‘Science and Technology’ Category

My hometown as seen from Space, August 23

October 16th, 2013

During the government shut down, no part of NASA’s website is available. In the meantime, Astronaut Karen Nyberg has posted this image of the Great Lakes on Twitter.

Presque Isle is clearly visible (circled), Chautauqua Lake is the skinny body of water directly below:

The tiny bump to the west of the peninsula is Walnut Creek (arrow), the boomerang-shaped lake to the left is the Pymatuning Reservoir on the Ohio/Pennsylvania border:

Categories: Erie PA, Science and Technology, Web finds
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Flying Eagle’s Point of View

September 20th, 2013

I try not to post too many links, but this is worth sharing.

YouTube video of a flying eagle’s point of view.

Curious screen capture of a man sitting in the field:

Categories: GoPro, Science and Technology, Web finds
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Endeavour – more photos and L.A Times time lapse video

October 17th, 2012

L.A. Times has created a time lapse video of the shuttle.

Many photos have been added to the NASA Flickr account. Jason and I were caught aerial photo below (bottom right, Jason in red shirt leaning on orange bike, me in light blue). We can’t find Branden in this image.

Photo via NASA Flickr.

Me on left in light blue, Jason on right in red, leaning on his new orange Handsome XOXO.

Categories: Science and Technology, Southland
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Space Shuttle Endeavour in Inglewood, CA

October 13th, 2012

A few photos from our bike ride (strava link) to see the shuttle in Inglewood.

I have uploaded many more photos Google+.

Categories: Science and Technology, Southland
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The wheels of the mars rovers

August 18th, 2012

A tour of JPL in 2005 left me charmed by the Mars Exploration rover wheel (the Spirit and Opportunity rover design). The 26 cm diameter wheel is milled from a solid block of aluminum. The black surface is anodized for added surface protection. Why black, I don’t recall. The spiral flexures (spokes) add a little suspension.

(image source)

The new wheel on Curiosity is twice as big at 50 cm. The tread is one piece of aluminum attached to a hub with 6 individually-fastened titanium flexures. The flexures extend axially from the hub, curve back towards the rim maintaining a radial profile, and finally bend almost tangentially to attach to the rim similar to the spirals from before. 

(image source)

(image source)

The holes in the wheels leave impressions in the soil that allow the scientists to measure distance. They also spell J-P-L in Morse code.

Both wheel designs are inspiring, and have me thinking of applications for human use. Shock-absorbing bicycle wheel or hub? Probably not, but what about uses other than wheels?

(Image source) Left to right: Exploration (Spirit/Opportunity), Sojourner, and Curiosity wheels.

More info on the Exploration wheels on NASA’s website here and on Curiosity’s wheels here.

Categories: Science and Technology
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