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Forum: Tech Log

3rd Apr 2012, 18:39

Replies: 156

Propeller torque & engine torque

Views: 91,270

Posted By ft

oggers, for once we agree! That does make...

oggers,
for once we agree!

That does make the point clearly. Power used, heat and noise generated, car remaining completely motionless - hence, no work done on the car. Efficiency zero (0).
...

Forum: Tech Log

2nd Apr 2012, 20:25

Replies: 156

Propeller torque & engine torque

Views: 91,270

Posted By ft

If you're not doing any useful work, you can't...

If you're not doing any useful work, you can't claim to be efficient. End of story.

As for your uncontroversial proof of understanding, it dictates that if the Joules leaving the system per time...

Forum: Tech Log

29th Mar 2012, 20:11

Replies: 156

Propeller torque & engine torque

Views: 91,270

Posted By ft

A little understanding is indeed a dangerous...

A little understanding is indeed a dangerous thing.

Force times velocity has been iterated ad nausea throughout this thread.

It's multiplication.

What happens when you multiply by a very...

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