Jetstream Cargo Gliders – Colorado to China in Three Days

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

Just as Richard Starke was explaining to Experimental Soaring Association attendees at this year’s Western Workshop how his proposed stratospheric cargo glider program would work, some multi-tasker checking his tablet shouted, “Perlan’s reached 76,000 feet!” Richard’s concept of launching cargo gliders that would ride the jet stream between continents was suddenly validated before an audience that a few minutes before might have been dazzled and even skeptical of his proposal.  Perlan’s tows behind the recently recruited Grob Egret turboprop towplane made 10,000 feet in 10 minutes a time-to-climb reality, and tows to 40,000 feet allowed rapid exploration of developing air masses over the Patagonian mountains. The idea of flying large, cargo-carrying gliders goes back to at least Word War Two, …

The Lightest Material Encapsulated in the Sheerest

Dean Sigler Fuel Cells, Hydrogen Fuel, Sustainable Aviation 0 Comments

Scientists may have come up with a process to wrap hydrogen-trapping magnesium with an atom-thick layer of graphene, setting up a scenario to store hydrogen in a weight-saving way. Hydrogen seems to be a perfect fuel, but like all perfect things, an unattainable one.  Its lightness and smallness make it hard to contain, and pressurization required to store it adds weight to its containers.  Flying since 2009, the Lange Antares DLR-H2 has been a test bed for hydrogen-fueled flight.  The DLR (Germany’s NASA) explains, “The developers selected a new, larger pressure vessel that, at 350 bar (5,076 pounds per square inch), now holds five kilograms of hydrogen to replace the previous tank in the external pod on the starboard wing, …