Plastic Model Conversion (PMC)

NARTREK Plastic Model Conversion
There are darn few places you can find info on the web about PMC. Plenty of pics, but usually of the launch, not of the "aftermath", and none on internal design. Here are a few resources that will whet your appetite:
  • Steve Roger's PMC Rockets page, a fairly decent overview of what's currently available that can and cannot be converted.
  • PMC-rockets Yahoo! Group - A group for discussion of tips and techniques for conversion of plastic models into flying rockets. The Files section contains some helpful magazine article reprints.
  • Sven Ninfinger's Spacecraft and X-Plane Models page details just about every styrenne rocket kit thats ever been available and has a few decent links.
  • NARTS has a Technical Report by Ken Brown on PMC.
  • The NAR Pinkbook Entry on PMC.

Colonial Viper

Box Art
Box Art

Maker's Article The first model I seriously considered for this level was this Revell-Monogram kit. This is the 1996 version, not the earlier one with shooting turbolasers.

This isn't new ground, I know of two other folks who've done this one; Yitah Wu's features conventional recovery and has stability problems, but I know little about Bruce Markielewski's other than its a three engine cluster and flies from a ¼ inch rod. Assuming he's got the engines canted at the Cg, it appears to be located directly under the cockpit. Estes did a kit of the Viper (1310) which, even though it was made from standard body tubes and balsa, still required an enormous amount of nose weight; four NCW-1As. Heck, the Enterprise only requires two.

While a true performance model of any conversion is impossible, I'd at least like to have a rough idea of an appropriate motor delay. Cd is gonna be high, not just from parasitic drag, but because of the thick, blunt fins and multiple sharp edges. My estimating of the frontal area is 4½ sq. in. from what I believe is a fairly accurate drawing of it. This is equivalent to a tube 2.4 inches in diameter. While the Cg can be measured empirically, estimating the Cp ain't gonna be easy. I've a sneaking suspicion that there's gonna be a whopping chunk of lead in the nose, and that means an imaginative deployment set-up.

I got two of these on clearance for $5.00 from two different places. Guess there aren't as many Battlestar Galactica fans/fine scale modelers as the Internet would lead you to believe, huh?

Specifications
StatisticPrototypeScale
Length9.05 m.11 in.
Height5.95 m.
Width4.02 m.
Weight12,024 kg


Ariane 4

I've completed work on this conversion, read more about it by clicking on the title above.


Jupiter C

I've completed work on this conversion, read more about it by clicking on the title above.


Mars Liner

I've started work on this conversion, read more about it by clicking on the title above.

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