Definition

1. Noun:
   • The increase in aerodynamic drag as an airplane approaches the speed of sound: This term refers to the sharp, rapid rise in air resistance and other physical effects encountered by an object, especially an aircraft, as its speed nears the speed of sound (Mach 1).

Usage

• The term "sonic barrier" is used primarily in aviation and aerodynamics. It describes a physical phenomenon, not a literal solid wall. It is often discussed in historical contexts regarding early attempts to achieve supersonic flight.
• Example:

Examples

• Noun:
  • Early jet pilots feared the sonic barrier because it caused severe control problems and buffeting.
  • The research focused on understanding the forces at the sonic barrier.

Advanced Usage

• The concept is closely related to transonic flight, which is flight through the speed range just below and just above the speed of sound, where the sonic barrier is encountered.
• The term is often used metaphorically to describe any significant obstacle or challenge that seems difficult to overcome.
  • Example: The team's innovation helped them break the sonic barrier in battery technology.

Variants and Related Words

• Sound barrier: This is a more common synonym for "sonic barrier." The two terms are used interchangeably.
• Transonic: (Adjective) Referring to speeds close to the speed of sound.
• Supersonic: (Adjective) Referring to speeds greater than the speed of sound.

Synonyms

• Sound barrier: The most direct synonym.

Notes on Meaning

• The "sonic barrier" is not a permanent or fixed barrier. Once an object exceeds the speed of sound (becomes supersonic), it has "broken the sound/sonic barrier," and the extreme drag forces diminish.
• The phenomenon is caused by the formation of shock waves as an object moves at transonic speeds.

Noun

1. the increase in aerodynamic drag as an airplane approaches the speed of sound