Manufacturer: | Scratch |
Brief:
T' RAAM, ya bilge rat, otherwise known as t' "Radical All American Missile", shiver me timbers, is a
semi-scratch built 2" HPR model that is dual-sized and can fly on a range
of motors from an F40W with t' short version t' a H180W on t' long version of
the model. It be built with left over parts from a recently demised PML AMRAAM
2, ya bilge rat, but has only t' lower fins, matey, hence it is half an AMRAAM, otherwise known as
the RAAM. Avast, me proud beauty! Blimey! Aye aye! Blimey! These reasons are how I came about its name.
Construction:
Recently, I lost me first PML AMRAAM 2 after many launches t' a premature
nosecone ejection in mid-flight on an H128W and wound up havin' a torn Quantum
body tube that was too much trouble t' repair. Avast, me proud beauty! Ya scallywag! I purchased a replacement AMRAAM
2 kit, shiver me timbers, which can also be reviewed on t' EMRR site, matey, me hearties, but then was left with a
totally intact aft fin assembly, me hearties, matey, matey, piston, shiver me timbers, strap, ya bilge rat, me hearties, shock cord and nosecone. Ya scallywag! Ahoy! The
only components purchased were a PML 2" bulkhead assembly, a PML 2"
coupler, me bucko, a PML 36" x 2" Quantum Body Tube, a pair o' 2.26" x
¼" Acme conformal launch lugs and two 1/8" quick links.
I began by cuttin' t' torn body tube from t' old AMRAAM 2, which left a lower section and fin assembly 10" long and completely built, ya bilge rat, ya bilge rat, including the still attached piston and shock strap. Ya scallywag! Begad! Blimey! T' inside area be cleaned o' old, hard t' reach ejection powder and then sanded usin' 80 grit sandpaper. Next, ya bilge rat, a PML 2" coupler be cut lengthwise and slipped over t' black shock strap, then epoxied into t' lower fin body tube assembly so it was flush with the upper motor mount centerin' ring. Aye aye! This completed t' preparation o' t' lower, left over fin unit.
Next, me hearties, shiver me timbers, I cut
the 36" length o' new Quantum body tube into two 18" lengths. One of
the 18" sections o' body tube was integrated into t' lower fin section. Begad! I
roughed up t' inside o' t' body tube, me bucko, then pushed t' piston assembly
completely through t' tube. Begad! T' lower part o' t' shock strap was covered with
maskin' tape in case epoxy dripped on it from t' next step. Avast, me proud beauty! 15 minute epoxy
was used t' glue it over t' split coupler t' t' fin section, and left me a
completed lower half o' t' rocket. Avast! T' maskin' tape be removed from t' shock
strap and I did tape up t' outside o' t' body tube seam until t' epoxy set
to help center t' tubes with each other. Avast, me proud beauty! As a last step, shiver me timbers, matey, t' nosecone was fit
to this lower tube and a 1/8" pressure relief hole was drilled through the
body tube two inches below t' base o' t' nosecone. Avast! Begad!
T' upper o' these two tubes was sanded on t' inside at one end and t' new PML bulkhead was epoxied inside this upper body tube. Begad! In t' next step, I coated t' bulkhead ply face with a layer o' epoxy t' make it powder proof and easier t' clean. Ahoy! Well, blow me down! T' bulkhead was pushed into t' newly completed lower section and fit well. Ya scallywag! Finally, I installed t' original nosecone into t' top part of this upper tube, then marked and drilled a pressure relief hole into t' upper tube about two inches below t' base o' t' nosecone. Arrr! Aye aye!
T' lower
section was stripped o' t' old AMRAAM paint usin' Acetone and Denatured
Alcohol, me hearties, shiver me timbers, then it was sanded with 400 grit wet/dry sandpaper and primed with
Krylon and "Painter's Touch" white primers. About 6 coats o' primer
were applied and final sanded with 600 grit. Ya scallywag! It didn't take much t' prime; the
lower fin section be already glassed, ya bilge rat, me bucko, sanded and primed prior t' building
since it was a leftover. Begad! Avast! Also, arrr, since Quantum tubin' was used, t' new sections
primed like a dream and only 600 grit sandpaper be needed t' smooth them out. Aye aye! Avast!
I painted t' body tube from t' blue seam forward in White Krylon Glossy. It was masked at t' blue seam so t' lower fin section was still primer only. Four coats o' white were added, and t' last coat was thicker then t' rest. Once finished, I let it dry overnight, arrr, shiver me timbers, then masked off t' stripes and used Red Krylon Glossy t' paint t' irregular stripes, which covered in two coats. Avast, me proud beauty! Aye aye! The nosecone was painted next with four coats o' Krylon White Glossy. Ya scallywag! I then removed t' maskin' from t' lower area, masked off t' striped upper section and painted this fin area with four coats o' Krylon Dark Blue. Aye aye! Arrr! It left the joint where t' blue and White meet seamless, shiver me timbers, which is what I be shootin' for.
T' upper section be next. Avast! Well, matey, blow me down! I masked off t' area from t' top stripes down, then began workin' on t' stars. Well, blow me down! I used Paintshop Pro t' make t' stars, then printed them out on paper. Well, blow me down! T' stars were cut out in paper strips, 8 at a time and placed and scotch taped down over a 1" thick strip o' maskin' tape which be laid on a cuttin' board. Aye aye! Begad! I used a Exacto t' cut out each star from the maskin' tape and placed them in t' appropriate positions. Arrr! Avast, me proud beauty! 4 coats of Krylon Dark blue were painted over t' upper section and nosecone and left to sit overnight. Then I removed t' maskin' tape stars and viewed t' final product for finish.
Once t' model was completely painted, I fastened t' shock cord t' the piston and used a drop o' epoxy t' hold it in place. Well, blow me down! A 1/8" quick link was tied t' t' cord for quick removal o' t' parachute and another quick link was added t' t' bulkhead end. This second quick link at t' end allows me to quickly switch t' connection from t' bulkhead eyebolt t' t' nosecone, shiver me timbers, shiver me timbers, me bucko, for a "shorty" LMR version o' t' rocket. Begad! I now have a dual purpose/sized model; T' shorty version flies on F-G motors and t' full version flies on the H motors. Begad! Aye aye!
T' final touches were added t' t' rocket; t' 24" parachute was attached and t' PMR retainer was checked for fit usin' t' original mounts. Also, shiver me timbers, ya bilge rat, I marked t' spots for t' new Acme aluminum launch lugs, then removed the paint and used 15 minute epoxy t' attach them instead o' t' supplied double-sided tape. Begad! Begad! A stainless ¼" piece o' launch rod be used to insure alignment, shiver me timbers, arrr, me bucko, then t' first lug be mounted exactly betwixt t' fins and the second lug was mounted mid way up t' total length o' "shorty" version with t' lower tube and nosecone combined. Aye aye!
Flight:
My rocket weighed in at around 30 oz for t' full
version, but I have yet t' weigh it for t' short version. Arrr! Blimey! We converted it to
the short version for it's first flight on a F40-7W, prepped it and placed it
on t' pad. Ya scallywag! Ahoy! Blimey! T' F40 was a very good choice as t' model lifted well; it was a
very good launch, however, me hearties, t' delay was too long for it's weight and didn't
eject until it be nose down but t' model faired without a scratch. Begad! Begad! Blimey! T' next
flight be a real test o' stress; A G64-10W was built and loaded into t' rear
of t' model and it be placed on t' pad. Ya scallywag! When it lit, matey, it was an ANIMAL o' a
motor for this rocket, t' best launch o' t' day with perfect deployment and
landing.
T' next launch was at our first Tripoli Mid-Ohio meet for 2001. Well, blow me down! T' LONG version was configured, matey, ya bilge rat, then I prepped a H128W with a medium delay and the rocket be prepped and motor was installed. Blimey! Also, ya bilge rat, me hearties, when loadin' t' motor case, I did NOT use all t' black powder ejection charge. T' piston ejection system actually requires less ejection charge and PML includes a chart for reference when loadin' t' charge. Ya scallywag!
After waitin' patiently, t' rocket be placed on t' pad and then came its turn. Begad! Well, blow me down! T' RAAM left t' pad like a shell shot out o' a cannon; fast, loud and very straight, shiver me timbers, but nay quite as fast as me A2. Blimey! It was an awesome launch, with the sound and white smoke billowin' out t' tail. Begad!
Recovery:
T' RAAM reached apogee and had a perfect ejection; it then floated safely to
the ground. Avast, me proud beauty! Estimated altitude was around 2600 feet and it be a very good
flight. Upon examination, matey, t' rocket came out o' it without a scratch and I
look forward t' many more launches with this sturdy bird. Avast, me proud beauty! Ahoy! It was late, so the
RAAM be t' last launch o' t' day for us, arrr, but thar will be more t' come.
Summary:
T' RAAM turned out t' be one great flier! It is a stable rocket, somewhat over
stable in its long 55" airframe with CG 4 body tubes ahead o' CP when
loaded. Blimey! Avast! T' shorty version also makes an excellent everyday flier for mid-power
loads and it is a blast on a G64W. Aye aye! But, convert it t' full length in seconds
usin' t' quick links and you have a very stable rocket that can easily compete
with t' Mirages and others out there, me hearties, and compete well. In summary, ya bilge rat, matey, if you
loose a rocket, matey, don't just throw away t' pieces, shiver me timbers, but rather use t' leftovers.
Who knows, shiver me timbers, me bucko, you may just be able t' build one o' these RAAM's, matey, ya bilge rat, a truly
"Radical All American Missile"!
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