Smithsonian Air and Space Museum Udvar-Hazy Center, Chantilly, Virginia

Lockheed SR-71. Note the cones sticking out of the intakes. They are inlet cones[a].

Close up of the left inlet cone. It sets up the first oblique shock, which is conical and emanates from the cone apex.

The rear end of the engine. The nozzle and the ejector flaps convert static pressure to movement and accelerate the exhaust back up to Mach 3+.