askvity

What is the maximum speed limit of a plane?

Published in Aircraft Speed 2 mins read

The maximum speed limit for a modern passenger aircraft is generally around Mach 0.85.

Understanding Plane Speed Limits

While there isn't a hard "speed limit" in the same way as on a highway, aircraft speed is limited by several factors, primarily aerodynamic and structural. Going beyond a certain speed can cause significant problems. The given reference indicates a typical maximum speed for passenger planes.

Mach Number and Speed

  • Mach Number: This represents the ratio of an object's speed to the speed of sound in the surrounding medium (air). Mach 1 is the speed of sound.
  • Passenger Aircraft Limit: According to reference data from September 20, 2023, modern passenger aircraft are typically limited to Mach 0.85, which is approximately 667 mph (1,074 km/h).

Factors Limiting Speed

  • Aerodynamic Drag: As speed increases, drag increases exponentially.
  • Structural Integrity: Exceeding design speed limits can put undue stress on the aircraft structure.
  • Fuel Efficiency: Higher speeds often mean lower fuel efficiency.

Exceptions to the Rule

While Mach 0.85 is typical, certain aircraft, especially military planes, are designed to exceed this speed significantly. Concorde, a supersonic passenger jet, could reach speeds of Mach 2.04 (approximately 1,354 mph or 2,180 km/h).

Related Articles