Electra Aero Goldfinch on Grass

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Anyone astonished at the brilliant short-field performance of the Electra Aero Goldfinch from a paved runway a few weeks ago will be equally surprised at its agility from a grass runway.  This eSTOL (electric Short Take Off and Landing) airplane seems to perform well even from unimproved runways. In its own press release, the company reports on the small craft’s ability to take off and land on “austere fields smaller than 300 feet that are minimally prepared.”  Citing its work with “Agile Combat Employment and expeditionary missions” for the military, explains the economy of such craft.  “Small, affordable, runway-independent eSTOL aircraft could also alleviate demand on larger, few-in-number, high performance fixed wing and rotorcraft platforms in a contested logistics environment.” That’s a 32-degree angle of climb, by the way, according to the AOPA Pilot report. More Usable Runways Aircraft like the Goldfinch and its larger commuter liner coming from Electra would open up otherwise unusable “airports” which might be nothing …

Joby Plus Hydrogen: 523 Miles

Dean Sigler Announcements, Batteries, Electric Powerplants, Hybrid Aircraft, hydrogen, Hydrogen Fuel, Sky Taxis, Sustainable Aviation Leave a Comment

Combine the Joby S4 pre-production prototype with H2 Fly’s expertise in providing clean energy, and watch world records fall. 2021 155-Mile Battery Flight Justin Paines, Joby’s Chief Test Pilot, guided the eVTOL through eleven circuits of a pre-designated route and managed 154.6 miles (248.8 km) in just 77 minutes. JoeBen Bevirt, Joby’s founder, noted his firm had, “achieved something that many thought impossible with today’s battery technology.”  Batteries have improved since then, but an alliance with a German hydrogen program makes even longer flights possible. 2024’s Hydrogen Odyssey In an even greater demonstration of its capabilities, an S4 powered by hydrogen managed a 523 mile, non-stop flight on June 24, 2024.  Powering around a circuit above Marina, California, the craft landed with 10 percent of its 40-kilogram (88 pound) hydrogen load still available. A collaboration between Joby and Germany’s H2-Fly uses much of the same system as H2-Fly’s Hy4 aircraft, a re-engineering of the G4 designed by Tine Tomažič, head …

ZeroAvia: 100 CRJ700 Motors to American

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Your Jet May Become a Prop Plane Bombardier’s (Commuter Regional Jet) CRJ700 has been in service for over 21 years, and may be about to receive a power system that will make it one of the cleanest alternatives in air travel. According to electric-flight.eu, “American Airlines plans to convert most of its CRJ700 fleet to environmentally friendly engines,” particularly ZeroAvia’s ZA2000 RJ drive train, electrified by hydrogen fuel cells. American, a shareholder in ZeroAvia, operates a fleet of CRJ 700s through its American Eagle regional airline subsidiary.  Converting the airplanes from their current General Electric CF34-8C1 to hydrogen-fueled ZA2000s will extend the lives of the planes and make them the cleanest things in the sky. Robert Isom, CEO of American Airlines, said: “To accelerate the transition of commercial aviation to a low-carbon future, investments in promising technologies, including alternative forms of propulsion, are required.” Val Miftakhov, CEO and founder of ZeroAvia, added, “At this early stage in our work together, …

Wright ASCENDS

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“The ASCEND program sets a benchmark of the fully integrated all-electric powertrain system at a power density of ≥ 12 kW/kg with an efficiency at ≥ 93%. Currently, these targets, among others, are beyond the capability of state-of-the-art technologies and will require creative thinking and innovation in the electric motor and power electronics space.”  As shown below, the large Wright motors will be available in both ducted fan jet and turboprop configurations. Wright Electric, one of eleven organizations signed up for the ASCEND Program, is pushing forward on several projects encompassing the totality of electric propulsion. WM2500 Motor Jeffrey Engler started Wright Electric in 2018, with assistance from Yates Aerospace, a firm headed by record-holder Chip Yates.  According to Wikipedia, “Two test stands were constructed: one with two 250 [kilowatt] (335 horsepower) UQM motors and two Hartzell Propellers,… the other on a 10,000 [pound] (4,500[kilogram]) trailer to be brought to high altitude test sites.”  Yates had used the same UQM …

Two Firms, Two Milestones

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Two firms, one making both conventional take off and landing (CTOL) and eVTOL (electric Vertical Take Off and Landing) aircraft, and one making a CTOL capable of root-top operation, had major milestones in the last month. Beta Technologies Beta Technologies, founded in 2017 by Kyle Clark, developed its first craft.  Ava underwent test flights and even at that point attracted its first customer, “United Therapeutics, which under founder and CEO Martine Rothblatt was looking for efficient transportation methods for organs intended for human transplant.  United Therapeutics awarded Beta a $48 million contract” Finding Ava to be complicated, the Beta turned to a simpler approach.  The resulting Alia was further developed into both conventional and eVTOL configurations.  As a conventional, if rather swoopy-looking craft, Alia has flown along a network of charging stations created by Beta to provide overnight stays for pilots and an energy source for extended trips. The Alia demonstrated its ability to transition from a lift-off using the …

DARPA ANCILLARY Fields eVTOLs

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DARPA (the Defense Advanced Research Projects Agency) has announced a competition for ANCILLARY (AdvaNced airCraft Infrastructure-Less Launch And RecoverY eVTOLs), or electric Vertical Take Off and Landing vehicles.  (That’s about as tortured an acronym as we could cram into a lead paragraph.) The goal, to develop a Class 3 unmanned VTOL aircraft capable of flying all-weather missions from ships or land, has been responded to by several industry leaders.  These have been winnowed to six “finalists” who will craft demonstration models of their respective designs. DARPA’s announcement includes the following: “The UAS would be able to launch and recover from ship flight decks and small austere land locations in adverse weather without additional infrastructure equipment, thus enabling expeditionary deployments. Unlike large VTOL systems, the small UAS size would allow many aircraft to be stored and operated from one ship creating a tactical beyond-line-of-site (BLOS) multi-intelligence sensor network capability.” The Six Finalists Phase Ia of the competition reduced the number of …

Hold Your Hydrogen – GTL Does

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GTL. Gloyer-Taylor Laboratories Inc, is a specialist composite manufacturer and it validates LH2 composite dewar tanks for use in aviation.  Recently, they shared that, “In-depth results from the successful validation testing of its small, subscale composite vacuum jacketed dewar tank with liquid hydrogen (LH2).” Think of a dewar as a large thermos bottle and you won’t be far from reality.  “A cryogenic storage dewar (or simply dewar) is a specialized type of vacuum flask used for storing cryogens (such as liquid nitrogen or liquid helium), whose boiling points are much lower than room temperature. It is named after inventor James Dewar, who developed it for his own work. They are commonly used in low-temperature physics and chemistry.” (Wikipedia) The company explained, “Test results exceeded expectations regarding holding hard vacuum, heat load, rapid chill-down and hydrogen fraction goal, leading to flight prototype fabrication. “ The company reports, “When fully isolated, the dewar tank held hard vacuum at 2.8.e-6 torr (5.414e-9 psi) for …

Two eVTOLs You Can Buy and Fly Now

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Two eVTOLs (electric Vertical Take Off and Landing) aircraft are available for purchase right now, presenting owners with potential thrills 20 minutes at a time.  One delivers wind between the toes (if you’re wearing sandals) and the other keeps you dry and even allows water landings.  In airplane economics, they offer “affordable” flying. Though different in appearance and aerodynamics, both machines have triple-redundant flight controls and intrinsic safety features that enable the manufacturers to offer them with relatively few restrictions and fairly easy training sessions. Both qualify as hover bikes/personal flying devices in the eVTOL.com listings of the over 600 aerial electric vehicles.  Both have eight motors and a battery pack that allows about 20 minutes of flight. We’ve turned to the eVTOL News from the Vertical Flight Society for many of the details on each machine. Jetson One An early video of a Jetson One dashing over a desert so enraptured Stephen Colbert two years ago he was begging …

Vaeridion: Multi Motors with One Propeller

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Emulating Otto Lilienthal Vaeridion, a German startup, plans on building a long-winged regional airliner for nine passengers that purportedly transports them on very low levels of energy. Their design philosophy, summed up on the first page of their web site, echoes the idea propounded by Otto Lilienthal, “The key to flying lies in wing design, not in more powerful engines.  Vaeridion embraces this ideal in their approach.  “As clean energy is scarce and a transition to zero emission mobility is essential, we need a paradigm shift. “Therefore, we have focused on energy-efficient aircraft design that makes a difference. Our electric Microliner can fly with the lowest energy consumption for up to 9 passengers plus crew, for distances up to 500 [kilometers].” Vaeridion’s Microliner, a slender craft carried on long, high-aspect-ratio wings, will be powered by a remarkable two-motor, single-propeller powerplant. According to ERA, the European Regional Airline Association, “VÆRIDION is accelerating the green transformation of aviation with a small electric …

Toyota’s Solid State Battery Returns

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Toyota has had an on-again off-again relationship with solid-state batteries for over a decade.  Making plans to introduce such an energy storage device seems to be a priority right now, but still one in a “near-future” way and behind Chinese competitors. This video explains the advantages and disadvantages of solid-state batteries, but be cautious in terms of its assessments.  Several manufacturers have demonstrated capabilities that overshadow some ot the complaints here, as shown in recent blog entries. Panasonic Takeover As part of its immediate plans for battery development, Toyota is taking over its 28-year battery joint venture with Panasonic. The Register reports, “For an undisclosed sum Primearth EV Energy (PEVE) will become a wholly owned subsidiary of Toyota beginning in late March in an effort to ‘strengthen its capabilities in mass-producing automotive batteries,’ according to the Japanese automaker.” Already making prismatic nickel–metal hydride (Ni-MH) and lithium-ion (Li-ion) battery packs for Toyota’s hybrid and EV brands, PEVE will expand into tackle battery …