The flattening of the Spitfire's 12 exhaust pipes increased the speed of theescaping gas. This provided a small but significant increase in thrust, adding almost 5 miles per hour.
Image Number: WEB10808-2008 Credit: Photo by Carolyn Russo, National Air and Space Museum, Smithsonian Institution For print or commercial use, please contact: Smithsonian Institution Reproductions are not currently available. If you would like to use this image as-is, please submit a permission request.
