Designer Techniques No. 9

The Boeing B-47 Stratojet

by Ron Collins  - Winter 1997

 

Ron Collins designed and built this fine Boeing B-47 Stratojet a year or so ago.  He has proved its excellent flying capabilities on various slopes since then.  Here in Ron’s own words are his views on the project.  

Ron Collins with his Boeing B-47 Stratojet

CONFESSIONS OF A MODEL ADDICT

Models.  I was hooked.  I liked to talk about them.  I liked to design them.  I liked to build them.  I liked to flv them.  I liked to crash them.  Err, no scrub that last bit.  I’m cured now.  All I do is dream of the great projects I could build if I had the energy.

Some years ago I saw the perfect plane to model.  Slab sided, with hardly a curve over the whole fuselage.  What could be easier?  Unfortunately it had been done before.  Many times in fact, and in all sizes.  It is called the B-52.  Hold on though, all is not lost.  That B-47 Stratojet looks pretty good I thought.  And it hasn’t been modelled before, unless you know different.  The first prototype took to the air in December 1947.  Boeing had built 1400 of them ending production in 1957.  This plane was a biggy and damned heavy with it.  It’s fuel load alone was heavier than a loaded Lancaster.  As to scale, I followed the simple method of fitting the fuselage on to an AO sheet which worked out at an overall length of 44.5” and a span of 50”.  That’s a  scale of 1:31 for the anoraks among us.  Pity about that round fuselage though.  A real modeller would of course simply make some round bulkheads tack on a few stringers then plank the lot with balsa to create yet another masterpiece.  I having no such skills - I reached out for the wimps stand-by.  Insulation foam.  Hot wired white foam for both the mid-section and tail section, glued on a piece of blue foam for the nose and shaped the whole ensemble before covering in thin sheet balsa.  You’ve now got yourself an aeroplane.  What could be simpler?

I will admit I did baulk at cranking out a set of six engine nacelles.  The originals were fashioned out of thin fibreglass tubes with balsa noses and jet pipes.  If I had only thought out the problems earlier the job could have been done a lot quicker and neater.

Since then Ted Gibbs has turned out a wooden buck for me and Andy Conway has blown a sample mould which looks really professional.  Now that I have the engine moulds I have started to look over my aircraft books to see what other models I can use them on.  After all, if Andy can design umpteen models from the same set of HAWK wings, then surely no one could object or even notice a set of B-47 nacelles on my next few models.  (Unless it’s a Spitfire...Editor).

Presumably some would have preferred an article giving a blow by blow account of how I glued bulkhead A to topside B, but from the models I see on the slopes few modellers need that sort of advice.  God, doesn’t their professional skills make you vomit.

Now that you’ve got the model completed what about the finish?  My usual method is Solartex sprayed with a car aerosol for quick drying.  The badges and emblems couldn’t be simpler.  Take a book of squadron or wing badges (e.g.. “Aircraft Markings“ by Barry C. Wheeler. Prentice Hall Press) into a colour photo copy shop to get transferred on to an A4 white sheet.  Cut out, stick on, spray over with clear lacquer.  USAF emblems can be got from the model shop or Letraset but those with access to a computer can hack out their own on sticky back paper.  You can now take it up the slope and throw it off with confidence.  Will it win any prizes? Probably not.  We’ll all be admiring yet another perfectly turned out Spitfire.  

Serves you right for daring to be different!

Ron.

 

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