There's not much in the way of "plans" or "dimensional data" for the Honest Ivan. In the http://www.ninfinger.org/rockets/Mo...04n03_12-71.pdf , G. Harry Stine wrote that "...Honest Ivan had no parts list. It wasn't 'designed.' It happened. We never bothered to measure." The only dimensional data that exists is knowing that the fins were cut from 3/32-inch by 3-inch wide balsa sheet.

I made line drawings of the fins, body tube, and nose cone by tracing over the top of that photo of Harry with the Honest Ivan. Assuming that the chord of the fins was 3-inches, I used that dimension to scale up the line drawing to full size.

I also compared my fin and nose cone line drawings to another photo (see attached) to see if they matched. They did match.

The main airframe - that being the "big tube" portion of the airframe to which the motor cluster and nose cone were fitted - did not match. I puzzled about this for a bit until I realized that the Honest Ivan power pranged on its second flight. The Honest Ivan was repaired, but it ended up a little shorter. The rocket that Harry is displaying is the retired, shorter Honest Ivan. The prototype shown just prior to launch shows the original model.

Attached Thumbnails

 

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-Wolfram v. Kiparski
NAR 28643 - TRA 15520
MTMA Section #606 President