Practice question

Which type of aircraft typically generates the most wake turbulence?

  1. Light aircraft
  2. Commercial jetliners
  3. Military fighter jets
  4. Helicopters

Answer: B — Commercial jetliners

The most significant source of wake turbulence comes from commercial jetliners. This is due to their larger mass and higher wing loading compared to other types of aircraft. When a jetliner flies, especially during takeoff and landing phases, it generates strong vortices trailing from its wingtips. These vortices are a byproduct of the differences in pressure created by the wings as they generate lift. Commercial jetliners typically operate at higher weights and are designed with larger wingspans, which exacerbate the intensity of the vortices produced. They create what is known as "wake turbulence," which can pose significant risks to smaller aircraft that might follow too closely. The substantial weight of these aircraft means their vortices linger longer and can travel considerable distances, potentially affecting nearby flight operations. Contrastingly, lighter aircraft generate significantly less wake turbulence due to their reduced mass and wing area. Military fighter jets, while they can create significant turbulence, typically have a smaller wingspan and lower weight compared to commercial airliners. Helicopters also create wake turbulence, but it is different in nature and is generally less intense than that produced by large commercial aircraft, primarily due to their operating patterns and rotor downwash. Thus, commercial jetliners are recognized for generating the most pronounced

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