol latex gloves. Yodll go o[ u'orking time and will Iully cure in 6 8 through a lot of these. Ger a plastic squee- .ou') or la.rp. il ior blow hor a]- o\P|ir. (3/4) ounce gee lrom the same place for smoothing which is called post-curing). west System fiberglass out the cloth. Drop by your local grocery 105/205 rvas origlnally designed for the cloth is yery sheer store and ask the butcher for 12 feet of his boating industrir waxed butcher papeq and pick up a bottle o sl "t r Vr.'W makc,Jnequ'n,lerl re-tn and cdnbe used ol denatured alcohol and some papel tow and hardener to West System called MVS els for cleaning your rvorkspace, rocket, t (Marine Vehicle System) but they also of and tools. I onmodel and fer a higher T* resin called Aeropoxir This Nor,v comes Lhe fun and busy parL, Lhe has a T* of 194 degrees Fahrenhett, but mid power rockets acrual tip-ro-tip glassing (or laminating). Lakes much longer Lo cure (overnight) be This will accomplish two goals: one is 1am lbre you can handle it. Post curing (at B0 without adding too inating the fins together with the airframe to 90 degrees) helps this resin cure faster. to make it a one-piece strucLure. It doesn't For amateur rocketry applications, Scot muchweight. matter ifyour airlrame is made out of G10, Stettler at PTM&W recommends their phenolic, or Quantum tubing, rhe tech PR2032 resin and PF3630 hardener, rvhich Whatet,er fiberglass nique will be Lhe same. The second goai rvill start gelling in 30 minutes. They have is to change the resonant characteristics of other aerospace quality resins rhar have T, clothyoufind, just the 6ns by using layers olborh carbon fiber values above 300 degrees, but this stuff and fiberglass cloth. Sandwiching the tr,vo will take a rveek to cure unless you have an mahe sure it is so/t different materials together will eliminate oven and have ways to keep the resin from andJlexible enough rhe likelihood of 6n flurter. runnlng away, such as vacuum bagging. If It! assumed at this point tl-iat your rock your bird is going to approach Mach 2, you to into the et or fin-can has the 6ns solidly mounted might consider using Aeropoxy and build fall fillets in tl.ieir slots and has epoxy fi1lers on Lhe 6n ing your prolect in a heated space. dnd grootes. roots. You need the fillets to insure that the When you order your fiberglass, car cloth will wrap smoothly over the lln/air- t I I

SPORT BOCKETRII MAY/JUNE 2OO9 25 h.,:Jir:. cr-rt thire l)^ttcins rrut oJ thc aar' lr.,l ril-.rr'lr-rcl Lluee palterns oLit ol Lhe ll 1r.r il.r:s .[th \\'ith i pair ol scissors. \vole : i'. ,,i.r.: rtci r-nrnencled to me to Put Lapc rr.L:nd th. .dgcs rrl thc .irbrrn hller lrld :.r.::.t1t.. rLrLh ltelore cLLtLing L(r lieep Lhem

, I rlr. ' r...-,1r. hrrcler to Etr-t the cloth Lo lal flat. ir :..t]r. ,]l LI',a piclures I aln LLsinll are Lor ..:i::r' l-rl.l'..ud i+mm diameter rockets '.,.]r:r lJril rot Lrsc lhc tipe hoidcis \ou rtnLh -..: :ir L: \a\i 'r,.1: rirll trnt twL) \'orli surlaccs LhrL -.:-'i_rrril iLr rrr.h othel, ()l1e LllrL llr)ials lhc :-itra: nlr rLi i.r\bucl., ilnal Lhe .rLhcr lor i: \ -.: .r:rJ :prf.rriirlg thr .Po\) illLo th. - .1 - ' 1 ;11-r.1 encl lrbcrglass cloth I rLsccl - :-,' :'.1:Lri lolLLLng lrble: nnal pr)silurrltaL

[raruc joinl r]nal slcli to lltc sttthcc. l\1elie sr.f c the iirlrlma hchincL .rrtcl bctNccrt Lhc lLns rncl thc hn sutlircc: hl c htcrr loughccl Lrp L'lrorLgh \\'iLh 16tl gril srudpitltcl L(r r. nlo|c i1ll\ tha gLizc L.r1-r sirrglc shrct ol nctsprpct ol certL ....r f r.r L t| ,;I - . l', L.\t. '. r l' ,r.1. ..r'.- r Shilrprc milriier pcn. mirk Lhe shapc o[ 1o,l fins. This rvill becoure thc temirlill. lir cutring Lhe lLbergLass or carbon flber cloLh. ln thc lillo\rins cxaniple phrrtos. uhich sho* clllfclcnt rocliers. I chose 5 9 ounce calbLrn hber cloth ancl 2 ounce fi' berglass clorh. The laLtcr rvill be usccl 1o pr,rt o\er Lh. toP c,l t1-rc carbon Iibcr 1a)er. Giling in exLrl lnclr or motc along the

26 MAY/JUNE 2OO9 SPIORT ROCKETBY rir\.s.lIir] brl\\.rD l)Lrt (rlt .t 1ta!\'l)itir Lrl luLe\ !lLr\as. li1) ()lre ol thc arlt fiaras ol cill)o11 hbrt tlo\ n on thc Lirbl. Llret hrrs thr' lrtrtchcr p.tpet rrpcrl r,, iL \lir up th.' \\'csL \ysLrr .'1r ol irrtL lrclilc it ell ,,r.'r- tht Llrrth hlir lhc squaagcr arncl5l)rertcLrl rll ,r|cr unlLl Lhc cloLh is s]tu[tLcr[ l\\halr !ulLtriLLillg iil]al gl.Lss rlLrLh lihc Lhis. it t iLl ltccotrrr rlnr,rst lrirnspirranL-]. talppLrrq Lha squccgc. ritl tha hLrLchel p.rpcr 1o ralllorc thr a\.eis irrLo lr purlcllc oLr Llrc slcLt. (irnth lili Lrl) Lllc cl(rllr encl plircc thr rp,,\\ ratLlt.rtc(l .lrith o\ar L\o ol thc lins !th. oth.'r []n l)tLI)q sLr.tighr rlorrn] \\LLh roul hnsrrs. q.ntl) puill clrrun on Lhc (lrrrh. l)Ltshing it into thc [L It-t: l1t .e.h lirr root. L..trclulh spt..tcL .rnd nlrs\:i!a lhc clrrth on tltc ilirllllnra ilr rlr,' ccntr'r ol LhL d,,Lh rrrorrrrgtotercl cltch litt siLic to raLrr)rc xir llL).ltL5. Llrarr \\!rli loLrr rirr up lech Jin Lo ScL Lhl r'loth to sLrrk to th. l rr stlr irar' ll,l :ontrl crLts L1i tha Llrjth \prrl)an([Latl]rrr to tllail\is'r1 tllc;1f 1r:rnrc rLghL.rL thc l,erLrrr.{ ar rn\ crLls \1rLr r:r,rr h.li lr,,nr thr:lots L,r g.c. ii).lLli1 liir'p trpIinU il ltirL. jlltrr 1l'lc lrcl Lr,rilrnglrlgc Lrl Lhr hn.1 rrl lLr lhc r"oot. thc rair (rl th. irri .Irr. pui[ r on LLr,- L.rblr .\L tLni.5 \(iLL n]ight I. ,. Lsr tlrt :cqrLicqrr rr(r\\ '.(r a(lriitit!tLl\ \\:flr t(r l)fllg :ofra o IlriS al)o),) ltiali il lirirrr' rrnd snrLroth Lh.n1 oLlL lls wcll \\ liatr in1()aLIl tha rl,,Lh r,,nr tlr. xirlrxnr. 1{) tha 't,,],,,. thrs li (l(,na on tha othrr lirt PrtLrs. Lhrs,' Ioot. ucl lr,,nr :h. llrr trrr L,r tha 1o!)t f ) sLrl!\ \\iLlr rporl ILII Lllirl.ia \oLu lllrLsh picrls rr ill or cr 1up ertch otho rrrl l ill cL,r' ory t ill pLLclclrr ,rnLl r',,1r,. t ,,n tlla s( urr Ln{ \\,,r li rr.r. rljlh,-ulL L.rLcl r hrrr loLr ir c

SPORT ROCKETRY MAY/JUNE 2OO9 27 trling to nake e\ eD thing smooth Ro1l Lhe clolh over the edgcs ol the fins so t1-re clodr kind ol hangs dorvn a bit. Keep u'orking rhe ail pocltels ouL to the eclges, ancl push- ing bacl< the cloth into rhe root 1L1let il it pulls arval: Smooth oul any loose threads.

Tritn a$a) the ercess cloth while the epo\)' is still a bit pliablc.

After about 20 l0 minures. rvhen the epoxl is tacky ancl holding shape, 1ou cat.t lotate lhc lin can 120 .leBrees and repert rhe process. ,\lLer a liLLle more then an hour 1lu ri ill hale all threc lins done and the airflalnc overlapped. If 1,ou are prcssecl for Lime you can clo one pair ol ltns pct cvcniL-ig and cone brck t,:r clo the nexl let er, as 1-oull on11 bc mixtttg up lcsin :rncL herclener es you need it. .rrn. \. r.,.ll.e I ,,.r. r .... ,r..le -nd rhe ercess clolh ftom the fin eclgcs ancl Lhe tail of the airhame while elerything is still a bLL pliable. ,\t dre ltont ol rhe fins, abour an inch allo\e the leading edgr: o[ Lhe fin root, make a cut all around tlle ailfuamc LQ renoYe the excess llp Lhere and lo make a nicc e\en tlansitiol. ll your rvife lets 1'ou, take her fablic \\'heel cuttel to mallaces iI the) arent liLll) cur.d li ::b.':'rl.r.. \\h.'n rou [inish rvith the next illdrame laLer. vou har.e Lo u,ait a da1 ),ou ntight $.rnt t,, thraa iasirr,r-ri .tncl trim arvay d-re cloth Nor,'we uill starL apply ing the 2 ouncc lightly satrd thc areas that have btttt iov- .,I.1in L.i it i.l [rr ]+ hr)urs. fiberglass cloth. When carbon ltber cloth erecL tl-rus Iar, or;rt least in arexs \\'h.-ra lha\ L.irs .1 s.mcllng bl,rck. put back the is sanded, the c:rrbtln edges slar-r to c]ust rvill olerlap. ih.rmler ,,n rirc cclges o[ the [ns. Lightl) lval like pencil Ieacl, so Lhis layer of Use rhe squeegee an.l sonl. ritq> lL- r.rncl Lhi lln ancLrlrlrilnle surface to rcnrovc fiberglass hefus plotecl tl.ie carbon llber clean the epoxy off the butchet prp,:r ir. .rn\ silil.raa bicmi:hcs ;rs rvell. \\there rhe and also givcs it a much smoolher finish. twccn sessiolls. Pout aicohol orcl lha l-'.1 rLr{in rrLrirrrnic nreets Lhc ecLge rlhclc thc Epox), sticks Lo epoxl' best il it hasnt lull1' per and rvipe clo\\,n Lo rerro\ e Lhc old lr gl.-,s.inq.t:utcd. lt'athcr thrt cclge Lo make

2A MAY/JUNE 2OO9 SFOBT BOCKETBY gLlss (:lolh rr\.l thr fLjltpcr tapt. encl Lhen silrrala.l tllr c(lgts sn1(x)th. Keep in ntincL theL c bLu libcr rs concluclir'e. so Ll-rtrc hrs to bc rr Jelcl ol lLberghs: betlccn thr:

cor)l)c1 Li1l)a ilrd thc cxrlDLt lrhct to ltcL i1S in insLrl:rlor. l)n anolh.r nrulti sLrrge rochcr LLut hitcl -(iiitcs si.lc Pocl:. o1 llca\e1t. l ust-cl tltc salrlc glxssine tachllialLrc to lojlr threr pxr ellcl 54mrl alianlater itLrlrilmcs thxt c(rnI prLsccl thc l)or)star s.ction Lrl Lllc roclict I ht- trP to LLp gllts: rq \\ als sl) cild o\ er tlta ... t, I r.. \L .( l,r I r,.r lr . t..',1'rt strnct', howler. Lhc lins wcrc lrrrilrtecL scfiluLch lrom tlrc ilir lirntc Lrr rtrr[rlmcrc- inlrrrcCnrcnt. i1|al I Llsccl 1 inch \\iclc stnlts o\ er thr.l()lnls ltct\'ccn thc ritltltrrs. The lin looLs err IltLsh l itlt tltt Lnsrclc clirmercr lrr. r't t,..ll .'. ..' rlr u t-

llo\ rrcll clocs Lill ro tiP glrssn4 Ilol.l

iL srnooth A LigLit cLrat ol clc.rr cnlLrrcL crrn bc uscci to br in{ brr'li thrt i ur\ rir l)on libcr Site of LDRS 23 L!)ol( il \1)Lr lntrnd Lo ltxvc iL Lrnpxinlccl Vintage WWll Aircraft on site Onrc lorL gcL th. hlrng oi it, gl.rss rc Delicious HAG Burgers - iulLricLr'ig ,rorrr rrrclicl bccorrcs rcll crst Raffles and Contests end Jl thirli Lrl oLhar ilrcirs \oLr Li r use 1-Lru Youth Fly Free lt lbr ln .r t*rr stegc roclict I huilt Thc l\vins' (\1icli,r in.[ Ricli) ). ] r.ui copp.r loil Il.rrl .r. r'..r. tha eviorrlcs brl\'1o the bacli ol thc nrotrrr o1 Hosted by: l'' l. l.rr l" 1x l mile mowed grass WWlera airfield "'.1 ! ; Monroe Astronautical Rocket Society ol thc nr.trrr. This b.rsicrllr rnr(le r1 cLrcu MicroMax to N PreRegister for all Going strong in its 40th year $25 3 days ler citcuiL carcl oul ol mv roclict. ln ordcr Lrr l(r'cp Lha coppar lrdri tilrnrshLLrll lli Lhe Nerther. I put onc h\-cr ol l/-.1 Lrnnce hber''

SPiOBT ROCKETRY MAY/JUNE 2OO9 29 Lrpl lha lr'conaL sLilqa l)l nir lo.kaL lh' -lirins useLl Lip to t1P gl1tslrng o11 iLs lns l)urLng thc lirsL lliglrt rr! Lhi: r,rcket. e Leultl sctup ()l ?1n rlrLtntLcr s \hcl-t lLcler cirrr

tcnt citpl,,rntcnt lLlt1ltk\crroukL rlill Lher rt l rrr allltt. afcn tl il\\i1s(Irl!tht [rrrtenrncl (ln iur a\Pcrr(la(i 1{7[)t] nt()tr)r (Lhc rrst o1 th,: r.,.lt,.t ttcorcteLl selehl. illrPilcL. thr:L|iol1lcs b.rr in lt..rnt \rls(lLrsltad irnaltha nlota't ll, Li\\ilfagoL sh.,rerl Ic:rr\\rrrcls,-rr.rL ol llrcrrirllellle rltcr sh.,er.ing thc lllolor ratrinillg rin! t\an rh,.rr. rl1. lins sLx)ad onr \\iLIr I Lilll. Lrilrr- rring olthr lin c,ru. piccc L'l iorLpLir -rllrl rrilli.rrrlc:itLtlcd.rt t]lc LiolrL. I nc\\ rr ",-tcrt 'n'l lili cr t.ing () SClf\\ Olrt(t llte 111()t!)l lrlaLll1i Iha Iln clll] lllrS 11,r'elllC lrgllill ,11 ltlr()lh.r l lllLll rnolrLhs l.1Lat. Lhrt Lrnlc silcccsslltllr rltrcl go lor ii,. cl,,rsL oll th.LL old t'\lL CirllisLrj tl1.1l \rrll gol \,iLlr Ll rrn, {Llss Lht- lins. St)oi.r lcrrl Bibliography l1] PLrblir NLrssilc: LLcl.: \\\\\ lrLrl-rlr.rlllssilr'..rll Jll N(nth.nr (.olorrrcLr llork.'tr'. \.\R SicLlon J6i-\: ttrl tlcrocliclrr:org ionl L ll l'l.LSLirxr c ILtc. :,,r'l l.pLLsLLi.li.'ltli [-1] \\i'st 5r sLctl IPorr \\ \\ \\ \\ a:ti\ ilarlr .al]l \\'\!\\:plnl-\1 (rrn1 li] ,\croporr, -(cot StclLler. P l\lli\\ 11rJ.r-rLrit's: L6l l:lLrn.h phoLo crtdtLs ll.rr LrtPrrns,:. \-\R S-0-l!) htLp://ockcts lotollic Ir'l/

gO MAY/JUNE 2OO9 SPIORT ROCKETRY