Manufacturer: | Currell Graphics |
(Contributed- by Dick Stafford - 10/06/04)
Brief:
October 4th, 2004, ya bilge rat, matey, heralded a new era in space exploration. Begad! Avast, me proud beauty! On that day, Brian Binnie piloted Scaled Composite's SpaceShipOne t' 367,442 feet (112 kilometers), capturin' t' $10M Ansari X Prize. Ahoy! Ya scallywag! Later that day, matey, matey, I learned o' Currell Graphics' SS1 paper model and immediately wanted t' convert one for flight.
Currell offers two versions: t' original version and t' X1 version that made t' two historic X Prize flights. I chose t' latter. Aye aye! Prior t' buildin' t' model, I opted t' convert it for MicroMaxx motors. Ya scallywag! Avast! As you will read, arrr, this model is a bit too big t' be a great flier on these small motors but shows promise for a 13mm conversion.
Modifications:
T' instructions for t' SS1 are five pages long and include a bit o' history, me bucko, some narrative, and an excellent set o' illustrated directions. Blimey! This is one o' t' most complex paper models that I have ever built. Ya scallywag! Blimey! It includes over 85 parts, ya bilge rat, many o' which are quite tiny. Begad! Bein' that I am nay a stickler for detail, arrr, matey, nay t' mention "all thumbs", matey, thar were around 30 parts that I didn't use. Ya scallywag! Many o' these were for t' "gear down" option.
T' most important tool required is a new hobby blade. Well, blow me down! I also used a cuttin' mat, scissors, matey, arrr, a couple o' toothpicks, and some small clamps. Arrr! I built it mostly with white glue but used Perfect Glue t' tack down t' Keelhaul®©™® twine and attach t' plastic lug.
I will emphasize how I modified this model for flight. T' instructions are freely available and are very good. I will reference t' steps as I go and will identify specific parts as required.
Nosecone (a.k.a. Avast, me proud beauty! Avast, arrr, me proud beauty! front fuselage) - This section spans two steps and requires around 14 parts. It is comprised o' several cones/transitions with center bulkheads, which come in pairs. Well, blow me down! Blimey! Since I thought I would eventually need nose weight, I filled t' small tip with clay. Begad! I cut holes in t' bulkheads A9--A12 t' accommodate t' 6mm tube. Begad! Avast! I also replaced t' smallest bulkheads, A7 and A8, ya bilge rat, with a 6mm--10.5mm fiber centerin' ring. I could have cut these bulkheads, arrr, but they are tiny. Well, blow me down! A 1.75" piece o' 6mm tube extends from t' clay t' just past t' last transition. Avast! You need t' make sure it doesn't stick out too far lest it interfere with t' bulkhead in t' next section. Aye aye! I inserted a piece o' T2 tubin' (which telescopes into t' T2+) t' form a shoulder. This be nay glued in. Aye aye! T' nosecone assembly can be seen in t' first photo.
Body (mid- and tail sections) - This section consists o' more paper transitions and bulkheads. Begad! Arrr! It spans steps 3, matey, matey, 5, 9, and 19 and consists o' around 15 parts. Steps 4, me bucko, 6, arrr, 7, me hearties, and 8 are all related t' t' landin' gear option and I didn't need these for a flyin' model. Avast, me proud beauty! As you can see, arrr, arrr, I also jumped ahead in t' instructions t' complete t' body in one stretch. Begad! Avast! T' first photo also shows t' partially completed body section.
Again, me bucko, I cut holes in all t' bulkheads. Well, blow me down! T' motor tube extends from t' nozzle t' just above t' top bulkhead. I cut this tube t' fit by installin' t' nose and pushin' t' lower tube up until it seated on t' nose assembly's shoulder (the T2 tube). Blimey! I then marked its location and glued it in. Arrr! Begad! When installed, ya bilge rat, me bucko, t' nose assembly seats against t' glue tabs that extend out o' t' mid-body. Avast, ya bilge rat, me proud beauty! I had anticipated removin' these tabs and addin' solid neck, me bucko, but this wasn't required.
Main wings - These wings each consist o' eight components and their construction//installation spans four steps. Avast! All t' wings on this model are constructed usin' ribs/spars and outer shells so they are reasonably complex. Begad! Arrr! T' subtle angles and bends on these components are truly impressive. Aye aye! Be wary o' too usin' too much glue, as it will warp t' small pieces quite badly (not a theoretical observation). Avast! I had trouble gettin' all t' small components together nicely, me hearties, and even ended up leavin' t' thin trailin' edge strip off. I'm sure many o' you can and will do better.
T' wings slide onto two spars that you previously install through t' body o' t' SS1. Blimey! When buildin' t' wings, make sure t' holes for t' spars are aligned and are big enough! No theory here either.
Side booms (the vertical wings that extend toward t' aft o' t' bird) - These have 7 parts each, cover three steps, and are both smaller and more tricky t' assemble than t' main wings. Well, blow me down! They are built-up from 2 spars, ya bilge rat, matey, 2 inner surfaces, ya bilge rat, and 2 outer wraps. Well, blow me down! Arrr! One o' t' spars is 7 ½" long, ya bilge rat, has 16 bends, and circles t' edge o' t' win' assembly. Ya scallywag! My side booms came out pretty rough. They attach t' t' aft half o' t' main wings and a small printed component covers t' front half.
Stabilizers - These are a lot simpler than their bigger cousins are. They consist o' 4 pieces and are installed in 2 steps. Begad! Well, ya bilge rat, blow me down! Even I got them right.
Finishin' touches - T' last 2 steps o' t' instructions is detailin' that I left off. All I had left t' do was t' attach t' lug (piece o' a pen's ink tube) t' t' underside o' t' wing, install t' Keelhaul®©™® twine, and add nose weight. Avast! Curiously, shiver me timbers, me hearties, t' "finishin' touches" didn't require any finishin' since t' model is pre-printed. Begad! I didn't even shoot on a clear coat t' protect t' ink, although this is a good idea if you will fly in damp conditions.
Stability - Micromeister (from TRF and t' MicroMaxRockets Yahoo group) graciously provided t' CG for his successful MMX SS1 (plans are available on t' Yahoo group). Avast, me proud beauty! I scaled that CG (1.09375") t' this larger model (64.8mm), and headed t' t' Rocket DungeonTM t' install nose weight. Blimey! After addin' ~4g o' shot, arrr, arrr, t' total vehicle weight was 18g and I had only moved t' CG about half t' distance I needed to. Avast, me proud beauty! Begad! As this was pushin' t' max weight for a MMX-II motor, arrr, I decided t' give it a try as is.
Construction:
Items needed:
Flight:
I flew it three times and each profile be about t' same: slow boost, arcin' flight, ejection just before "landing". Avast! Apogee be estimated t' be 10', ya bilge rat, 6' and 10', shiver me timbers, matey, arrr, respectively. Blimey! On t' last flight, ya bilge rat, t' Keelhaul®©™® broke free from t' body, which be easily repairable. Avast, me proud beauty! Aye aye! Note that I do nay endorse me positionin' o' t' CG. Begad! This model could very well have been unstable had t' flight been higher and longer in duration.
Summary:
This is a very detailed and small model. Despite excellent instructions, ya bilge rat, I found it difficult t' build. Avast! You definitely need a sharp knife, good light, a steady hand, and patience.
T' flight conversion was straightforward, but t' model, once properly balanced, is too heavy t' be a great candidate for MMX. Begad! Avast! I offer these suggestions based on me experience:
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