Charging her is just one concern. There are other dangerous issues
Hi,
The battery has ~ 1/1000 of the mentioned ~ "1.5 MW" plane design. I´ve heard of a diode in the main battery circuitry. We will be able to understand the approach used.
A very low internal resistance together a highly critical battery in a bus (i am looking for the main battery) is another concern. You naturally have "discharge spikes" to batteries in buses. Lead acid and Ni Cd´s are much more tolerant.
I hope transient loading (a design parameter of the electric circuit) to the main battery allows Boeing to replace to Ni Cd without further considerations. (A battery in a bus also acts as a "capacitor" reducing the ripple in the DC level).
In APU battery fire (BOS) we may say this was not a factor. It started the APU and being recharged as we imagine.
IMO what saved the day in TAK was just how fast the crew landed. I also think Machaca put a "lighter" scenario on Japan incident.
Question: The battery case cover is flat or has the geometry showed in the picture of destroyed main battery?
Mac
Last edited by RR_NDB; 24th Jan 2013 at 00:38.
Reason: Text improvement