1 year ago
Saturday, June 25, 2011
The Beauty of Prandtl-Glauert Singularities
Prandtl-Glauert Singularity, but it is so very cool. I catch myself looking out the window often, when the aircraft in which I am flying is at full flaps, hoping to see this phenomenon - gotta be careful not to strain one's neck doing this, especially if the landing is experiencing turbulence or is in a Southwest 737 piloted by an former Navy airman replicating a carrier landing.
And yes, when you see this at an air show (like Paris, or San Francisco Bay) and there's a large burst cone around a fighter jet, that is often a trans-sonic phenomenon. But a Boeing 747, or a B-52 cannot reach Mach 1 (in normal or sustained operations, at least, not intentionally, or for long) and both aircraft produce some spectacular Prandtl-Glauert singularities.
Now it's time for me to do some yard work, before the ambient climbs into the triple digits here in Phoenix, and before the monsoon blows all the fallen lemon tree leaves I have into my pool.