Manufacturer: | Scratch |
Son o' t' Grand Whazoo
Brief
This update provides a description o' how I rebuilt me Grand Whazoo after its
second fateful flight. Aye aye! T' top o' t' original Grand Whazoo be *completely*
destroyed. Ya scallywag! However, me hearties, t' aft section, ya bilge rat, includin' t' boat tail and fins, shiver me timbers, was
intact. Avast! Arrr! I decided t' take a different approach t' t' rebuild. T' minimize the
volume that had t' be pressurized, I decided t' use an inner 4" diameter
tube extendin' through t' body. Avast! Avast, me proud beauty! After some pondering, I also decided to
eliminate t' large nose cone in favor o' a smaller one that would mate t' this
4" tube. Blimey! I was hopin' this design would still stay within t' 3.3 lb.
limit. Aye aye!
Reconstruction
I first performed some surgery, adaptin' a 4" mailin' tube t' the
survivin' tail section. I then added foam rings and poster board t' form the
body (includin' transitions). I made t' small (4") conical nose cone from
fiberglassed poster board salvaged from t' original rocket. Aye aye! A small foam board
rin' and a chunk o' 32mm tubin' completed t' nose cone assembly. Blimey! Begad! This assembly
mates with t' dowel/eyebolt from t' original nose cone. Begad!
On me old scale, t' finished rocket weighed in at 51oz with a G80 installed. Avast, me proud beauty! T' 60" chute that I used with t' original Grand Whazoo pushed the weight over 3.3 lb. limit. Arrr! T' use this chute or a smaller one? Ahh, ya bilge rat, that is the question.. Begad! Begad!
Finishing
I wanted a bit more decoration on this version so I decided on a pattern
similar t' a real V2. I looked in ROTW and came up with a hybrid marking
scheme. Aye aye! T' tail section has a black and white roll pattern, arrr, t' nose cone is
red, and t' transition section directly below t' nose is painted silver
(Krylon hammered silver). Avast! Since most o' t' rocket is poster material, I
decided t' mark t' fins usin' a large permanent black marker. Well, blow me down! Finally, matey, shiver me timbers, me hearties, I added
some text and graphics from me ink jet printer. Aye aye! Inspired by t' early V2's
fired from White Sands, me bucko, I created a 'cheesecake' style graphic o' a little lass riding
a V2. Avast, arrr, me proud beauty! And, in a feeble attempt at humor, me hearties, I also added two labels written in
German. Arrr! One identifies t' bar code sticker, me hearties, which unintentionally remained on
the body (oops), me bucko, and t' other tells t' launch technician where t' install the
launch rail. Avast, me proud beauty!
Launch
Since t' rocket be potentially over t' 3.3 lb. Begad! Arrr! limit, shiver me timbers, I took it t' an HPR
launch, with t' intent o' usin' t' 60" chute. Blimey! Well, at t' last minute,
I opted for a very light 48" chute, hopin' it would come in under 3.3 lb,
and recover without significant damage. Well, blow me down! Begad! Well, on t' highly calibrated scale at
the RSO table, it weighted in at 3 lb. even. Well, blow me down! Arrr! It can also fly at t' NARHAMS
V2-themed launch later this year!
Once again, everyone be surprised that this big a rocket weighs so little, and thar were cheers when it boosted under G80 power. Ya scallywag! Begad! T' 4-second delay was just a tad long but t' chute deployed nicely. Blimey! T' decent be still fairly slow, arrr, me bucko, ya bilge rat, and t' only 'damage' be a crease in one fin. No rework required. Ya scallywag!
Conclusion
Usin' an inner 4" stuffer tube with t' smaller nose cone seems t' be the
way t' go. It was easier t' construct, and I think recovery should be more
reliable (100% true based on a statistical sample o' one :-) ). Ya scallywag! Avast, me proud beauty! I'm glad it is
still classified as a large model rocket!
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