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Dean Sigler

Dean Sigler
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Dean Sigler was a technical writer professionally for 34 years, with a liberal arts background and a Master's degree in education. He writes the Sustainable Aviation and CAFE Foundation blogs. He has presented at several symposia and at several Experimental Soaring Association workshops. Part of the Perlan Project, he is a private pilot with a great love for low and slow aircraft.

E-Hawk in Paradise

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A small group of students in a well-equipped private school have constructed an electric Experimental/Amateur-Built ultralight aircraft. They have done a spectacular job performing...

Batteries Included

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Before the eXenos, Gabriel DeVault’s first electric aircraft was the eGull.

Electric Dreams

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Pipistrel’s gift to general aviation.

Electric Triplanes, Personal Sky Taxis, and Urban Mobility beyond Belief

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The Third Annual Sustainable Aviation Symposium again promises to be the premier gateway to innovation, mind-expanding discussions, and a glimpse into the future that...

Prandtl Wing, Goldschmied Fuselage

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Attendees at the 2017 Sustainable Aviation Symposium (held in San Francisco, California) could be forgiven their startle reactions when they confronted a science-fiction like...

CAFE Electric Aircraft Symposium, Part Three

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The last six speakers closed out the afternoon session with aircraft, regulations, and ways to manage all the new traffic. Mark Moore, NASA, Silicon Valley...

CAFE Foundation Electric Aircraft Symposium, Part Two

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John Langford: Aurora Flight Sciences and the Lightning Strike Dr. Langford opened the second day with background on strides his firm has made in creating...

Convergence at CAFE’s Electric Aircraft Symposium

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The 10 Annual CAFE Electric Aircraft Symposium, held at the Marriot San Francisco Airport on May 19 and 20, visited topics of electric propulsion,...

Pioneers and New Directions

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At the Sustainable Aviation Syposium, several speakers presented talks on controlling the coming wave of unmanned aerial systems traffic management (UTM). Part 3 of our coverage.

Motors, Batteries, Solar Cells and Hydrogen – Power for Future Flight

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While we're still waiting for the battery breakthroughs that will let us fly infinite distances without recharging, several motors await energizing from whatever source is available. Speakers at the First Sustainable Aviation Symposium included solar energy, new battery chemistries, fuel cells and hydrogen, or even the regenerative power of the air itself in their presentations.

In Case You Missed it

RANS S-19

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When new aircraft from two very different designers, in this case Randy Schlitter and Richard VanGrunsven, surface with considerable similarities, consensus about basic design tenets must be blowing in the wind. Certainly Light Sport regs do constrain performance considerations, but human factors are more up for grabs, and that’s where one or another design can truly shine; by Marc Cook.

Jabiru Dipstick Removal Tool

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The oil quantity in my Jabiru 2200 is just a little over two...

Modifying Tools

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Building an airplane in the mountains has its downside. The nearest tool store is...

Automotive Plugs in Lycomings

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Tips, tricks—and tools.