ZeroaviaZeroAvia Bets On Hydrogen For Electric Air Travel
Pro's and con's...
Hydrogen powered aircraftThis means that for the same range and performance (ignoring the effect of volume), the hydrogen aircraft would have about one-third of the fuel weight. For a Boeing 747-400 type aircraft, this would reduce the takeoff gross weight from 360,000 to 270,000 kg (800,000 to 600,000 lb). Thus, the performance of a hydrogen-fueled aircraft is a trade-off of the larger wetted area and lower fuel weight. This trade-off depends essentially on the size of the aircraft.
That's why I said I was going to get popcorn Just in case anyone tried it...Pontius Navigator wrote: ↑Sun Feb 09, 2020 10:50 amLlondel, the airship used hydrogen as an air displacement. Helium would work too but marginally less effective. As a fuel however only hydrogen, which is not an inert gas would work.
If the ship produces enough electrical power utilizing solar energy, the cryogenic hydrogen and fuel cells then it would be possible to have a small on board electrolizer on board to produce additional hydrogen which could be liquefied by a regenerative cooling system, although the process would be extremely power inefficient and would probably need to be plugged into the grid in port.Pontius Navigator wrote: ↑Sun Feb 09, 2020 11:08 amCutting to the detail, it will have two supercooled 28 tonne liquid hydrogen tanks. Now how is he going to get the liquid hydrogen? How many ports will have a liquid hydrogen facility? Will he have to subsidise the infrastructure too?
MagniX set for first flightThe world’s largest all-electric aircraft is about to take to the skies for the first time.
The Cessna Caravan, retrofitted with an electric engine, is expected to fly for 20-30 minutes over Washington state in the US on Thursday.
The plane can carry nine passengers but a test pilot will undertake the inaugural flight alone, cruising at a speed of 114mph (183km/h). The engine maker, magniX, hopes the aircraft could enter commercial service by the end of 2021 and have a range of 100 miles.
Technically you are right Ian. An electrically driven device is driven by a motor.
I fell into my own trap didn't I?TheGreenGoblin wrote: ↑Wed May 27, 2020 1:47 pmTechnically you are right Ian. An electrically driven device is driven by a motor.
I suppose that it can be argued that a generator is a driven motor as opposed as a motor that drives something else but yes you have opened up a can of worms and the right hand rule does apply to generators... (if we get really technical we can look at how the armatures are wound too)...