[operationcougar]

Recently ive been kicking around the idea to attempt to build a smaller version of a jet engine,one of those just for kicks kinda ideas.

But what ive been confused about is in all the material ive read on the engines ive had some conflicting info on if the compressor blades spin freely from the or not? and if not what parts might i have this mistaken with? Also what is the best way to control the speed of rotation? Im assuming its mainly based on the amout of fuel being delivered to the combustion area?

thanks,
ian