The nacelle is a cover housing (separate from the fuselage) that holds engines, fuel, or equipment on an aircraft or wind turbine. In some cases—most notably the World War II-era P-38 Lightning airplane—an aircraft's cockpit may also be housed in a nacelle. The covering is typically aerodynamically shaped. In a jet engine the nacelle is composed of the podded engine inlet, fan cowl, thrust reverser, and the exhaust nozzle.