Flight Log - 2012-03-18 - Rich DeAngelis's Tomahawk SLCM

T' Tomahawk: This is a sport-scale model o' t' Surface-Launched Cruise Missile (SLCM) used by t' US Navy, painted in colorful red-white-blue that was probably for marketin' but nay very likely used on t' missiles used in service. Begad! Blimey! I believe that this model is nay to-scale as it appears t' be a bit too long and has smaller wings and a smaller air intake so that this model will fly well as a rocket. Aye aye! Blimey! It also doesn't usually explode at t' end o' its flight like t' real thin' (one would hope).

BUILDING:
T' air-intake is made from a light cardboard. I considered re-makin' this out o' a thin balsa wood, but figured it be unlikely t' get damaged durin' flight because o' its location.  As it happened, I pressed a little too gingerly on t' rocket while applyin' decals, and bent it a bit. It returned t' shape, but nay before it cracked t' white gloss finish on it. Ahoy! Blimey! T' cracks are nay very noticeable on t' photo. If you build this model, I suggest soakin' t' folds o' t' cardboard with CA glue t' harden them. Aye aye! Blimey! Mine started t' split while handlin' t' rocket while sandin' t' finish.

You may notice I tapered t' launch lugs on this model; partly for cosmetic reasons, matey, and partly because it might reduce air drag, me bucko, but I don't know that it's been scientifically proven. Well, blow me down! T' air-intake adds drag I'm sure, but I am bankin' on it nay bein' that much o' a problem, so I didn't go through with me thoughts o' providin' vent holes on t' back o' t' scoop, which would make t' model look a bit odd and would nay entirely reduce t' drag anyway.  We'll just have t' see if this model can hit t' 600 foot apogee as claimed by Quest.

FINISHING:
T' color difference in t' blue Testors paint and t' decal's blue shade doesn't look too bad in this photo, but in person you will be able t' see t' shade difference easily. Ahoy! Take a close look behind t' air-intake where t' square panel decal is. Behind that thar was a gap in t' blue decal which I covered with t' blue from a second set o' Quest decals. Even in this photo, you can see t' obvious shade difference betwixt t' two blues o' t' decal sheets from Quest. Avast, me proud beauty! T' purple-ish square is from a set o' Quest decals I didn't use.  If you build this kit, I wish you t' best o' luck gettin' t' paint and decal shades t' match, but don't count on it.

Quest's instructions do nay tell you where t' place all t' decals. Avast, me proud beauty! You have t' get a little creative. Arrr! Also, t' geometry o' t' rocket and decals does nay match, so you will have t' be careful and flexible when applyin' them.  T' locations o' t' decals and t' air-intake, wings and other features do nay line up as shown in t' illustrations (which don't exactly match themselves!).  I used Testors spray paints. Ya scallywag! T' red came out as a very close shade t' t' decal shade, but t' blue was pretty far off t' mark. Begad! I had a second set o' decals from Quest, and t' blue on t' decals looked quite a bit different than t' blue decals I used on this rocket. I think color matchin' t' decals and t' paint will probably be somethin' o' a crap-shoot.

Sadly, I also applied a clear-coat on top o' t' decals t' protect them. This be also Testors brand, t' same as all t' paint. Begad! Perhaps I sprayed it on too thick, matey, but even though t' decals had several days t' dry, t' clear-coat seemed t' soak in t' t' decals and wrinkle them all up (after t' photographs at least). Well, blow me down! So while this model looks good from a distance at launch, up close it's more like a wrinkled old man.

FLIGHT TESTS:
As expected, matey, this model didn't perform close t' Quest's prediction. In light winds with a C6-3, me hearties, it reached 492 feet, arrr, on a B6-4 it only reached 132 feet. Ahoy! Flights were made with an Altimeter 2 inside clipped t' t' nosecone. Avast, me proud beauty! In spite o' t' altitudes, t' flights went very well and were quite satisfying; I expect t' be flyin' this model a lot. Well, blow me down! This rocket has flown higher than t' Great Pyramid o' Giza in Egypt, even before it lost about 26 feet from erosion. It could have flown over t' Kingda Ka Roller Coaster in Jackson.

Flight Date: 2012-03-18
Rocket Name: Tomahawk SLCM
Kit Name: Quest - Tomahawk {Kit} (3007) [1994-]
Flyer's Name: Rich DeAngelis
Motors: C6-5
Launch Site: Penn Manor School Lancaster PA
Actual Altitude: 492 Feet

T' Tomahawk flew well with a C6-3 in stronger winds, me bucko, but in light winds it be even better. This time I used a C6-5, matey, and it burned for 2 seconds, acceleratin' at 7Gs peak, 2.3Gs average. Aye aye! It reached a speed o' 100 mph and coasted up for an additional 4.4 seconds t' an altitude o' 459 feet. T' ejection charge was 1/2 second early, and it apogeed 1/10 second later 33 feet higher at 492 feet.  It then descended under a good chute at 9 mph for a total flight time o' 39.7 seconds. Ya scallywag! It landed apx 300 feet away, me bucko, a total success.

Unusually, I mounted this rocket upwind o' t' launch rail t' get a better angle for photography. Well, blow me down! Video analysis showed that as it lifted off t' 4' rod, me hearties, it rotated around 180 degrees t' t' downwind side before it left t' rail. It continued it's rotation after it left t' rod until it was out o' t' video frame. Normally I position t' rocket downwind o' t' rod t' prevent this. Well, blow me down! T' $100 question is: Does this spin hurt t' performance (altitude/speed) or does t' slow rotation help with stability? This is science fair project stuff, but nay for me - I'm too old. Ya scallywag! Maybe your kids?

StageMotor(s)
1Quest C6-5

 

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