Helicopter model rocket

As I mentioned last week, I have been working on helicopter model rockets for teeny 1/4A3-3T model rocket engines. I test flew my first model last week. The blades deployed before landing, but just barely. I'm now working on a shorter model that I hope to test before the contest this weekend. Here is the model I tested with blades folded before launch.



( More pictuces and stuff beyond the cut )