Home > Electronics Cranny > The Electronics Cranny: Model Plane Control…with TUBES!

The Electronics Cranny: Model Plane Control…with TUBES!

September 9, 2013 Leave a comment Go to comments

By Neil Cuppy
Electronics Expert
jack1966
File Photo

Military use of bombs and little missile planes for targets and test purposes has become a big part of the news these days.  But the use of tubes is not merely limited to the Lankville Army and Signal Groups.  Like an eldtritch creeping puss, it has spread to the amateurs who can build and fly small gas-engined planes as a type of hobby.  The development of miniature (small) components and compact tubes has reduced the size of radio-controlled model planes to half of what it was ten years ago (graph available upon request).

One of the most valuable aids to radio control of model planes is the Yount RK-61 tube.  This tube, a gas thyratroid tube with triods, requires so little operating current that it is now possible to reduce the weight of your model plane to only 17 1/2 pounds!  The RK-61 was in short supply for awhile (some cadaverous halfwits attacked the plant) but now may be found with ease at your local electronics supplier.

For demonstrative purposes, I’d like to share my design schematic for the “Paulhan-Tatin” Aircraft, popular during the Teets Island Skirmishes of 1932-1934 (see figure one).

Airplane_design_diagram_1912_tatin_torpedo_PDoldLet’s begin by looking at the parts related to the Escarpment Mechanism.

1.  Bulkhead
2. Loops (rubber)
3. Cranks
4. Bowls
5. Carpeting
6. Strappy Paddle
7. Fin
8. Esoteric area of crushing, debilitating depression
9. Large round legs– makes it sturdy.
10. Coils. No. 32 out of the catalog. Wound it round the shaft in the way that the hindquarters of an offering beast might suddenly appear out of the shadows of your room.
11. L-shaped bracket
12-15. For illustrative purposes only

Hopefully, you are beginning to see how the parts fit together to make your plane fly with tubes.  Most important is the acquisition of quality loops.  This is the one thing that hobbyists often forget.  You will be sorry, however, if your plane flies onto a roof or into a tree or is crushed between two large rocks situated together like a couple of grand, folkloric titties.  So, do not skimp on the loops.

Next, insert the tubes.  The tubes should fit neatly into the area between the carpeting and the strappy paddle but should not touch either component.  Insertion should result in an immediate loud humming noise.  Don’t worry– you’re not going completely and slowly crazy nor are there mummies in the area.  This just means everything is working properly.  The tubes will continue to hum in this manner throughout our session.

Finally, throw your plane into the air from a high elevation– I recommend a parking garage or perhaps a tall hill.   WARNING:  as soon as you throw your plane into the air you will want to immediately engage the remote control– failure to do so will simply cause your plane to plummet to earth.  Nobody wants that to happen.

  1. Judge Socquettes
    September 17, 2013 at 3:08 pm

    Oh Neil. Your articles are such a delight! Particularly when I think of how you are the offspring of simple people of the dirt, cast down off the Plains of Lankville into our cities like vermin down a watery slide. It’s just WONDERFUL!

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