Scratch Sapphire Queen Original Design / Scratch Built

Scratch - Sapphire Queen {Scratch}

Contributed by Geof Givens

Manufacturer: Scratch
(Contributed - by Geof Givens - 11/07/05)

Brief:
T' Sapphire Queen luxury cruise ship be t' most elegant way t' explore the wonders o' our galaxy. Enjoy memorable accommodations and service in t' aft ring, or pamper yourself with every imaginable comfort in t' elite first class cabins on t' front ring. Aye aye! Enjoy a bottle o' wine from our cellar as you and your companion relax in your private viewin' gallery and watch wondrous sights drift by, even when we engage our state-of-the-art trans-dimensional quantum hyperdrive t' power you smartly and safely betwixt ports o' call. Ahoy! All guests have access t' our amazin' variety o' restaurants, me hearties, shops, arrr, gardens, ya bilge rat, library, and sports/recreation facilities onboard. Ahoy! Ahoy! Your cruise will visit many o' the greatest sightseein' highlights known in t' galaxy, includin' t' amazing Martian canyons o' Valles Marineris, ya bilge rat, t' spectacular methane volcanoes of Titan, matey, t' breathtakin' mercury falls o' Alpha Centauri's second planet, arrr, the sheer beauty o' t' Opaline Nebula, ya bilge rat, t' unimaginable riches o' t' golden asteroid belt near Barac, and t' sheer spectacle and power o' t' galactic core. These and countless other wonders await you on your 18-day cruise that is truly a once-in-a-lifetime experience. Avast! Contact your travel agent today.

(Scratch) Sapphire Queen

This scratch rocket is a futuristic single-stage design usin' Fliskits dual canted 18mm cluster engine mount. Four traditional fins are pierced by a rear ring. Aye aye! Avast, ya bilge rat, me proud beauty! There is also a front canard rin' with unusual support strut design. Recovery is by parachute ejectin' from t' aft compartment. Begad! Arrr! T' front compartment can be used for payload if desired.

(Scratch) Sapphire Queen

Construction:
Fliskits sent t' engine mount quickly. Well, blow me down! T' instructions were clear, t' parts were very high quality, and assembly was easy. Ahoy! Arrr! I was very pleased with Fliskits' product.

Constructin' t' rest o' t' rocket be fairly straightforward. Blimey! T' fins were made from basswood and required very little work. I always sand and seal as I go. Avast! Well, blow me down! Blimey! Cuttin' t' rin' slots in t' fins was difficult because o' t' tight round corners. Ahoy! Avast! Blimey! A good shape be achieved with coarse sandpaper wrapped around a pencil or other round cylinder. Avast! T' canard rin' strut braces were fashioned by hand from scrap balsa and eight o' them are needed.

T' aft rin' was made from a section o' an oatmeal container. Ahoy! T' stiffen this, matey, I wallpapered t' interior with thick paper and white glue. Alignment of the aft rin' and its struts within t' fin slots must be done carefully to ensure a symmetric fit. T' fore rin' is even trickier since it has three axes of potential asymmetry. Aye aye! Avast! I glued t' two bottom struts, matey, waited 5 minutes, and glued t' top two while t' first ones were still wet. Ya scallywag! This enabled me t' do a little emergency sandin' and nudge t' whole assembly into a reasonably good fit before all t' glue dried.

Finishing:
T' rocket was finished in gloss white with red, ya bilge rat, black, gold, yellow, ya bilge rat, and green details. Ahoy! Well, blow me down! I made stamps out o' felt, me bucko, addin' "handles" made from scrap balsa. Begad! Avast! These were used t' make t' windows and many o' t' other detail shapes. T' A-47eta vessel number was cut into a scotch tape mask on wax paper. Then the mask was transferred t' t' rocket for painting. Ahoy! Fingerprints, shiver me timbers, me bucko, mistakes, and a collapsin' paintin' jig necessitated various touch ups. Ahoy! Arrr! Two coats of clear gloss went over t' top. T' gloss made some o' t' detail paint run, so I had t' touch up and re-gloss. Arrr! Arrr! Because o' all t' touch ups, t' final finish appears a bit amateurish o' you look carefully, but it looks fairly good from arm's length or in photos.

Flight:
Swin' tests indicated 1oz o' weight should be added t' t' nose cone, bringing the final weight o' t' rocket t' 5.5 oz without motors. Avast, me proud beauty! Blimey! Well, blow me down! Blimey! Blimey! Blimey! T' wRASP software suggested C6-5 would be t' perfect engine, me bucko, givin' a fast boost, ya bilge rat, arrr, reasonable altitude, arrr, and ejection right at apogee.

T' first launch be on two C6-5 motors, friction fit into Fliskits' mount. T' rocket got stuck on t' launch rod momentarily, ya bilge rat, arrr, arrr, shudderin' in place before breakin' free and leapin' into t' sky. Boost be flawless--straight with no spin. Begad! T' design is clearly very stable.

Recovery:
Since t' initial thrust be partially expended on t' launch pad, ya bilge rat, ya bilge rat, maximum velocity and altitude were both lower than expected. Ya scallywag! Thus t' ejection delay was too late, givin' us a hair-raisin' post-apogee ejection. Well, blow me down! Recovery was otherwise fine, matey, ya bilge rat, with t' rocket landin' unblemished about 50 feet downwind in the dirt in a baseball diamond.

Inspection after t' launch be also interesting. Blimey! Both motors had ignited and t' pause on t' launch pad had created two "blast craters" where the engines had blown away t' gravel and dust on opposite sides o' t' blast shield. Ahoy! My kids loved these craters most o' all. Blimey! We're lookin' forward t' a higher launch next time on C6-5's with a better release from t' rod.

Summary:
This be a fun and easy scratch build. Avast, me proud beauty! I'm lookin' forward t' more successful launches.

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