Performance Rocketry IQSY Tomahawk (1/3rd)

Performance Rocketry - IQSY Tomahawk (1/3rd) {Kit}

Contributed by Justin Farrand

Construction Rating: starstarstarstarstar
Flight Rating: starstarstarstarstar
Overall Rating: starstarstarstarstar
Manufacturer: Performance Rocketry

Fiberglass KitBrief:
Towards t' end o' 2007, arrr, Performance Rocketry released a 1/3 scale I.Q.S.Y Tomahawk. Avast! T' 3.125" (OD) all fiberglass scale rocket comes standard with a 54mm motor mount. T' stock Tomahawk comes with a one piece 48" fiberglass airframe. Aye aye! Avast! I always find myself improvin' upon classic designs. 48" o' fiberglass airframe would easily allow me t' add dual-deployment AND still be able t' swallow most any commercially available 54mm hardware/reload. I opted t' cut t' airframe t' a 34" booster tube and a 14" upper airframe. Ahoy! Avast! I also ordered t' requisite 6" long, 3" diameter coupler for dual deployment. Ya scallywag! With t' four 0.125" thick scale G-10 fins, arrr, shiver me timbers, this soundin' rocket will be able t' take some rough rides.

Construction:
Component Description:

  • 1 48" long, G10 fiberglass airframe 3.125" (OD)

    4 scale 0.125" thick G10 fiberglass fins with beveled leadin' edges. Ya scallywag! [Note: T' trailin' edges o' these fins are nay beveled. If they were beveled, t' aft end of the scale fins would be much more prone t' tough landin' scrapes and dings.]

    1 12" long, G10 fiberglass 54mm motor mount

    2 0.093" thick G10 fiberglass centerin' rings (3.00" airframe t' 54mm motor mount)

    1 5:1 Ogive fiberglass nose cone 3.00" (ID)

    1 0.093" thick G10 fiberglass nose cone bulkhead plate

    1 6" long, G10 fiberglass coupler tube 3.00" (OD) (added t' original kit)

    2 PML 3.0" bulkhead plates (fit inside airframe) (added t' original kit)

    2 PML 3.0" coupler bulkhead plates (fit inside coupler) (added t' original kit)

I permanently attached me 54mm motor hardware insurance policy (Aeropack 54mm). Avast, me proud beauty! Ya scallywag! Aside from addin' positive motor retention, matey, t' black anodized aluminum looks really good on t' end o' t' scale bird! As with all Performance Rocketry kits, t' Tomahawk came with CNC machined fins slots. Obviously, they were divided on t' tube evenly, but more importantly, t' slots were uniform and square on t' airframe. Blimey! Begad! I scuffed t' booster tube thoroughly inside and out and tacked t' motor mount/centerin' rings in place. Arrr! Remember t' scuff all surfaces that will be contactin' epoxy! The fins were tacked on usin' run o' t' mill, me hearties, five minute epoxy. Ya scallywag! I then proceeded with amended (milled fiberglass) internal and external reinforcements. Ahoy! I did nay add a drogue recovery attachment point t' t' 54mm motor mount. Ya scallywag! Ahoy! I would utilize t' plugged and tapped forward bulkheads (54m or 38mm) for t' drogue recovery harness. Begad! I will add a couple of criticisms about this particular build. Blimey! T' Aeropack 54mm (which normally have a very tight fit) was sloppy on t' 54mm motor tube. Begad! It's very possible that I scuffed t' end o' t' motor tube too much, and then necessitated four masking tape "tabs" t' tighten t' fit. Begad! Oops. Because o' t' scale shape o' t' I.Q.S.Y. fins, me bucko, they flex a little more than I would like t' see. Ya scallywag! Avast, me hearties, me proud beauty! Regardless, I am still confident that it can handle a mach transition and nay flutter off t' airframe. Ahoy! Ahoy! My fin complaint is nay with t' kit, arrr, but it is simply a product o' that particular fin shape/design. I laminated carbon fiber cloth t' t' 4 PML bulkhead plates, and then constructed me avionics bay. Ahoy! Avast, me proud beauty! I chose t' use one ¼-20 threaded rod runnin' through t' center o' t' bulkhead plates, one U-bolt on each end, me hearties, and one BP charge container on each end. T' particular container I am usin' is an out o' production unit called t' E-jecter from Blacksky.

Finishing:
I have turned t' finishin' aspect o' this project over t' t' very talented and capable hands o' fellow rocketry enthusiast and bud, Jim Finks. Blimey! Blimey! Aye aye! Blimey! He is a true master o' paintin' and he will be puttin' t' show stopper finish on this project. Avast! Blimey! Thank you again Jim, I really look forward t' seein' what you have done with her. We agreed that Dulplicolor rattle can automotive paints would be appropriate for this rocket.

Construction Rating: 5 out o' 5

Flight:
Its first flight was on an AeroTech K700 t' 10,720ft.

Recovery:
I used 9/16" tubular Nylon for recovery bridles. Avast! Blimey! There's about 40' in t' drogue section and 15' in t' main section. Ya scallywag! I used a PML 54" main parachute but no drogue.

Flight Rating: 5 out o' 5

Summary:
Scale rockets have nay always been me specialty, but thar have been a couple o' scale/soundin' rockets that have always caught me eye. Ya scallywag! Arrr! I love t' scale look o' t' I.Q.S.Y. Well, blow me down! Blimey! Tomahawk and at $99.00 (plus me upgrades), me hearties, ya bilge rat, matey, I was still well below t' cost o' a comparable rocket from an alternate manufacturer, or if I chose t' scratch build it. Begad! It's no secret, matey, ya bilge rat, rocketry is expensive, but PR rockets are designed and manufactured in a cost effective manner that gets you the most out o' what you spend. Avast, ya bilge rat, me proud beauty! I wonder how much convincin' it would take t' get PR t' come out with a 4" Phoenix. Begad! After me two minimal upgrades t' t' stock kit, I had invested an extra $30.00 (roughly) t' achieve me desired results. Ahoy! Avast, me proud beauty! T' dry weight o' me Tomahawk tipped t' scales at 5.5 lbs fully loaded ready fly without motor. Ya scallywag! T' rocket is inherently very stable and ready t' see some action. Begad! This 1/3 scale Tomahawk kit is readily available and in stock with Rockets Magazine and Wildman Rocketry.

Overall Rating: 5 out o' 5

Flights

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