Well.....how much variation in the airframe will you accept for the purposes of that question?

For example, the current Estes Make-It-Take-It is an E2X version of the RTF Hijinks. The RTF Athena is the same model save for the body is one inch longer. I wouldn't be at all surprised to see other names on the combo of the Alpha III fin can and the PNC-50YP nose cone with some length of BT-50 between 'em as you go back more than a couple of years - I just don't know what they would be called as there is about a 30 year gap in my knowledge of Estes rocket names. If the nose cone can be different then the Alpha III itself is another variant (the original). The Alpha IV is an Alpha III wearing a different livery. If we can change materials there are the original Alpha (in several subtle variations and some not so) as well as the Alpha II (an educator's version).

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Bernard Cawley
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