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Archive for May 2014

San Francisco: One of the Greenest Cities in the World

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San Francsco Hill_Mike KThe following guest post is by Anne Staley, an environmentalist who likes to express her thoughts and beliefs through the written word. Her motto in life is to better the lives of others through the knowledge she shares. She loves nature and urges her readers to go green. She shares her thoughts through creative writing and blogs. Her email is annestaley19@gmail.com

I’ve been to San Francisco many times. But everytime I set foot inside the city, I’m amazed at its beauty, freshness and vibrancy. Whenever I return, my love for the city is renewed.

What’s not to love about San Francisco? It has tolerant residents; great weather; the rolling hills that surround it; the quaint cable cars that crisscross the city. The charming Al-fresco cafes; Fishermen’s Wharf; Golden Gate Bridge; its buzzing nightlife, thriving art and culture scene, and its rich sporting tradition. Read the rest of this entry »

Written by William DiBenedetto

26 May, 2014 at 8:36 am

Airbus electric aircraft flies

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E-Fan Technology Demonstrator (2)_loRecently I wrote about Boeing’s all-electric satellite, which might launch later this year. Not to be outdone, apparently, Airbus Group flew the first all-electric aircraft late last month, called the E-Fan.

The E-Fan is an all-electric trainer aircraft made of composite material.

Leaving jet fuel behind means there is slight hitch: at the moment the the plane can fly for about an hour on a single charge. In any case this is a pretty big deal, because the largest aerospace and defense company in Europe and the world’s leading commercial aircraft manufacturer is backing it, is planning to build the trainer in series and is also planning to use what it learns to eventually develop a regional passenger model. Read the rest of this entry »

Written by William DiBenedetto

20 May, 2014 at 4:03 am

Boeing putting something electric in space

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??????All-electric satellite propulsion is getting a boost from Boeing, which says it is “on track” to deliver the world’s first all-electric xenon-ion propulsion satellites in late 2014 or early 2015 after meeting key production milestones on its initial 702SP (small platform) satellites.

Boeing announced that it has completed static qualification testing, verification and assembly of the primary structures for 702SP inaugural customers ABS and Eutelsat, meaning the satellites are well on their way to launch. The initial contract for the satellite was signed in 2012 between Boeing and Satmex. Eutelsat acquired Satmex in January 2014.

The four 702SP communications satellites will launch in pairs, and once in orbit, they will be entirely powered and propelled by electricity, rather than relying on rockets. The first two are scheduled for launch aboard a single SpaceX Falcon 9 rocket early next year. An all-electric satellite dispenses with heavy chemical propulsion and uses electric propulsion not only to maintain itself stably in orbit over 15 years, but also to raise the satellite from where it is dropped into orbit by its carrier rocket to its final destination in geostationary orbit. Read the rest of this entry »

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