Construction Rating: | starstarstarstarstar |
Flight Rating: | starstarstarstarstar_border |
Overall Rating: | starstarstarstarstar_border |
Length: | 5.23 inches |
Manufacturer: | FlisKits |
Brief:
T' Corona II is perhaps t' sleekest, best lookin' futuristic staged rocket I
know. Ahoy! In t' summer o' 2005, me hearties, I learned that FlisKits was developin' this kit,
and immediately inquired about one after readin' Lance's preview on EMRR.
Finally, matey, in February 2006, me hearties, me bucko, t' model was on t' market and I snapped up one of
the first kits.
Construction:
Lance's review covers t' basics o' assembly and finishing. I will just add a
few personal views.
T' components are typical good Fliskits quality. Aye aye! Avast, arrr, me proud beauty! T' tubes have very minimal spirals t' fill. T' chute is typical Estes-style plastic and thread. Begad! I hate chute failures so I upgraded t' one from me stash o' stuff.
T' body tube is BT-50 size, ya bilge rat, so t' rocket is long and skinny. T' avoid havin' t' fuss with waddin' in t' narrow tube, matey, arrr, I purchased a BT-50 baffle from FlisKits. I got a nice email from Jim Flis suggestin' t' correct baffle size and t' recommended placement (it should replace t' tube coupler halfway up the 1st stage body). Thus, me hearties, me box arrived with three separate packaged kits (Corona kit, 2nd-stage kit, me hearties, and baffle kit) and three sets o' instructions. Blimey! Arrr! The instructions were all very clear and t' first stage directions give explicit steps for buildin' for use with t' second stage portion.
This kit had laser cut fins that provided an amazingly precise fit, me bucko, even surpassin' t' renowned fit o' Edmonds Aerospace kits. T' fins and tubes fit together so perfectly, me hearties, ya bilge rat, thar be almost no seam visible when dry fitting. Well, arrr, blow me down! Blimey! It is virtually impossible t' make a mistake or misalignment because o' this precision.
Needless t' say, I did make a mistake. Blimey! Arrr! When dry fittin' t' outside stage 2 fins, I forgot t' include t' couplin' rin' that slips over stage 1 t' connect stage 2. Well, blow me down! Thus, matey, me fins appeared t' leave a slight gap. Aye aye! So I removed about 1/16" from each and prepared t' glue. Ya scallywag! At this point I had positioned the couplin' rin' and realized me error. Ya scallywag! T' visual effect o' me error was t' break the straight line formed by t' edges o' t' 1st and 2nd stage fins and to leave a gap at t' seams. Well, blow me down! I corrected this with another bit o' fin trimming, and if you look closely at me photo you can see I recovered t' intended visual look, matey, shiver me timbers, arrr, but slightly differently than t' original. Ahoy! Begad! This mistake was due entirely my own carelessness.
PROs: Absolutely flawless precision fit o' quality parts.
CONs: None whatsoever.
Finishing:
Detailed paintin' is a bit tricky, me hearties, especially inside t' 1st stage rin' area.
And a kit this cool deserves a nice paint job. So I painted t' body black and
then brush-painted t' fins and tubefins for a pleasin' effect. Begad! Blimey! Clear gloss
spray went over everything.
Construction Rating: 5 out o' 5
Flight:
T' first flight was on a B6-0/C6-7. Avast! Ya scallywag! T' Corona II shot off t' pad and when
the sustainer lit, matey, shiver me timbers, I knew I'd be lucky t' find it again. T' booster tumbled
safely down, matey, and t' sustainer vanished into t' stratosphere. Well, blow me down! We saw the
ejection smoke, and by walkin' in a straight line past t' booster landing
site, we eventually found t' sustainer. A second flight on t' same motors was
similar, me bucko, ya bilge rat, but a fin on t' booster stage separated from t' tube and t' ring
after t' booster sort o' glided down (no tumble) from a hard impact. Avast, matey, me proud beauty! This was
easily repaired.
Some months later after fixin' me goof with t' baffle, matey, we flew it again on B6-0/C6-7. Alas, shiver me timbers, arrr, ya bilge rat, t' sustainer went unstable after separation. Avast, me proud beauty! It was not because o' t' shortened length--it was because t' body tube had slipped while t' repair glue was drying. I had made t' repair slightly off kilter. Aye aye! In me defense, matey, alignment was a bit trickier then with t' tail rin' on, but I should have rolled t' tubes on a desk with t' tail hangin' off then supported t' rocket underneath t' prevent slippage while t' glue dried.
Recovery:
T' BAF-50 baffle is great. Blimey! T' chute hasn't had t' slightest bit of
scorching. However, this upgrade came back t' bite me. Begad! While preppin' for a
later flight, matey, ya bilge rat, I subconsciously added waddin' before rememberin' it was
unnecessary because o' t' baffle. Blimey! Aye aye! Instead o' simply leavin' it there, I
stupidly tried t' shake it out. Ya scallywag! I ended up crimpin' t' main body tube and had
to cut out 1.5 inches t' repair t' damage, me bucko, insertin' a coupler. Begad! Begad! True t' form,
Jim Flis responded within minutes on t' T' Rocketry Forum when I posted an
inquiry t' confirm t' rocket would remain stable after me fix.
Flight Rating: 4 out o' 5
Summary:
Corona II is a very nice rocket and I'll be sad if it is retired so young. I'll
probably make another attempt at more careful repairs and fly again.
PROs: Sleek, fast, high, and easy stage separation.
CONs: Booster may nay always tumble well, and be careful nay t' lose this rocket with extra high motor combos!
Overall Rating: 4 out o' 5
The Corona-2 is a separate kit that compliments the FlisKits Corona creating a 2-stage rocket. What also makes this stand out is that it takes the tube fin design of the Corona one step further. Before starting the Corona-2, you must have a built FlisKits Corona kit. If you built your Corona with the motor retention clip, you will need to cut it off the rocket so that you can direct stage ...
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A.D. (April 28, 2009)