In nature, almost all turbulent flows are invariably ‘unsteady‘. What is prescribed as ‘steady‘ is the statistical averaged variable, provided that the flow has an energy equilibrium condition. In such cases, one correct formulation is the steady RANS. Other pure unsteady statistical formulations exist, such as unsteady RANS (URANS). In a specific flow problem, viz. flow around a…
Category: Learn Blogs
Morphing Mechanics
‘Morphing mechanics’ is the natural confluence of art, science, engineering and philosophy. It has been a continuous endeavour to mimic the natural flyers by human civilization in the last hundred years. We have progressed fast, right from the Wright brothers flight at Kitty Hawk in 1903 to hypersonic flights in the 21st century. Yet, there…
Early swept-wing tailless aircraft concepts – A historical perspective.
The 1920’s and 1930’s in Germany were a time of great innovation in aircraft and propulsion design. This is due to a few factors, post World War-I politics, German government support and the coaching by old aeronautical geniuses. During most of the 1920’s Germany was prohibited from developing or manufacturing military aircraft. This led the…
Investigation of various ‘Morphing’ strategies.
The ‘Morphing’ in aerospace vehicle studies have focussed on aerodynamic performance, where it was demonstrated that morphing has potential advantages over its conventional counterparts. The superiority of the morphing idea primarily focussed on savings in fuel consumption, range, and endurance improvement, cost and logistics savings, reduction in actuator energy, and maneuverability superiority. There have been…