Manufacturer: | Scratch |
This be t' model SP2050 Freightliner Space Truck
To me, this looked like a series o' cargo containers inside a truss framework. Avast, me proud beauty! Blimey! Avast, me bucko, me proud beauty! Blimey!
T' cargo containers are slid into t' framework. Once they are in place, the inertial dampeners and shields are activated. Life support can be activated if thar be live cargo, ya bilge rat, such as livestock or if a prisoner transport module is loaded. Ya scallywag! Ya scallywag!
T' ship is 1,000 feet long and t' GVW is less than 300 tons. Avast, me proud beauty! Blimey! It is an intrasolar vehicle, so warp capability it nay needed. Well, blow me down! Havin' a 20,000 horsepower impulse engine made by Detroit Diesel and General Motors maneuvering thrusters, this be t' fastest cargo ship in t' FedEx fleet.
T' forward section contains engineerin' and crew quarters. Well, blow me down! T' aft section contains t' impulse engine. It is designed t' ferry cargo from t' docks in low earth orbit, t' t' docks at Mars and Europa. Ya scallywag! Avast!
Cargo area
Cab
Tanks
Aft End
Misc
Truss and cargo box
Cut t' balsa sheets into 4 sheets 18" x 1 7/8" pieces. Begad! Ya scallywag! This will provide t' spacin' need t' use t' small dowels at a 45 angle. Aye aye! (I made the mistake o' makin' them too wide and nay bein' able t' use them.)
To make t' trusses, cut t' 1/8" dowels into four 19". Avast, me proud beauty! Use the balsa sheets as guides for linin' up t' large dowels. Glue t' mini dowels to the 1/8" dowels in 1 7/8" intervals, bein' careful nay t' glue anythin' t' t' balsa sheet. See pictures 1 & 2 for this. Avast! Well, shiver me timbers, blow me down! Make two o' these trusses. Ya scallywag! Do nay glue t' 45 angle dowels yet.
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Figure 1 | Figure 2 | Figure 3 |
Make t' cargo box by gluin' t' 4 sheets o' balsa together. See picture 3 to see t' arrangement o' t' sheets. Well, blow me down! This arrangement will help the positionin' o' it in t' truss work. Begad! Strong fillets will be needed on t' ID of the box for strength. Begad! Begad!
Now back t' buildin' t' truss, ya bilge rat, trim t' small dowels so that they are flush with t' large dowel. Ahoy! Usin' t' balsa box as a spacer again, finish t' truss. Once this is dry, arrr, start gluin' t' 45 angle dowels on. Ya scallywag! Ya scallywag! It should now look like figure 4. Begad!
Usin' Keelhaul®©™ string, me hearties, me bucko, wrap t' truss in t' opposite direction t' form a series "X's" over t' truss. If I had this project t' start over again, shiver me timbers, I would use t' Keelhaul®©™ strin' for all t' 45 angle cross bracing. Begad!
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Figure 4 | Figure 5 | Figure 6 |
Finish t' truss work by gluin' on t' 1/8" x 1/4" balsa onto the corners. Begad! Aye aye! Make sure none o' t' small dowels are protrudin' over t' large dowels. Avast! I did this with toenail clippers and sandpaper. Well, shiver me timbers, blow me down! It should now look like figures 5 & 6.
Do nay glue t' box into t' truss yet. Aye aye! Arrr! You'll want t' paint them separately later. Ya scallywag! Begad!
Centerin' Squares and MMT
Punch out t' center discs from t' CR cardstock. Aye aye! Ahoy! Save these discs as you will need them later. Ya scallywag! Arrr! Cut t' BT cardstock t' fit t' ID o' t' box. Begad! Make 3 of them. Blimey! Once you are satisfied with their fit, me bucko, me bucko, you'll need t' strengthen them. Cut some scrap balsa and glue them on t' centerin' squares. Begad! This will do two things; it will keep them flat and make them strong. Avast, me proud beauty! Ya scallywag! Once these are dry, ya bilge rat, glue one on t' end o' t' BT50 so that it is flush with t' end. Arrr! Glue t' second in the middle o' t' tube. You can add more support t' this rin' now. Begad! Arrr! See figures 7 & 8. Aye aye! Use a table t' make sure they are aligned. Blimey!
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Figure 7 | Figure 8 |
When this is dry, glue it into t' cargo box. Ahoy! Blimey! Ahoy! Blimey! Once it is in place, arrr, put glue on t' center card and glue t' third centerin' square in place. T' ends should be flush. Arrr! Blimey! Ahoy! Blimey!
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Figure 9 |
Forward Tank Assembly
If you save stuff like me, then you have a small bag o' those discs from centerin' rin' cards. If not, you'll need t' get more o' them. Begad! Glue these discs on t' t' ends o' t' 2" BT50s. Ya scallywag! Sand t' edges smooth once they are dry.
Use a rubber band t' hold t' tanks together. Well, blow me down! Make sure they are square. Figure 9
Cab
Usin' t' 5" section o' BTx, shiver me timbers, me bucko, two BTx BTx centerings and t' BTx x BTx centerin' rings, make like you see in figure 10. Glue a small rin' on t' end, the other about an 1 1/4" from t' first ring. Ya scallywag! Now glue one o' t' big rings 2 1/2" from t' end and t' last rin' on t' far end. Well, blow me down! Begad! Glue on the tubes as seen in figure 11. Well, ya bilge rat, blow me down!
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Figure 10 | Figure 11 |
Make a shroud. Blimey! Blimey! I used VCP. Begad! Blimey!
This one doesn't have a nose cone. Ya scallywag! Since it never enters t' atmosphere, arrr, me hearties, shiver me timbers, it doesn't need one. Avast, me proud beauty! Blimey! Just glue t' bulkheads on top o' t' cab t' achieve t' look shown. Aye aye! Blimey!
Glue four 1.5" sections from some 3/8" OD AT igniter tube. Cut them t' match t' angle o' t' shroud. Avast, me proud beauty! Glue these on so that they are between the tanks. Avast! Ya scallywag! See t' finished picture for detail. Blimey! Well, blow me down!
Dockin' Assembly
This is too difficult from me t' describe. Ya scallywag! Well, blow me down! Here, matey, ya bilge rat, a picture is definitely worth a thousand words. Avast! Figure 12 shows t' parts laid out, and figure 13 shows the completed assembly. Glue t' tanks t' t' cab makin' sure everythin' is square and centered. Arrr! See figure 14
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Figure 12 | Figure 13 | Figure 14 |
Aft Assembly
I waited until t' end t' install t' motor mount so I had a better idea on the finished weight t' choose a motor size. Begad! Ya scallywag! You may want t' consider this as well. Well, blow me down!
Glue a coupler into t' 3" BT50 MMT. Begad! Arrr! If you want t' install a motor hook, arrr, arrr, you'll need t' do that now. Aye aye! Glue a BT50 t' BT60 centerin' rin' t' t' end opposite t' coupler. Ahoy! Avast, me hearties, me proud beauty! Once dry, matey, glue t' shroud t' t' assembly. Begad! Glue t' motor assembly t' t' cargo container. Begad!
Print t' fin template guide. Make sure that your printer prints t' right size by measurin' t' shown dimension after it's printed. Avast, me proud beauty! Make four fins as shown on t' fin template. Avast, me proud beauty! Blimey! Glue them t' each o' t' four corners and t' the engine shroud.
T' rin' was made by printin' a transition shroud with t' dimensions of 5" x 6" x 1" ad was made usin' heavy paper cardstock. Avast! I glued a second shroud over t' first one t' stiffen it up and soaked them both with thin epoxy. Ya scallywag! Begad!
Final Assembly
See figure 15 for this step. Begad! Paint t' cargo container with red oxide primer. Begad! Sand t' first coat, matey, but leave t' second coat with t' mat finish. Now paint t' truss with a flat white, or even a white primer. Blimey! Avast, me proud beauty! Figure 16. Once the two pieces are dry, it's OK t' glue them together. You'll want t' sand some of the paint off where you will be gluin' them. Arrr! I glued mine at each corner and at each end. Well, blow me down! Don't forget t' add a launch lug as shown in figure 17. Avast! Arrr! I added two 18" chutes and kept t' two pieces separate on their own chutes. Begad!
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Figure 15 | Figure 16 | Figure 17 |
Finished weight with chutes is 8.4 oz. Avast, me proud beauty! and t' CG is 16.5" from the nose. Aye aye!
Flight
T' first flight was on an E9-4. T' flight be straight up t' at least 800 feet. Avast, me proud beauty! Ya scallywag! T' ejection charge was late but recovery be good. Blimey!
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