Boundary Layer Ingestion. Original from NASA. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/440045/free-photo-image-fuel-cleveland-efficiencyFree Image from public domain licenseBoundary Layer Ingestion. Original from NASA. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/440035/free-photo-image-nasa-experience-center-fuelFree Image from public domain licenseBoundary Layer Ingestion. Original from NASA. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/440074/free-photo-image-tunnel-ohio-fuelFree Image from public domain license