Compare to propeller and jet aircraft engines. Commonly aircraft are propelled by airbreathing jet engines. It set several airspeed records for jet aircraft. Until 2015, women were banned from becoming fighter jet and reconnaissance aircraft pilots. The aircraft briefly carried nose art consisting of the Ford Cobra Jet cartoon cobra. Did not enter production due to introduction of jet aircraft. It is an aircraft based on the ERJ 145 civil regional jet. Rocket engines employ the principle of jet propulsion. F-16 is a single engined Medium weight fighter jet. Impulse turbines change the direction of flow of a high velocity fluid or gas jet. Airlines have regulations aimed at combating pilot fatigue caused by jet lag. There are several methods for detecting water in jet fuel. See was the pilot of their T-38 trainer jet. The volume of jet fuel varies with temperature. Impulse turbines change the velocity of a water jet.