Scratch X-Wing Fighter Original Design / Scratch Built

Scratch - X-Wing Fighter {Scratch}

Contributed by Eric Maher

Manufacturer: Scratch
(by Eric Maher - 11/18/05) XWing

I started work on the X-Win' shortly after gettin' level 1 certification. Avast, matey, me proud beauty! Construction be based on a set o' plans I found on a Japanese website for a paper X-Win' model. Avast, me proud beauty! Begad! From these plans, I was able t' create templates for t' X-Wing's fuselage bulkheads, wings, me bucko, cockpit and nosecone. Ahoy! Ahoy! Construction began with t' purchase of a 38mm motor tube, shiver me timbers, a sheet o' 1/4" aircraft plywood and several 1/4" dowels. Avast! I cut t' fuselage bulkheads from t' plywood, shiver me timbers, notched them at the corners t' accommodate t' dowels, ya bilge rat, me hearties, then joined them together. Ahoy! Anyone who has built model airplanes will be familiar with this type o' construction. Begad! A 2 1/2' long section o' 2.6" body tube was placed inside t' forward end of fuselage t' contain t' parachute and t' allow easy attachment o' t' nose cone. Ya scallywag! Begad! T' fuselage be then covered with cardboard. Avast! Begad! After much fillin' and sanding, two wraps o' 6 oz fiberglass were applied t' t' fuselage. Avast! Holes were cut in t' bottom o' t' fuselage t' accommodate t' 1/2" copper pipe that would serve as t' launch lug. Aye aye! Avast!

In progressWith work finished on t' fuselage, I began on t' wings. Ahoy! T' wings are constructed o' a basswood skeleton covered with a glassed balsa skin. Well, blow me down! T' engine fairings are build from cardboard reinforced at t' corners with basswood. Arrr! Three different body tube sizes were used in t' construction o' t' wings. Avast, me proud beauty! Blimey! T' large motor tubes are 4" cardboard tubing, me bucko, ya bilge rat, me bucko, t' aft "afterburners" are 2.6" tubin' and t' lasers on t' wingtips are made from 54mm motor tubing. All tubin' was purchased from LOC Precision. Avast! When t' wings were complete, mounting holes were cut in t' fuselage. Avast, me proud beauty! Win' are mounted through-the-wall; butted up to the motor tube. Ya scallywag!

NOse ConeT' nose cone and cockpit are built from t' same cardboard that was used t' cover t' fuselage. Blimey! Avast, me proud beauty! Blimey! Again, templates were created from t' paper model plans. A 2.6" coupler was epoxied inside t' nosecone t' allow attachment t' t' fuselage. 2 lbs o' BB's and epoxy were added t' t' nosecone for stability.

T' detailin' on t' aft o' t' model be made with wood bits from Michael's arts and crafts. Aye aye! There are pieces o' wooden flower pots, matey, bowls, me bucko, milk cans, etc. Begad! R2-D2 is from an old Estes mini-engine powered kit. Blimey!

Durin' final assembly, me bucko, t' wings were glued in place and acrylic panels were installed betwixt t' top and bottom wings for increased strength and to improve stability in flight. Well, blow me down! Blimey! Ya scallywag! Blimey! All gaps were filled with an epoxy paste called PC-11. Arrr! Blimey! Many hours o' sandin' were required t' get t' model ready for paint. T' paints used were 4 cans o' Testors camouflage gray (if anyone knows o' a lower cost alternative, let me know!), Testors Yellow and Krylon Red. Avast, me proud beauty! Blimey! A mask was created t' spray t' "red five" pattern on t' wings. Blimey! Blimey! Avast, shiver me timbers, me proud beauty! Blimey!

With construction nearly complete, shiver me timbers, ya bilge rat, I began t' think about recovery. Avast! The finished model weighs in at about 13lb with motor installed. Ahoy! It was goin' t' be difficult t' get enough chute into this thing. Avast! T' best I could do was two 48" chutes on t' rocket, me bucko, and a separate 36" chute on t' nose.

FlightT' rocket flew at NYPower 11 on an Aerotech I-284 with 6 second delay. I had thought about tryin' t' do a level 2 cert with t' model, shiver me timbers, but I be nay at all confident that t' model would be recovered without damage. Ahoy! Besides, arrr, I really want t' get into altimeters and dual deployment for me eventual level 2 attempt. Arrr! Breezy conditions made if difficult t' orient t' rocket edgewise t' t' wind. Blimey! Aye aye! A brace was improvised usin' a piece o' body tube that be found near t' launch pad and some wire from used igniters. Takeoff was slow, and t' flight path be a gentle arc onto the rocket's back. Avast, me proud beauty! Arrr! T' flight was slightly marred by t' premature separation of t' 2lb nosecone which proceeded t' snag on one o' t' wings. Ya scallywag! Ahoy! Maximum altitude be around 500' T' fight be a real nail biter with t' twin parachutes deployin' about 100' off t' ground. As expected, t' chutes were not sufficent t' prevent damage t' t' rocket. Well, blow me down! Two o' the "afterburners" were damaged, one heavily. Avast, me proud beauty! A split also occurred along the front o' t' fuselage, this may have been caused by t' premature separation, or t' plus-size ejection charge that be used t' ensure deployment. T' model is repairable.

T' rocket be a real crowd pleaser. Avast, me proud beauty! People seem t' like t' more unconventional models. Blimey! Blimey! T' me knowledge it was t' only rocket at NYPower that got a cheer when t' chutes deployed. Blimey!

This be me first scratch built high power model, and it was a great experience. T' excitement is much higher when you are flyin' a model you built from scratch. I highly recommend givin' it a try. Arrr!

Special thanks t' Bobby Buchalski from Hanger 11 for assistance and advice in preppin' t' model for flight and t' Chuck Rudy from Voodoo Digital Productions for assistance at t' launch pad. Ahoy! Begad!

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