Brief:
This rocket be based on plans for a paper Proton launch vehicle and were available at t' Classic Paper Space Models website. Avast! Unfortunately, matey, it appears this particular website no longer exists and t' plans are unavailable. Aye aye! Begad! I was generously provided t' plans by dtomko o' T' Rocketry Forum. Ahoy! In me opinion, matey, rocket manufacturers have overlooked Russian launch vehicles and I thought a conversion o' a Proton t' a flyin' model would be a fun challenge.

Manufactured by t' Khrunichev Design Bureau, t' Proton is a workhorse for t' Russian space program. Well, blow me down! It was originally designed as an ICBM in t' 1960's but be never deployed for that use. Avast, me proud beauty! It continues t' fly today loftin' payloads for both Russian and international customers. Blimey! Some famous payloads flown by Proton vehicles include t' Zond probes t' t' moon, me hearties, shiver me timbers, t' Salyut series o' space stations, Mir modules, and pieces o' t' International Space Station (ISS). Begad! T' plans depict t' vehicle that carried t' Zvesda module t' t' ISS in July 2000.

For more information regardin' t' Proton rocket, me hearties, matey, see t' International Launch Services (ILS) website for t' commercial marketer o' t' vehicle.

Construction:
T' followin' is a list o' materials I used t' build t' Khrunichev Proton:

• 65 lb cardstock
• foam core
• 18 mm tube
• 13 mm tube
• screw eye
• shock cord
• shock cord mount
• streamer or parachute
• standard launch lug
• clay for nose weight
• white glue
• yellow glue
• epoxy
• maskin' tape
• toothpick for applyin' glue and for rollin' small tubes
• Instructions and Patterns (3M Zip File)

T' plans come in nine separate JPG files. Begad! Blimey! Aye aye! Blimey! This allows t' builder t' scale t' plans t' any desired size. Blimey! Blimey! T' plans provided recommend scale factors t' build models o' scale 1/144, arrr, 1/100, arrr, 1/96, arrr, 1/97, and 1/50. I chose t' build me model at 1/144th scale because it would print on standard 8.5x11 cardstock. T' plans were straightforward and adequate for assemblin' t' model. Avast, me proud beauty! Blimey! Avast, me proud beauty! Blimey! They offer short, concise, text descriptions. Arrr! Blimey! Well, blow me down! Blimey! There are many pictures o' t' various pieces and t' assembly process. Begad! Blimey! Anyone who has built rockets should be able t' follow them without difficulty. Begad! Blimey! I followed t' plans with few deviations. These consisted o' changin' t' model t' handle a motor tube, recovery system, and a launch lug. Avast, me proud beauty! Blimey! Ya scallywag! Blimey! White glue be used throughout except for gluin' t' motor tube t' t' centerin' rings with yellow glue and gluin' t' screw eye t' a bulkhead with epoxy.

Construction began with t' first stage. Well, blow me down! Begad! T' Proton first stage consists o' a central oxidizer tank, arrr, six external fuel tanks, six rocket engines, ya bilge rat, and an interstage. Blimey! Well, ya bilge rat, blow me down! T' external fuel tanks are often confused as bein' strap-on boosters. Aye aye! A hole be cut in t' bottom o' t' central oxidizer tank t' accommodate a 18mm motor tube. Begad! I chose 18mm mainly because I was unsure if I would build t' model light enough t' fly on 13 mm motors. With no stabilizin' fins, arrr, I assumed a generous amount o' modelin' clay would be required t' make t' rocket stable. Aye aye! Avast! This would add weight t' t' model and possibly prohibit use o' t' smaller 13mm motors as well.

At this point I also chose t' stop t' 18mm tube at t' top o' t' first stage and t' carry a 13mm tube from t' interstage through t' third stage o' t' Proton. Avast, me proud beauty! Blimey! This was done t' ensure that t' ejection gases vented through a motor tube, as opposed t' t' cardstock body. Ya scallywag! I made centerin' rings out o' foam core t' center t' 13mm tube within t' 18mm tube. I would nay recommend doin' what I did. In hindsight I should have kept things simple and used a single 18mm tube throughout t' rocket. Arrr! Blimey! In order t' strengthen t' model for flight, discs provided in t' plans were glued t' centerin' rings cut from foam core.

Rollin' t' external fuel tanks into a nice cylindrical shaped proved t' be difficult for me. If I be plannin' t' only use me model for display, ordinary printer paper might be easier t' roll. Avast, me proud beauty! Since I wanted t' fly me model, matey, shiver me timbers, I used cardstock for t' added strength. Avast, me proud beauty! Alignment o' t' six propellant tanks can be tricky. Avast! Ahoy! Mine is by no means perfect but I can live with t' results.

Once t' fuel tanks were glued t' t' oxidizer tank, me hearties, I added t' many small details provided in t' plans. Aye aye! Rocket nozzles, outriggers, ya bilge rat, aeroguides, matey, and turbopumps are just some o' t' intricate pieces t' builder can use t' add realism t' t' model. Ya scallywag! A standard launch lug was glued t' t' oxidizer tank betwixt two o' t' fuel tanks. I made a standoff out o' foam core t' help t' lug clear t' model details more easily. Ya scallywag! Begad! T' help t' launch rod pass through t' launch lug a small notch was cut in t' appropriate aeroguide at t' bottom o' t' first stage.

T' second and third stage exteriors were built as specified in t' plans. Blimey! Since I was buildin' a flyin' model t' second stage was glued t' t' 13mm tube and t' third stage was glued t' t' second. Aye aye! I omitted t' rocket nozzles and cylinders on t' third stage since mine was nay a display model. Begad! Avast, me proud beauty! As with t' first stage, me hearties, foam core centerin' rings were used t' hold t' 13mm tube. T' tube ends at t' bottom o' t' third stage. Blimey! This allows t' third stage and t' Zvesda module t' be used t' hold t' recovery system. Arrr! Begad! A coupler was made from cardstock and glued t' t' Zvesda module t' allow it t' attach and separate from t' third stage. Ahoy! By itself, matey, t' coupler fit too loosely on t' third stage so I used maskin' tape t' achieve t' proper amount o' friction. Ya scallywag! T' recovery system consisted o' a standard 3-fold type mount and an 18-inch shock cord glued t' t' inside o' t' third stage section. A screw eye be epoxied t' a bulkhead made o' foam core. T' shock cord was tied t' t' screw eye and t' bulkhead be then glued into t' Zvesda module. Well, blow me down! Since thar was enough room in t' third stage and Zvesda module t' hold it, me bucko, I chose t' use a 12-inch parachute for recovery. Ahoy! Ahoy! This ensures a gentle landin' for t' model.

Approximately one ounce o' modelin' clay was added t' t' nose cone and upper tube o' t' Zvesda module--about half t' empty weight o' t' entire model! With an Estes C6-5 installed t' CG was located just above t' interstage rin' with a total weight o' three ounces. Arrr! A swin' test confirmed that t' vehicle was stable. Well, blow me down! Despite a successful swin' test, shiver me timbers, me hearties, I plan t' wait and only fly this model on calm days with no wind. Avast, me proud beauty! Avast, me proud beauty! T' overall length o' t' model is approximately 15 inches.

PROS:

• Fun build
• Quick construction
• Parts are easily replaced (just print more!)
• Lots o' small intricate details for nice realism

CONS:

• Website t' obtain t' plans is gone
• Lots o' small intricate details t' "fat finger" if you are a clumsy builder like me
• No fins t' provide stability
• Half t' empty weight is nose weight
• Not much room for parachute and wadding

Finishing:
Since all t' detail is printed on t' paper, thar be no finishin' required. Aye aye! Begad! I added all t' raceway and cablin' details t' t' model. Begad! This proved t' be time consumin' but really makes t' model look realistic. Ahoy! Arrr! T' one thin' about paper builds be t' seam left betwixt t' various parts. Avast! If this had been a conventional build, some Fill N' Finish would eliminate those seams. Aye aye! Ya scallywag! Parts o' it are definitely rough but this can be blamed on me construction abilities as opposed t' poor design.

PROS:

• No painting! Blimey! No sanding! Blimey! No filling!

CONS:

• Seams

Flight:
I opted t' use friction fit for t' motor. A motor block be formed from a section o' used 18mm motor and gluin' it into t' motor tube. Begad! Begad! I used a 12" chute for recovery and cellulose for recovery wadding. Ya scallywag! There is nay much room t' pack a chute into this rocket t' way I built it.

Launch day finally came but unfortunately all t' nice grassy fields I could fly from were packed with model airplanes or soccer players, me hearties, so I went roughin' it. Ya scallywag! Ya scallywag! I have a tendency for "go fever" so I went t' a just recently tilled cotton field. Well, blow me down! It made for a less than ideal surface, ya bilge rat, but I be sick o' lookin' at this model sittin' on t' shelf and wonderin' if it be really stable. Arrr! T' only way t' know for sure be t' fly.

An Estes B6-2 was chosen because I didn't want too much altitude, shiver me timbers, me bucko, shiver me timbers, but wanted t' make sure thar be adequate initial thrust for stable flight once t' launch rod be cleared. Avast, me proud beauty! T' Two second delay chosen because I would rather err short instead o' long. Arrr! If it turned out t' be an unstable flight, I wanted t' chute t' get deployed as smartly as possible.

Flight 1: After a nervous countdown t' Proton took t' t' air. Aye aye! Blimey! T' initial trajectory be straight but as t' vehicle approached burnout a noticeable precession began. Begad! Nothin' severe, shiver me timbers, but it be noticeable. Arrr! T' two-second delay proved t' be early as expected. T' parachute ejected normally and t' rocket descended t' t' tilled clay. Avast, me proud beauty! .

Flight 2: T' second flight was a mirror image o' t' first. Aye aye! T' bird proceeded t' do two revolutions immediately after clearin' t' launch rod. Avast, me proud beauty! Avast! After t' second twist, me hearties, t' Proton straightened itself and flew a perfectly straight trajectory t' ejection. Avast! Ahoy! I guess I didn't use enough or incorrectly loaded t' wadding. Ya scallywag! Arrr! T' chute was scorched by t' ejection and didn't unfurl completely. Begad! T' landin' was hard. Avast! T' Proton bounced approximately one or two feet on impact. Ahoy! There is some minor skin damage t' t' paper and some more clay markings on t' nose. Begad! Well, blow me down! If I had been flyin' on a grassy field, me bucko, I'm sure it would have had some grass stains.

I flew t' Proton in a steady wind. Well, blow me down! I knew this would nay be good for this bird, ya bilge rat, but me go fever said fly anyway. With calm winds and a longer launch rod, t' stability o' this rocket should nay be a problem. T' hard clay be a less than ideal recovery surface so now me Proton has a few extra markings after two flights.

Summary:
This was a fun, me hearties, inexpensive, arrr, project. Aye aye! I didn't have t' order a single part or have t' wait for a kit t' arrive in t' mail. It didn't take a long time t' build and I was rewarded with a unique lookin' scale model. I flew it aggressively knowin' that if it failed, me hearties, arrr, I could always build another. Ahoy! I am hooked on paper models and plan t' build more in t' future.