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Sidewinder 80% scale November 22, 2008

Posted by rluhman in Rocketry.
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Now that I have a blog, I think it is time that I begin to document the steps that I’ve been taking to build my 80% scale AIM-9L Sidewinder.
 
rocksim drawing

Rocksim drawing of AIM-9L rocket.

I started out with just a nose cone.  I had found that Performance Rocketry was selling a Sidewinder nose cone that fit a 4 inch tube.  From there the rest would grow.  I started scaling up the AIM-9 drawings found on Jim Ball’s website.  They were quite good and show enough to detail to build a rocket of this size.

I determined that I was going to need three 34 inch sections of fiberglassed Loc tubing to get the length I needed.  The rocket body needs to separate in at least three places to work properly.  With this in mind I tried to set my separation points at corresponding separation points on the real missile or at least points where the separation joints could be hidden.  I also decided to use a PML CPR2000 type dual deployment system for recovery.  With those specifications I started laying out the parts that I would need.  Then I fired up RockSim to get an idea if I could make it stable.

With stability assured, I began fiberglassing the tubes.  Using some glass from Impulse Aerospace and West Systems epoxy,  the tubes turned out great.  Very smooth and strong.  That was the easy part. (more…)

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First Post at Luhman-ations November 18, 2008

Posted by rluhman in Uncategorized.
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I’m just getting started with this blog.  WordPress seems pretty powerful, but I think it may take me a while to sort out all its features.  In the future, I expect to post more articles, some with images and links to other sites.  If this works out well, I just might change our rocketry club’s web site to use WordPress.