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. Begad! Blimey! Construction be based on a set o' plans I found on a Japanese website for a paper X-Win' model. Blimey! Blimey! From these plans, me hearties, I was able t' create templates for t' X-Wing's fuselage bulkheads, arrr, wings, cockpit and nosecone. Construction began with t' purchase of a 38mm motor tube, me hearties, arrr, a sheet o' 1/4" aircraft plywood and several 1/4" dowels. Avast, me proud beauty! Blimey! I cut t' fuselage bulkheads from t' plywood, notched them at the corners t' accommodate t' dowels, shiver me timbers, then joined them together. Anyone who has built model airplanes will be familiar with this type o' construction. Well, blow me down! Blimey! 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. Well, blow me down! Blimey! Aye aye! Blimey! T' fuselage was then covered with cardboard. Avast, me proud beauty! Blimey! After much fillin' and sanding, two wraps o' 6 oz fiberglass were applied t' t' fuselage. Avast! Blimey! Arrr! Blimey! Holes were cut in t' bottom o' t' fuselage t' accommodate t' 1/2" copper pipe that would serve as t' launch lug. Ya scallywag! Blimey!

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

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

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

Durin' final assembly, 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. All gaps were filled with an epoxy paste called PC-11. 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, me hearties, let me know!), Testors Yellow and Krylon Red. A mask was created t' spray t' "red five" pattern on t' wings. Ahoy!

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

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

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

This was me first scratch built high power model, ya bilge rat, me bucko, and it be a great experience. Well, blow me down! T' excitement is much higher when you are flyin' a model you built from scratch. Well, blow me down! I highly recommend givin' it a try. Avast, me proud beauty!

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. Well, blow me down! Blimey!

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