Terrafugia’s TF-2

Dean Sigler Batteries, Electric Powerplants, Hybrid Aircraft, Sky Taxis, Sustainable Aviation 0 Comments

Terrafugia, unabashedly calling its vehicles “flying cars” in many of its public pronouncements, has floated a concept that is a serious departure from their two previous designs.  The TF-2 will be the equivalent of a shuttle bus, but with an aerial means of making a longer haul than mere in-town hops. Started by MIT graduates, many of them members of the rocketry club, Terrafugia has managed to garner an enormous number of media hits.  It even became a possible Christmas gift in the 2010 Hammacher Schlemmer Christmas catalog. It flew its Transition before the crowds at AirVenture in 2013, and was able to obtain certification as a Light Sport Aircraft since then, but with a slightly higher than original LSA …

Eraole in Flight – Further and Higher

Dean Sigler Biofuels, Diesel Powerplants, Electric Powerplants, Hydrogen Fuel, Solar Power, Sustainable Aviation 0 Comments

Eraole is a unique machine in a sea of unique craft.  Powered by a combination of sunlight, Total biofuel, and hydrogen, Raphael Dinelli’s tandem-winged biplane has been under development for many years.  With it, Raphael hopes to cross the Atlantic in 2019, Duplicating Charles Lindbergh’s 1927 flight at about half the Spirit of the Spirit of St. Louis’s speed. Eraole’s first flight took place in 2016.  The video will allow you to compare its look then with its changed appearance today. Changes of Plane, Changes of Plans Dinelli’s original plan for the flight included the use of an algae-derived fuel to run Eraole’s engine/generator.  As reported by La Tribune, though, “For four years, the Ocean Vital Foundation conducted research with …

Volocopters to Hover Over Singapore

Dean Sigler Announcements, Electric Powerplants, Sky Taxis, Sustainable Aviation 0 Comments

Helena Treeck from Volocopter sent the following message this morning: “Bruchsal/Paris/Singapore, October 2018 – Volocopter, the pioneer in urban air mobility, announced today during Autonomy – the Summit of Urban Mobility in Paris, that they will perform a next set of inner urban flight tests in Singapore. The series of test that are scheduled to take place in the second half of 2019 are supported by the Ministry of Transport (MOT), Civil Aviation Authority of Singapore (CAAS), and Economic Development Board (EDB).” Already undergoing testing in Germany and Dubai, Volocopter’s 2X appears to be the company’s flagship for continuing development.  The following video (in French) intercuts a representative explaining the benefits of the Volocopter with images of its public flight …

UAVOS Flies ApusDuo HAPS

Dean Sigler Electric Powerplants, Solar Power, Sustainable Aviation 0 Comments

UAVOS, located in the midst of surrounding Google properties in Mountain View, California, sells a wide variety of goods and services related to the unpiloted aircraft world.  One of their biggest creations so far, the ApusDuo High Altitude Psuedo Satellite (HAPS) ran through a full series of tests.  The 10-meter span prototype vehicle will test control algorithms, including takeoffs and landings and verify HAPS aerodynamics.  According to UAVOS “Test flights fully confirmed the flight characteristics of the UAV.”   This is good news, since their next step will be to make at least a 15-meter wing (49.2 feet) wingspan version.  That will rely even more on “Control of roll, pitch, v-shape and slip…due to a controlled change in the angle of …

Communicating Between Ducted Fans and the Wing

Dean Sigler Electric Powerplants, Sustainable Aviation 0 Comments

Aircraft quite often seem to get designed as an assembly of separate components, wings an entity unto themselves, engines or motors something attached to the fuselage or wings, and not always seen as a set of matched components until final assembly.  Quite often, different components are compromised from their optimal shape or structure because of the need to integrate them with other parts of the craft.  One group of researchers is finding ways to even cause components to begin communicating among themselves. Some parts, such as engines or motors, are hung on the wing or fuselage as replacements for earlier design variants.  The new powerplants may provide additional power, but they may also interfere with the overall performance and handling …

A Triple-Redundant Powerplant

Dean Sigler Electric Powerplants, GFC, Hybrid Aircraft, Sustainable Aviation 0 Comments

Your editor saw this Tweet from Frank Anton, head of Siemens eAircraft: FrankAnton @Frank_E_Anton Oct 9 Hybrid-electric with multiple redundancy: three independent drive units in one engine block. Should a module fail, flight can continue with two remaining components. Scalewings engine exists as concept, development work expected to take three years. This caused your editor to go quickly to the ScaleWings home page, where a beautiful P-51 Mustang in 70-percent scale dazzles.  The airplane is available in Ultralight, Light Sport Aircraft, and Experimental configurations using engines from the UL and Rotax lines up to a Chevrolet LS300, with a supercharged variant offering up to 600 horsepower.  Their brochure, in German or English gives a great overview of the features of this carbon-fiber …

Zunum Picks Safran Helicopter Engine for ZA10

Dean Sigler Diesel Powerplants, Electric Powerplants, Hybrid Aircraft, Sustainable Aviation 0 Comments

Ashish Kumar, CEO of Zunum Aero, announced that his firm will partner with Safran Helicopter Engines to use that firm’s Ardiden 3Z engine as the powerplant for Zunum’s 10-passenger regional airliner.  He lists the advantages this installation will provide. “Our ZA10 aircraft, under development for entry in the early 2020s, will be powered by dual power sources: propulsion batteries, and a Safran turboshaft in the 1,700 to 2,000 shaft horsepower (shp) Ardiden range.  This new model, the Ardiden 3Z, will be used as a hybrid power source achieving demanding cost, efficiency and uptime requirements.  It will be coupled with an electric generator, and the integrated turbo-generator will deliver 500 [kilowatts] of electric power to supplement propulsion batteries on key stages …

Oxis Energy Hits a Lithium-Sulfur Battery High

Dean Sigler Batteries, Electric Powerplants, Sustainable Aviation 0 Comments

That near-mythical 10X  (of current lithium cells’ energy density) battery hangs out there on the distant horizon, promising automobiles that can exceed 1,000 miles range, or light aircraft that can carry four at Cessna-like distances.  Right now, we have two-place trainers good for an hour’s laps around the circuit, and the hope for improvements soon.  OXIS Energy, a UK-based company, has achieved 425 Watt-hours per kilogram at the cell level, and looks to go higher in the near future. Lithium-Sulfur – A Worthy Alternative? Promoters of lithium-sulfur batteries suggest their products have several desirable characteristics and performance boosts that may transcend the limits of lithium-ion cells.  Sion Power, for instance, claims availability of their Licerion battery with an even better …

SmartFlyer is Looking Smart

Dean Sigler Batteries, Electric Powerplants, Hybrid Aircraft, Sustainable Aviation 0 Comments

Only a design concept just a few years ago, the SmartFlyer hybrid aircraft is swiftly approaching full-fledged reality.  CEO Rolf Stuber started the project and has been joined by Daniel Wenger, who shares design honors with him; and eleven others with a dazzling array of skills and degrees.  Every member of the team has built, flies or has flown in everything from gliders to “heavy” airliners. The team’s goal is to craft a “proof of concept” airplane which will fly by 2021. Facebook Updates Recent Facebook photographs show a nose section with a Rotax 914 engine driving a special generator, yards of orange cable connecting the big pieces, and a set of formers for what will probably be the fuselage …

Sustainable Aviation Symposium – Free on YouTube!

Dean Sigler Electric Powerplants, Hybrid Aircraft, SAS, Sky Taxis, Solar Power, Sustainable Aviation 0 Comments

The 2018 Sustainable Aviation Symposium was a master class in aircraft design, electric and hybrid power, and the strategies that will make green flight a reality in our near and distant futures.  The considerable knowledge imparted in that gathering is now available for your education and enlightenment on YouTube. Better than (Most) Cat Videos Go here to see the entire 2018 Symposium program, complete with links to a video of each speaker’s talk. Or go here for the library of presentations on YouTube. Either link provides high-quality video of the 20 presentations from this year’s Sustainable Aviation Symposium.  You will see all the slides in each presentation and hear each presenter’s eloquent exposition.  These range from the simplest of garage-based …