John Carroll submitted this photo and note: “I was out doing some aerobatics while my friend took pictures. This is a 100-hp Sonex, normally aspirated and without inverted fuel and oil. An aircraft engine will never know which way gravity is pulling when the pilot keeps a positive g-load while maneuvering.”

Would you like to have your photo featured as Picture of the Day? You can submit it via this form.
All photos sent in for Picture of the Day are also considered for our new Page 4 photo feature in the print issue of General Aviation News, as well as A Year in Pictures in the December issues.
Looks like a beer can airplane to me.