Aircraft batteries

Light Anti-Aircraft Battery, armed only with obsolescent Lewis guns. 

In each installation requirements of power, insulation to motion and temperature, and air intake and instrument operation needed specific consideration. Power was usually supplied by a 60-cycle, 110-V gasoline generator except in the aircraft where the 24-V aircraft battery was used. Venturi effects while sampling in motion were controlled by attaching an air baffle at the intake. Temperature stability was achieved by the use of insulation material, and the equipment was carefully mounted on an independent spring suspension to protect it from vibrations. 

Low Temp Switch ( 3255) Fails Closed (remains on) Ground and Air Fan remains on None None Fan powered from XSl busbar, ie, not using power from the aircraft batteries None 3.96x10-5 Minor... 

Source From Vutetakis, D. C., and H. Wu, "The effect of change rate and depth of discharge on the cycle life of sealed lead-acid aircraft batteries," Proceedings of the IEEE, 1992 IEEE. With permission. 

Society of Automotive Engineers SAE AS 8033 Aircraft Batteries Nickel-cadmium... 

Applicances and household Auxiliary and emergency Aircraft batteries... 

Industrial and Good high-rate, low-temperature Aircraft batteries, industrial and emergency... 

A listing of several typical vented sintered-plate nickel-cadmium cells is given in Table 27.3. The 14-, 22-, and 36-Ah sizes are those typically employed in aircraft batteries. Other cells are available in sizes up to about 350 Ah. The larger cells are generally constructed in steel containers rather than the plastic containers now used for the aircraft-size cells. 

Aircraft batteries are normally terminated on the front case surface by a connector of the type shown in Fig. 27.19. Special applications, however, may utilize direct cable connection to the first and last cell terminals, as well as various other special configurations capable of handling the high-current rates available in the event of a short circuit of the external battery circuit. 

TABLE 30.3 Envvironmental Nickel-Meteil Hydride Aircraft Battery Ptirameters... 

The nickel-cadmium battery is now the type used almost exclusively for engine starting in larger aircraft. Batteries with capacities up to 200A h are now available. Lead-acid batteries are used in the majority of small private aircraft and in some larger aircraft, e.g. the UK Harrier Jump Jet and BAG Concorde. 

Another major applieation of vented nickel-cadmium batteries is aircraft batteries. These batteries are equipped with a battery temperature monitoring facility in order to comply with the requirements of the FAA. One or more thermal switches are installed in the battery to give advance warning and to prevent overheating of the battery, thereby achieving a greater safety of flight operation. 

Table 51.63 Technical data for Varta vented nickel-cadmium aircraft batteries... 

Figure 51.38 Typical cell discharge characteristics at 2VC of Eagle Richer VNC vented nickel-cadmium aircraft batteries (Courtesy of Eagle Richer)...

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