What is this pattern?
 

It's on the tip of my tongue, but my brain wants to know, lol.

I could only find it as a kaleidoscope pattern, no other name.

Try Summer Breeze, a tutorial from Donna Jordan. I've made several of those and love each one.

It is loved but looks like a challenging pattern. Definitely going to check out Donna’s tutorial.

I agree it is Kaleidoscope. There are two basic ways to do it, the easier way is to make the central hex shape into a square by putting on corners to make it a square. Is just alternating blocks at the basic level!

From my first book of quilting and the first way I did it was the Ruby McKim version -- this one I've also seen with "rocket" names.
http://vintagecraftsandmore.com/vtns...quilt-pattern/

Here is the link to the Quilters Cache block - it finishes at 12" and is paper pieced.

https://www.quilterscache.com/K/KaleidoscopeBlock.html

You're right, that is exactly the one, thanks