How not to build a ship: the USS Ford

Re:How not to build a ship: the USS Ford by LeifCarrotson on Wednesday June 07, 2017 @07:20PM (#14510652)

The wiki says it's 484 megajoules, delivered in 3 seconds. That is equivalent to 134 mega-watthours,

For a potentially more useful arbitrary metric, that's a bit less than two Model S batteries. Except it delivers all the energy in seconds, and charges in 45 seconds, and isn't limited to a few hundred charge cycles. It's a kinetic flywheel storage system, but I wonder if it would be built today using a giant lithium-ion pack (many Tesla PowerWalls, basically) or a supercap array.

[ Parent | on HN ]

Re:How not to build a ship: the USS Ford by maxerickson on Wednesday June 07, 2017 @07:37PM (#14510738)

134 kilowatt-hours.

1 megawatt-hour is 3600 megajoules.

[ Parent | on HN ]

Re:How not to build a ship: the USS Ford by LeifCarrotson on Thursday June 08, 2017 @10:38AM (#14514463)

Thank you for the correction.

It seems like this sort of energy could be very feasible with supercaps, lithium-ion, or lead acid, at that level.

[ Parent | on HN ]

Re:How not to build a ship: the USS Ford by maxerickson on Thursday June 08, 2017 @12:09PM (#14515147)

Like you said in your other comment, the energy is a couple Tesla batteries. It's the power and cycling requirements that are hard.

[ Parent | on HN ]

Re:How not to build a ship: the USS Ford by NikolaeVarius on Wednesday June 07, 2017 @08:47PM (#14511055)

Doubt it. A large purpose of this kind of system is to make it non explosive,

[ Parent | on HN ]

Re:How not to build a ship: the USS Ford by Robotbeat on Wednesday June 07, 2017 @09:14PM (#14511167)

Flywheels fail by basically exploding.

[ Parent | on HN ]