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Old 01-07-2018, 11:56 AM
stefanj stefanj is offline
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Join Date: Mar 2005
Location: Hillsboro, OR
Posts: 2,847
Default Need some help: AIM-9 Sidewinder upper tube

My rocketry club got a box of "leaving the hobby" donations.

One item is a Estes kit # 2121 AIM-9 Sidewinder. It was missing the upper section, which consists of a plastic coupler/boat tail, a plastic nose cone, a piece of slotted BT-55, four canard fins, and an internal piece of BT-20 (I think) which connects the boat tail and cone.

Becasue I don't want to go to the time and expense of finding the plastic cone unit, I would like to "fake up" an upper section. I picked out a 5520 balsa transition section which I'll carve into the rough shape of the cone. I'll mock up the tail cone by adding a few inches to the upper body and adding paper strips.

Now . . . one thing I could use help with is the length of that upper body, and the position of the fin slots. Does anyone have a Sidewinder handy they could measure?

Plan is to fix up the model, then donate it to a newbie family when the small rocket launch field opens for the year.
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