A Rocket plume refers to the cone of hot exhaust gases produced by the burning and burned rocket propellant. Some plumes are huge and very incredible to observe, i.e. Shuttle launches.

Rocket plumes are studied a lot in the field of boost phase discrimination of ballistic missiles. These plumes produce infrared and radio frequency signatures that are important in target feature extraction for classification. Plumes are very hard to model both analytically and computationally, making them a hot topic for research.