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Results for: prandtl

November 14, 2006

From the Inbox

Several things I’d like to share coming out of my Inbox:

  • Krispy Kreme is really sending me a truckload of doughnuts. They’ve sent email on several of my blogs. Maybe we could all do some Krispy Kreme blogger meet-up? Doughnuts on me.
  • PinoyTravelBlog & PinoyTechBlog both made it to the Finals of the 9th Philippine Web Awards (PR7 links immortalized!). Awards Night will be on December 7, 2006, at the Carlos P. Romulo Auditorium, RCBC Plaza, Makati City. I think I will be in Jakarta on this date. Anybody want to go and proxy me? Free tickets.
  • Luis discovered that the newly launched Makati PNP Website was a one-man operation. Can we safely say kickbacks? The guy has a Friendster blog.
  • The domain speaknsurfcafe.com points (URL mask) to my post here about Globe’s Speak ‘n Surf. Should I thank Victor Martin Mariano for using my blog to point his domain. That’s a neat trick huh?
  • Very fine photos of USN F/A-18 fighters and their Prandtl-Glauert Clouds (c/o my reader who wants to remain anonymous). His very first contribution last July garnered total pageviews close to 17,000.
  • Shout out to Nick of Tingog.com for being very understanding. I respectfully declined his blog tag. If I did, I would have to do the same to a dozen others before him. Thanks, mate.
  • Another reader also emailed me asking for ways to determine if his GF’s blog has been added to Google Sandbox. We did a little poking around and it looks like it. Is there a definite tool to find that out? How about get a link from an old and highly trusted domain? Would that fix it?
  • Another email from a reader asks how to go about after being banned from Adsense. I explained the varying levels and suggested ways around it. This one deserves a whole post in itself.

Anybody else emailed me that I forgot to answer? Please resend them after 48 hours after the first one if I haven’t gotten back to you.

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Daily Dose
September 02, 2006

Photo of the Day: Flare Vortices

Couldn’t resist not posting this one. The same anonymous blog reader who provided a link to the picture of a Prandtl-Glauert Singularity sent me this one. (Btw, the old post is so popular in the SEs it now have close to 15,000 page views)

Flares

The United States Air Force C-17 Globemaster III Military Transport with the 14th Airlift Squadron located at Charleston Air Force Base in South Carolina has flown away after releasing flares over the Atlantic Ocean. Smoke from the flare salvo reveals a crisp, dramatic, startling, and beautiful visual of the turbulent air – including two vortices each with an “eye” – created by the C-17 Globemaster III as it flies through the air. May 16, 2006, Over the Atlantic Ocean Near Charleston, State of South Carolina, USA. {source}

Should be interesting to do some cloud photography on a nice day in Clark right? Too bad I’m going to miss 9/9 – A Culinary Tour of Pampanga 2.0.

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Photography
July 06, 2005

Photos: Prandtl-Glauert Singularity

jets

A blog reader sent me an email today and wanted to share some astonishing photos of flying jets escaping the sound barrier causing the Prandtl-Glauert singularity. As much as I wanted to give him credit for this, he asked not to be named or linked.

At speeds near that of sound, the temperature and pressure variations occurring at every speed can also be exaggerated in steady level flight. The mechanism for this near-sonic exaggeration of the temperature variations is the so-called Prandtl-Glauert singularity which requires that pressure and temperature perturbations approach ± ¥ as the flight speed approaches the ambient sound speed.

More pictures with captions here, here, here and here.

I am no physicist, but these pictures are awesome. :)

[tags]jets, airplane, wings, flight, sonic speed, flying[/tags]

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Photography