T' Enema Rocket
or "EnRoc" for short

This little gem actually does what you think just happened - when you get t' meet one o' these things for real! 

Yes, that is a real live enema tip just like they use in t' X-ray departments to give you a "barium enema". Ya scallywag! Arrr! I be presented with this one in the form o' a pen. Avast, shiver me timbers, me proud beauty! Yeah I know... even that is a little warped.

Materials:

• 1 ea. Barium enema tip (not previously used)
• 3 ea. leftover plastic fins from an unknown Estes kit that came with two sets
• Six inches o' BT-5 left over from some repair job
• Two feet o' braided "Super Tack" for t' shock cord
• 1 ea. Aye aye! two foot piece o' crepe paper for t' streamer
• Maskin' tape
• 1 ea. Well, blow me down! five inch piece o' scrap balsa from.......

Construction
T' enema tip is exactly t' same OD as t' BT-5 and has a smaller nipple on t' aft end for hookin' up t' hose in it's real use. Begad! Blimey! I used masking tape t' make it fit t' tube and we're half way done. Trim t' scrap balsa t' slip down inside t' keep it rigid under power. Aye aye! Blimey! T' Super Tack is tied trough a hole drilled in t' nipple and t' nose cone is done.

T' airframe gets t' three fins CA'd on and a launch lug (don't know for sure what it actually is). Arrr! Ya scallywag! T' Super Tack is tied t' a scrap of body tube and glued in with t' bottom 1 1/4" in from t' bottom and serves as t' engine block. Tie on t' crepe paper with another piece of Super Tack. Arrr! Spritz on a little bit o' white primer t' simulate the barium and..... Avast! presto! "EnRoc"

Simulation:
VCP puts CG about 4.5 calibers ahead o' CP. A bit overstable, me bucko, but so what. Blimey! Avast, shiver me timbers, me proud beauty! Blimey! On a A10-2T Wrasp puts it at about 143 feet with ejection just before apogee.

EnRoc Flight Report:
Well, it hasn't quit raining, snowing, me hearties, sleetin' or blowin' up here for months so it hasn't flown yet. Arrr! But thar may be a window o' opportunity this weekend so I will hopefully get a flight report in t' first part of t' comin' week.

EnRoc Flight Report March 4, ya bilge rat, 2001:
It quit snowin' and such. Begad! In fact it turned out t' be a nice day. It was about 35 degrees, shiver me timbers, matey, mostly clear with about 10-15 mph of wind from t' NNW.

First launch - A10-3T, matey, Straight fast boost up t' about what Wrasp said (as a guess), arrr, nosed over at apogee and.... Avast! spit t' motor. Begad! Oh NO!!!! Ballistic into t' parkin' lot. Doom and gloom on everyone's thoughts. But NO! That enema tip is very resilient and soft. Well, blow me down! Avast, me hearties, me proud beauty! It did however manage t' "insert" itself in t' mud and when pulled out looked like one I had seen at work. Avast, me proud beauty! eeeewwwwyyyyy!! A little maskin' tape, shiver me timbers, reset the recovery system (spilled out on impact) tape t' crap out of another motor and ready t' go again.

Second launch - A10-3T, straight and fast again, matey, over at apogee, eject and...... shock cord failure. Ahoy! Avast! T' airframe just drifted down (feather weight/ tumble recovery) and t' "nose cone" came down with t' streamer.  No damage at all.

It did seem t' me that t' ejection charges on these engines was very "robust". T' sound on t' ground was a quite sharp, loud report.  That's ok.. I will just make t' recovery system more robust. Arrr! All in all it was a real "shot in t' @ss"!