Regarding computing as a straightforward routine, some theoreticians still tend to underestimate its intellectual value and challenge, while practitioners often ignore its accuracy and overrate its validity. C. K. Chu, Columbia University, 1978

# Category Archives: Aeronautics

## Foundations of Turbulence

The mathematical formulation of the problem of homogeneous turbulence is this: Given an infinite body of uniform fluid in which motions conform to the equations and, and given that at some initial instant the velocity of the fluid is a random function of position described by certain probability laws which are independent of position, to …

## A Hypersonic Transport Concept

## UIUC Applied Aerodynamics Group

https://m-selig.ae.illinois.edu/ads.html The UIUC has an amazing airfoil database containing coordinates and other quick aerodynamic information.

## HiFiLES High Fidelity Large Eddy Simulation

https://hifiles.stanford.edu/ My students and myself were impressed with the Stanford University release of HiFiLES, a large-eddy simulation solver for turbulent flows. We were able to use it successfully in our Office of Naval Research Grant. In fact, our modifications were released for free with an in-built acoustics solver. These codes are free of charge to …

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## Leonardo da Vinci

## Aerospace Verses Mechanical Engineers

Mechanical Engineers use \(y\) as a coordinate axis at the ground pointing towards the sky. Dissimilar, Aerospace Engineers use \(y\) as a coordinate fixed to a flight-vehicle pointing towards the Earth. This is why Mechanical Engineers have their feet on the ground, and Aerospace Engineers have their heads above the clouds.