Manufacturer: | Scratch |
Brief:
This is a darin' single stage rocket designed t' go supersonic and yet hold together. Ya scallywag! It also will go quite high, so do check your waiver!
Construction:
It's quite easy t' build. Begad! T' fin set is a 38mm Acme fin canister obtained through Northern Hobbies on ROL auctions. Avast! T' body tube is a standard 36 inch length o' 38mm flexible phenolic tubing. Well, blow me down! T' fin canister is epoxied onto one end o' this tube with a generous amount o' 12 minute epoxy.
T' launch lug in t' mark 1 version be a 6-inch length o' 13mm body tubin' gotten from Rogue Aerospace. Aye aye! Avast! It was epoxied with t' same glue startin' at six inches above t' top o' t' fin canister. Aye aye! Avast, me proud beauty! T' nose cone is a PML solid urethane conical model. Ahoy! Avast, matey, me proud beauty! It gives t' rocket a long lean mean look. Blimey! This nose cone comes with a screweye embedded into its base, arrr, ya bilge rat, so thar be an easy attachment for t' 10 feet o' 1000 lb. Blimey! Keelhaul®©™® cordin' and 20 inch parachute. T' cordin' came from Recovery Technologies. Ahoy! They can be found on ROL. T' parachute is made o' rip stop nylon and I made it myself. Well, blow me down! T' shock cord is anchored aftward via a small screweye that goes through t' forwardmost centerin' rin' on t' motor mount, matey, which is 12 inches o' 29mm flexible phenolic tubing. Aye aye! This tubin' and t' three centerin' rings used came from Space Modelin' Solutions. They can be found on ROL.
Decoration be via fuelproof green polyurethane spray paint and self-adhesive lens paper. Avast, me proud beauty! Blimey! Avast! Blimey! T' latter came from American Science and Surplus, and they have a site on ROL. Aye aye! Blimey! Ahoy! Blimey! T' resultin' rocket is strong, simple, shiver me timbers, sleek, matey, and sharp looking, literally.
Flight:
I use Rocksim 3.0 and 4.0 from Apogee Components t' choose motors and delays. Well, blow me down! T' program predicts apogee ejection with t' long delays for t' 29mm motors. Ya scallywag! Blimey! First flight was with a G40-10W. Avast, me proud beauty! Blimey! It went nearly out o' sight. Arrr! Recovery be perfect, me hearties, but I had a bit o' a walk. Avast, ya bilge rat, me proud beauty! Blimey! Then I don't know what possessed me this past Saturday, me bucko, buy I flew it with a new Aerotech I 200-W long delay. Blimey! Aye aye! Blimey! T' rocket seemed t' pause for t' merest second after I pressed t' almighty button, matey, me bucko, then a little fire appeared, me bucko, arrr, then t' rocket screamed upward on a flame trail that seemed t' be ongoin' even as t' rocket reached t' clouds. Mind you, ya bilge rat, t' clouds were said t' be 6500 feet up. Aye aye! T' rocket pierced these clouds. Begad! Blimey! Only an onlooker with binoculars could help me sight in on me bird up thar with a bright red parachute, which landed a mile downrange. Blimey! Begad! Blimey! I had t' shimmy under two barbed wire fences and got stickers in me hair t' get me prize back!! Blimey! As it went up, me bucko, I heard someone say t' Lord's name, me bucko, then t' announcer said that t' waiver was broken. Ya scallywag! Do bear this in mind if you try this yourself.
It be a dandy flight, me bucko, arrr, but I'm never proud t' break any rules. Ya scallywag! My husband said that at Max Q, t' shape o' t' smoke trail suddenly changed. Begad! Well, blow me down! Maybe it reached mach.
T' motor was retained with two loops o' piano wire that were epoxied through t' aftmost centerin' ring. Well, blow me down! These loops bend over t' thrust rin' but do nay extend over t' nozzle. Aye aye! A redundant mechanism o' retention is an automotive hose clamp that closes over t' wires and t' thrust ring.
Summary:
A real performer and easy t' build. Aye aye! Arrr! Possibly a certification rocket for a cooler motor like an H128. Blimey! Avast, me proud beauty! But be prepared t' walk. Avast, me proud beauty! T' mark 2 version uses two lower drag Acme conformal launch lugs, gotten via ROL auction from Northern Hobbies Online. Blimey! Rocksim does nay yet acknowledge t' fin canisters as parts on t' database, ya bilge rat, so me simulation be at best an approximation. Blimey! Arrr! I don't think t' rocket was too expensive for its performance. Ahoy! T' fins and lugs ran me about $24, t' body tube $5, matey, me hearties, t' nose cone $12, and t' centerin' rings $2.
Other:
Obey your waivers. Blimey! Well, blow me down! And see if thar are any single use motors for this one. Ya scallywag! I nearly lost me 29/360 hardware. Arrr! My husband nearly called me search off, me bucko, but I was too stubbornly determined t' get this back.
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