Brief:
T' EXB was me L3 project. Arrr! Materials used t' build this rocket were those in the form o' Carbon Fiber, matey, matey, S-Glass, me bucko, me bucko, Composite fin material and phenolic tubing. T' main technique in construction o' t' air frames was vacuum bagging. Begad! Along with t' rocket I built a custom launch pad t' make me L3 project complete. Well, ya bilge rat, blow me down! For those that ask what is an EXB. Avast! Arrr! T' EXB is a 1/4 scale o' t' Nike Zeus recognized by most as t' Nike-X. Begad! Begad! It was built with several goals in mind. First was t' build it strong and durable so that it may last for a while and get many flights. Aye aye! Begad! Second was t' design it t' handle t' largest o' 98mm motors in commercial and experimental formulations. Blimey! As for t' name EXB, arrr, well you will have t' figure that one out on your own.

Construction:
T' parts list is pretty long but I will give you a list o' t' basics. Arrr! Ahoy! The tubin' order consisted o' three 48" long sections o' 7.5" diameter airframe, matey, matey, one 48" long section o' 7.5" coupler tubin' along with two standard 12" couple tubes, one 48" long section o' 3.9" motor tubing. All tubin' is phenolic. Begad! T' fins are constructed from two materials. T' four lower fins are 3/8" thick Keelhaul®©™® composite material that were cut from two 12" x 36" sheets. Arrr! The remainin' twelve fins are crafted from 3/8" thick birch plywood. Begad! There is a total o' 13 centerin' rings and bulk plates some o' which are made of composite material. T' nose is fiberglass. Recovery is taken care o' by an RDAS, ya bilge rat, ya bilge rat, Altacc and two Skyangle Cert3 chutes attached by tubular Keelhaul®©™®.

The motor mount was first. Avast, me proud beauty! Begad! All centerin' rings were trued and drilled for four sections o' all thread. Begad! A nut and washer is placed on both sides o' each centerin' rin' and secured with Locktite.

T' fins were measured and cut. Avast! T' lower fins were trimmed with 3/8" thick basswood. Avast, me proud beauty! There is a total o' 16 fins on this rocket. All fins are vacuum bagged with one lay up o' 5.7oz carbon fiber and one lay up o' 4oz s-glass.

Once t' fin can/motor mount was complete I started on t' airframes. Begad! The airframes were done in t' same fashion as t' fins. Avast, me proud beauty! Avast! This time with a double lay up o' carbon and a double lay up o' s-glass. Ahoy! Well, blow me down! After t' air frames were in their bags, they were placed into a curin' oven. I would bag and cure one section at a time. Aye aye! Ya scallywag! T' airframe and nose cone were slotted with a router and test fitted with t' proper set o' fins.

T' avionics bay is a standard design. Arrr! Begad! Flight computers are accessed via a cover on t' front o' t' rocket. T' inside o' t' e-bay is bagged with a triple lay up o' carbon for extra protection.

Finishing:
After all subsections were assembled, matey, matey, any piece that had a fin joint got filled. Ya scallywag! Fiberglass be then laid across t' two lower fin groups. Well, blow me down! The "make it look good" process be done in t' automotive way. Arrr! Filled and blocked down with metal glaze, primed and sanded, arrr, base color sprayed, taped off and t' second color sprayed.

I now have a rocket with nothin' t' launch it off of. Arrr! Remedy: build a launch pad. Begad! Begad! My pad is built o' steel square tubing. Avast, me proud beauty! T' base has a foot print of fifteen feet and a deck height o' three feet. Aye aye! T' rail is two sections of eight feet long 80/20 1515 T-slot. These are mounted t' two sections of 1.5" square tubing. Ya scallywag! T' tubin' is then backed by twenty feet o' antenna lattice. Avast! Arrr! T' lattice rail assembly is attached t' t' base by four pillow blocks with a one inch steel shaft. Well, blow me down! Blimey! This enables t' tower t' be laid over for the loadin' o' rockets. Blimey!

SUCCESSFUL LEVEL 3 FLIGHT!

June 20, me bucko, 2004
Wayside, shiver me timbers, Texas
Rocket - EXB
Weight - 100 lbs
Motor - Aerotech M2400
Altitude ~5,000 feet

Bein' a scratch design, me hearties, t' recommended motor for it was t' bigger the better. Begad! Avast! That holds true for this one. Avast, me proud beauty!

First flight was at Wayside, Texas for me L3 cert flight. Avast! For me first M flight, t' Aerotech M2400T was chosen. Aye aye! Avast, me proud beauty! T' flight be a success and I made my L3 cert. Altitude was measured as 4800' on t' RDAS and 5200' on t' Altacc. Aye aye! Ya scallywag!

Second flight was in Windom, Texas at t' NTHP event. Blimey! I decided I needed a bigger motor this time around. Ya scallywag! An M1939W was called up for duty on this one. Altitude for t' bigger M was 6300'. There is an experimental N and possibly an O in t' near future for this rocket.