H2Fly Achieves HEAVEN’s Goal

Dean Sigler Announcements, Electric Powerplants, Fuel Cells, GFC, hydrogen, Hydrogen Fuel, Sustainable Aviation Leave a Comment

H2Fly has an historic aircraft in its fleet, the HY4, as part of the HEAVEN program to, “Demonstrate the use of liquid, cryogenic hydrogen in aircraft.”  Originally the G4, the craft won the NASA Green Flight Challenge in 2011, posting a passenger mile per gallon efficiency of 403.5 – equivalent to driving your loaded Prius from San Francisco to Los Angeles on under four gallons of fuel.  Resurrected as the HY4 and flown on gaseous hydrogen, the craft has been reconfigured to fly on liquid hydrogen, expanding its range significantly. According to the HEAVEN program, “The hydrogen-electric ‘HY4’ demonstrator aircraft took off from Maribor, Slovenia, and saw safe and efficient operation throughout multiple flight tests.”  Announced September 7, these were the first piloted flights of a liquid hydrogen fueled aircraft.  Four flights, including one that lasted over three hours, “Lay the foundation for long-range, emissions-free flight, with liquid hydrogen doubling the range of the HY4 aircraft to 1,500[kilometers], compared to …

1,000 Kilometers With an Electric Microlight

Dean Sigler Batteries, Electric Aircraft Materials, Electric Powerplants, Sustainable Aviation 2 Comments

Your editor is publishing this multi-country adventure from Daniel Ramsier recounting of his 1,000 kilometer trip in an electric microlight, with some of his outstanding photographs.  It’s a truly epic outing that shows ingenuity, great engineering, and a resolute spirit combined to show how much can be accomplished with a very small material involvement.  The story highlights Paul MacCready’s advice to do more with much less. Regardless that it was leisurely journey, averaging 25 kilometers (15.5 miles) per day, it was still a test of Daniel’s hardihood and his craft’s reliability. Yes, it’s definitely possible to fly and travel “electric”. Taking off from Gruyère (LSGT) in Switzerland on July 15, I arrived in Kyjov in the Czech Republic in 40 days and 22 legs, invited by Marek Wolhard, a paraplegic 3-axis ultralight instructor pilot who had followed @handiflight around the world. My nano-trike was developed by Ales Hubacek of skyjam-aircraft.com in Zurich. Light and strong, made entirely of titanium, its very …

A Race Between an Elektra Solar Trainer and a Lucid Air Sedan

Dean Sigler Announcements, Batteries, Electric Powerplants, Sustainable Aviation Leave a Comment

A race last week between an Elektra Solar Trainer and a Lucid Air sedan shows the great strides made in electrification for both cars and airplanes. Electrive.com reports, “A special race went down this week in Germany, setting an electric car against an ultra-light electric aircraft in the ‘E-Flight Challenge 2023.’” This was a relatively high-end affair, as is often true at the onset of new technologies replacing more well-established ones.  The Lucid Air sedan comes in several levels of performance and trim, with the least expensive starting at $78,900.  The “Pure” rear-wheel drive features a single 480 horsepower motor and is claimed to travel up to 410 miles on a single charge.  In all-wheel drive form, it costs $83,900 and manages 384 miles on a single charge of its 92 kilowatt-hour battery.  Pures weigh around 2,100 kilograms (4,620 pounds) A great deal lighter at around 1,332 pounds maximum takeoff weight, the Elektra Solar Trainer flies on a mere 12 …

ZeroAvia Turbo Charges a Fuel Cell

Dean Sigler Announcements, Electric Powerplants, Fuel Cells, hydrogen, Hydrogen Fuel, Sustainable Aviation Leave a Comment

Turbo chargers were an early method of increasing power at altitude and that ZeroAvia is crafting for modern electric, fuel-cell powered aircraft. Mechanical Turbochargers During WWII, your editor’s father was a crew chief and occasional flight engineer on C-47’s, B-17’s, and B-24’s.  The bombers had turbo-charged engines to increase power as noted below. (This is just part one of three training films, all on YouTube, giving some indication of the difficulties pilots faced in pre-electronic times.) The flight manual for the B-17 includes the following notes on the turbochargers. “The B-17F has four 1200 Hp Wright Cyclone Model R-1820-97 engines of the 9-cylinder, radial, air-cooled type with a 16-to-9 gear ratio. “Each engine has a turbo-supercharger to boost manifold pressure for takeoff and maintain sea-level pressure at high altitude.”   B-24’s and other similar craft had the same type of system.   (ZeroAvia’s rough equivalent is much quieter and a loss less smoky.) The manual notes the F models had manual control of …

Silicon and Sugar Make Better Batteries

Dean Sigler Batteries, Electric Powerplants, hydrogen, Solar Power, Sustainable Aviation Leave a Comment

Two groups of researchers in South Korea and America have added silicon and sugar as ways of gaining more energy from two different types of batteries. The 10X Battery at Last? Researchers at Pohang University of Science & Technology (POSTECH) in South Korea have developed a “layering-charged, polymer-based stable high-capacity anode material.”  POSTECH professors Soojin Park (Department of Chemistry) and Youn Soo Kim (Department of Materials Science and Engineering) and Professor Jaegeon Ryu (Department of Chemical and Biomolecular Engineering) of Sogang University think their discovery could increase current electric vehicle range “at least 10-fold.” As noted in this blog many times, the idea of a 10X battery has been a matter of intense research from Yi Cui at Stanford and his research partner Jaephil Cho in South Korea, along with John Goodenough at Rice University and Jeff Dahn at Canada’s Dalhousie University – among others. Silicon and Polymeric Benders One of the bigger problems with using silicon in a battery …

ZeroAvia to Supply Surcar with Hydrogen Floatplanes

Dean Sigler Announcements, Electric Powerplants, Fuel Cells, hydrogen, Hydrogen Fuel, Sustainable Aviation Leave a Comment

An Island-Hopping Customer Surcar Airlines is an enterprise based in the Canary Islands which hopes to serve its island routes with ZeroAvia-motored, hydrogen-fueled DeHavilland Twin Otters.  But not right away. Starting with conventionally-powered turbine twins, Surcar is working on a process, “Based on starting something totally new and that touches so many sectors at the same time. “Today we confirm that we have signed an agreement with@zeroavia to fly its ZA600 hydrogen-electric engines in order to operate ecological flights. “We will operate Twin Otter seaplanes updated with the ZA600 propulsion system on our sightseeing flights.”  This 600 kilowatt (804 horsepower) system is now being tested and certified for aircraft seating nine to 19 passengers. “This implies the commitment to lead the electrification of aviation in the Canary Islands and achieve zero-emission flights in the archipelago.” This ambition drives the airline to follow, and possibly lead in the European Union’s aim to, “…Reduce greenhouse gas emissions by 55 percent by 2030 …

Dreaming of Big Electric Airplanes: CATL and COMAC

Dean Sigler Announcements, Batteries, Electric Powerplants, Hydrogen Fuel, Sustainable Aviation Leave a Comment

CATL and COMAC are dreaming of big electric airplanes.  The first company has made some recent battery breakthroughs, and the second has recently brought China’s biggest jet airliner to market. CATL. Contemporary Amperex Technology Ltd., is a behemoth.  According to TheInformation.com, “The company spent $124 million to acquire a lithium mine in China’s Jiangxi province, an operation that would feed into a $2.1 billion battery factory it was building nearby. And in October, it spent $3.6 billion to buy 25-percent of a cobalt operation in the Democratic Republic of Congo. This year, CATL has spent $1 billion on a lithium brine operation in Bolivia, $885 million for lithium rights in China’s Xinjiang province and $920 million for lithium rights in the Chinese province of Sichuan.” This globe-girdling spate of acquisition indicates the seriousness of China’s move to dominate world battery markets.  With recent news of CATL’s 500 Watt-hour-per-kilogram cells and their possible use in large aircraft, the need to compete …

Wisk Wows at Oshkosh

Dean Sigler Announcements, Batteries, Electric Powerplants, Sky Taxis, Sustainable Aviation Leave a Comment

A Wisk Cora flew autonomously several times along the length of the 8,002-foot main runway, a first at the Experimental Aircraft Association’s 2023 AirVenture in Oshkosh, Wisconsin.  The July 25 event was, “The first-ever public demonstration of a fully autonomous eVTOL fixed-wing airtaxi,” according to the company. Under development and appearing in different configurations over the last several years Wisk’s aircraft have flown in Hollister, California and in New Zealand.  Cora represents the fifth generation of such vehicles.  Wisk, a Boeing partner, is not stopping there. The flight from another perspective, with an explanation of the noise on the soundtrack: “The noise is the 787 APU, not the @WiskAero. ‘  Note how the noise drops as the auxiliary power unit shuts down, with crowd noise competing with the Cora for dominance. https://twitter.com/i/status/1684023361804943360    A Future with Four Seats The latest iteration for the firm is their sixth-generation craft, simply called Generation Six.  It’s a four-seater, with ample room for passengers and …

Pie in the Swiss Sky

Dean Sigler Announcements, Batteries, Electric Aircraft Components, Electric Powerplants, Sustainable Aviation Leave a Comment

Pie Aeronefs is a small firm in Switzerland, specializing in battery-powered aviation, and close to flying its single-seat air racer, the UR-1 Devil.  We reported on this machine in 2021 at an early stage in its development, and now it’s going to be available as a kitplane.  Adding to a bumper crop, their UG-2 Bullfinch will also be available as a kit. Pronouncing that their aircraft are all zero-emissions machines, Swiss made, and innovative, Pie Aeronefs has this manifesto on its home page: “Pie Aeronefs is a Swiss all-electric aircraft manufacturer. “Through distributed electric propulsion, our zero carbon emitting airplanes shall surpass the performance of conventionally powered competitors. “Thanks to an innovative design, our aircraft are optimized for the electric energy system.” UR-1 Devil Supplied as a kit that the company says can be completed in 800 hours, the racer features carbon, aluminum, wood and electronics components, and “access to all technical data and assembly diagrams.”  Customers have to supply …

Joby Gets Certified, Stock Jumps

Dean Sigler Announcements, Electric Powerplants, Sky Taxis, Sustainable Aviation Leave a Comment

“Joby Aviation has received a Federal Aviation Administration Special Airworthiness Certificate for the first aircraft built at its pilot production line in Marina, California, allowing Joby to begin flight testing of its first production prototype” according to Dan Carney’s reporting in Design News. Having visited the Woodpecker Ridge development site and written about Joby Energy and Joby Aviation since 2010, your editor has seen remarkable progress in the company.  JoeBen Bevirt had about a dozen engineers working in his design studio then, and that has steadily grown to around 1,300 employees today spread over several workshops and administrative offices along the central California coastline. What is This Thing Called, Love? From the paperwork in the Federal Register detailing Joby’s application for a Notice of proposed airworthiness criteria, Joby Aero, Inc. is asking for guidance on its Model JAS4-1 Powered-Lift. Since the craft is not described as an airplane, helicopter or with other terminology, the Register includes this note: “The Joby …