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Aerobatics

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Aerobatics is the practice of flying an aircraft through maneuvers that differ from conventional passenger flights. The term is a portmanteau of "aeroplane" and "acrobatics." Pilots perform these maneuvers for training, recreation, entertainment, or sport.

Patty Wagstaff At KBJC
Patty Wagstaff At KBJC

While many fly for fun, aerobatics also serves as a critical element of flight safety training. It enhances a pilot's ability to recover from unusual flight conditions. This specialized flying requires a broad set of piloting skills. It also exposes the aircraft to much greater structural stress than normal flight.

To perform these moves, a pilot manipulates the aircraft's attitude along different axes. Most maneuvers involve rotation about the longitudinal axis, known as roll. Others involve the lateral axis, which is called pitch. Some maneuvers, such as a spin, displace the aircraft about its vertical axis, known as yaw.

Pilots often combine these individual moves into a complete aerobatic sequence. These sequences are used for either entertainment at shows or for judged competition. Because of the risks involved, some countries require pilots to wear a parachute during these flights.

Aircraft used for these maneuvers fall into two main categories. Specialist aerobatic aircraft are designed for ultimate performance. Examples include the Pitts Special, the Extra 200 and 300, and the Sukhoi Su-26M and Su-29. These planes prioritize agility over general-purpose uses like touring or easy landings. Conversely, aerobatic-capable aircraft serve a dual purpose. Models like the Cessna 152 Aerobat or the R2160 Acrobin can carry passengers and luggage while still performing basic aerobatic figures.

Spanish Air Force EC-120B Colibri
Spanish Air Force EC-120B Colibri

Aerobatics has a deep history tied to both art and warfare. In the early days of flight, pilots used aircraft in "flying circuses" to entertain onlookers. These pilots flew for artistic reasons or to draw gasps from the crowd. Eventually, these maneuvers were found to provide tactical advantages in aerial combat. Many famous moves, such as the Immelmann turn or the Split S, were developed during military conflicts. Today, some military teams fly in formations to reflect pride in their armed forces.

Formation aerobatics involve teams flying in close groups. Most teams fly with between four and ten aircraft, though some are state-funded or commercially sponsored. The record for a formation is 22 aircraft, set in 1958.

Frecce Tricolori 2022
Frecce Tricolori 2022

To make the flight paths visible to spectators, teams often use colored smoke. This smoke is not created by combustion. Instead, it is produced by vaporizing fog oil into a fine aerosol. This is done by injecting the oil into hot engine exhaust or using a dedicated device. The Fleet Air Arm 702 Squadron, known as "The Black Cats," was the first military team to use smoke at will in 1957.

Competition aerobatics is a global sport governed by the FAI Aerobatics Commission (CIVA). Pilots progress through several levels of complexity. They begin at the Primary or Graduate level, then move to Sportsman, Intermediate, and Advanced. The highest level is called Unlimited.

utterly.butterly.aerobatics.arp
utterly.butterly.aerobatics.arp

During these flights, pilots experience intense g-forces. Experienced pilots can pull ±5 g for short periods. Unlimited pilots may experience even more extreme levels, possibly up to +8/−6 g. It is generally accepted that +9 g for more than a few seconds can lead to a loss of consciousness, known as GLOC.

Aerobatics is not limited to fixed-wing airplanes. It can also be performed in gliders and specific helicopters. Examples of aerobatic helicopters include the MBB Bo 105, the Westland Lynx, and the Eurocopter EC120 Colibri. Various military groups, such as the British Army and the Indian Air Force, have helicopter display teams. While jet-powered aircraft are used, they have different limitations than propeller-driven planes. Jets cannot exploit gyroscopic forces and fly much faster. This increased speed means larger maneuvers and higher g-forces for the pilot to withstand.

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File:Spanish Air Force EC-120B Colibri.jpg
Spanish Air Force EC-120B Colibri.jpg
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