At 09:47 AM 9/28/2016, you wrote:
Me thinks someone needs to speak to luke regarding the availability
of big wings.
<http://newatlas.com/axial-stack-battery-supersonic-electric-airliners/45537/>http://newatlas.com/axial-stack-battery-supersonic-electric-airliners/45537/
Methinks Mr Workman has never heard of aerodynamic heating when
talking of SSTs.
Yes, the pouch form factor battery is better for energy storage than
the cylindrical one.
Here's a rough guide to energy densities of various fuels/batteries.
Even allowing for thermodynamic losses in heat engines, batteries
have a long way to go to match hydrocarbon fuels.
https://en.wikipedia.org/wiki/Energy_density
For the spaceflight enthusiasts, Elon unveiled his plans for getting
to Mars this morning. https://www.youtube.com/watch?v=_sY_5vSxmLQ
Truly a BFR and a BFS. About 4 times the thrust and mass of the
Saturn V Moon rocket.
That won't be done electrically although a New Zealand/US company
called Rocket Lab is using Lithium - ion batteries to drive the
turbopumps in the engines of their small satellite launcher.
Mike
Borgelt Instruments - design & manufacture of quality soaring
instrumentation since 1978
www.borgeltinstruments.com
tel: 07 4635 5784 overseas: int+61-7-4635 5784
mob: 042835 5784 : int+61-42835 5784
P O Box 4607, Toowoomba East, QLD 4350, Australia
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