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Transonic

The term "transonic" describes a speed regime in fluid dynamics, particularly in aerodynamics, where the speed of an object, such as an aircraft, is near the speed of sound. Specifically, it typically refers to speeds ranging from approximately Mach 0.8 to Mach 1.2 (where Mach 1 is the speed of sound). At these speeds, air flow around the object includes regions where the air is both subsonic (slower than sound) and supersonic (faster than sound). This creates complex aerodynamic phenomena, including shock waves, which significantly increase drag and can affect stability and control. Designing aircraft for transonic flight presents significant challenges due to these complex aerodynamic effects.

Transonic meaning with examples

  • The initial design of the fighter jet struggled to achieve a stable flight configuration in transonic conditions. This led the engineers to modify the wing design after testing, resulting in significant changes. Their main objective was to control the formation and movement of shock waves to reduce aerodynamic drag and improve performance during the transition into and out of transonic flight regimes, this proved to be a critical turning point for the jet's design.
  • Engineers employed wind tunnel tests with advanced instrumentation to carefully study the airflow patterns around the experimental airfoil during transonic speeds. The focus of the experiment was how the wing shape could delay shock wave formation. Data gathered contributed to understanding the effects of compressibility on lift and drag. The goal was to enhance flight efficiency and potentially reduce fuel consumption at these critical speeds.
  • The pilot increased the aircraft's speed, noticing the onset of buffeting and control surface vibrations indicating it was entering transonic speeds. Adjustments were made to flight controls to maintain a stable altitude. Precise maneuvering was needed to navigate the turbulent air flow and prevent potentially dangerous conditions. The pilot then initiated the afterburner to quickly push past the critical speed zone.
  • Researchers are exploring new wing designs, such as supercritical airfoils, specifically to improve performance within transonic ranges. Computational fluid dynamics (CFD) simulations are used to predict aerodynamic behavior. The aim is to minimize shock wave intensity, reduce drag, and therefore enhance aircraft efficiency. The overall objective is to make aircraft designs less impacted by transonic flight profiles, increasing efficiency.

Transonic Crossword Answers

5 Letters

SONIC

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