page_title: Basic fighter maneuvers
section_title: High-g barrel roll
hierarchical_section_title: Basic fighter maneuvers / Maneuvers / High-g barrel roll
caption_attribution_description: English: A high g barrel roll, performed over-the-top and underneath
context_page_description: Basic fighter maneuvers are tactical movements performed by fighter aircraft during air combat maneuvering, to gain a positional advantage over the opponent. BFM combines the fundamentals of aerodynamic flight and the geometry of pursuit, with the physics of managing the aircraft's energy-to-weight ratio, called its specific energy.
  Maneuvers are used to gain a better angular position in relation to the opponent. They can be offensive, to help an attacker get behind an enemy; or defensive, to help the defender evade an attacker's air-to-air weapons. They can also be neutral, where both opponents strive for an offensive position or disengagement maneuvers, to help an escape.
  Classic maneuvers include the lag pursuit or yo-yo, which add distance when the attacker may overshoot the target due to higher airspeed, the low yo-yo, which does the opposite when the attacker is flying too slow, the scissors, which attempts to drive the attacker in front of the defender, and the defensive spiral, which allows a defender to disengage from an attacker.
context_section_description: A high-g barrel roll is a combination of a loop and a snap roll. A high g barrel roll is a last-ditch defensive maneuver, performed when the attacker has achieved a suitable guns solution, in order to cause an overshoot. The high-g barrel roll is a violent maneuver which is performed much more aggressively than a normal barrel roll. Range is critical to the success of the roll, and the defender will usually turn very hard, or employ other measures to draw the opponent very close before performing the roll. The roll is executed by applying hard back-stick pressure, creating the high g-forces, and adding hard rudder input to assist the ailerons in rolling the fighter. A high-g barrel roll can be performed "over-the-top", or it can be performed "underneath", which is accomplished by rolling upside-down and beginning the maneuver from the inverted position. The high-g barrel roll is an energy-depleting maneuver that rarely causes the attacker to fly out in front, but usually will result in a flight path overshoot, a flat scissors, or, at the very least, will temporarily disrupt the attacker's aim.
caption: A high g barrel roll can be performed over-the-top or underneath.
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