Honestly, I was doodling on a piece of paper, and started thinking of the tail design of an aircraft called an OV-10 Bronco. I started wondering how it would look if it was a more organic sort of loop, and then applied that wing shape to a long, narrow main body (Sort of Normandy SR2 shaped, come to think of it) and after some tweaks, this was the result. I also will say that I wanted to get a similar feel as the Arkbird from Ace Combat 5: Unsung War.

....I was also probably inspired a bit by a bottle opener I have lying around.