This shows you the differences between two versions of the page.
Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
history_of_flight_-_the_day_of_july_9_1964 [2014/08/16 16:54] tom |
history_of_flight_-_the_day_of_july_9_1964 [2014/08/30 00:08] tom |
||
---|---|---|---|
Line 45: | Line 45: | ||
Section G, regarding the Battery paralleling switch: This is a two position switch (ON-OFF), spring loaded to the OFF position. When ON, it allows the battery control relay to close to charge the batteries from an external power source. | Section G, regarding the Battery paralleling switch: This is a two position switch (ON-OFF), spring loaded to the OFF position. When ON, it allows the battery control relay to close to charge the batteries from an external power source. | ||
{{:playground:image_23_.jpg?550|}} | {{:playground:image_23_.jpg?550|}} | ||
- | + | ||
- | Advisory Circular AC 00-30 in Section 5e recommends that ni-cad batteries not be charged in the aircraft by a ground power unit. This section refers to Section 7a where it states "charging ni-cad batteries with a constant voltage ground power unit is not recommended in as much as this eventually results in cell imbalance and gradual reduction in battery capacity. | + | [[advisory_circular_ac_00-33|Advisory Circular AC 00-33]] in Section 5e recommends that ni-cad batteries not be charged in the aircraft by a ground power unit. This section refers to Section 7a where it states "charging ni-cad batteries with a constant voltage ground power unit is not recommended in as much as this eventually results in cell imbalance and gradual reduction in battery capacity. |
All advisories and airworthiness directives warn of the dangers of extreme heat surrounding the batteries-especially during ground operations. References are made to the "ambient temperature". Inadequate ventilation of battery compartments is given as a possible cause of thermal runaway. | All advisories and airworthiness directives warn of the dangers of extreme heat surrounding the batteries-especially during ground operations. References are made to the "ambient temperature". Inadequate ventilation of battery compartments is given as a possible cause of thermal runaway. | ||
July 9 was a typical hot summer day on the ground. | July 9 was a typical hot summer day on the ground. | ||
+ | |||
+ | {{:playground:image_28_.jpg?600|}} | ||