Archive for the Documents Category
Engine Compartment Battery Installations
How to Protect Your Batteries Basics The operation of an aircraft produces a significant amount of heat inside the engine compartment. Heat is transferred from hot surfaces like an engine head or exhaust pipe by radiation and convection to other components inside the engine compartment. While on the ground with […]
Dual Bus Lithium Battery Design
Main and Essential Buses with dual batteries By Reg Nicoson Basics Some experimental aircrafts are designed with two electrical buses; one for normal operation (main bus) and one for operating essential equipment (essential bus). It is also common for each bus to have their own battery. The essential bus has […]
Lithium Battery Series Parallel Operation
26.4V system using 13.2V batteries By Reg Nicoson Basics Battery packs are designed by connecting multiple cells in series; each cell adds its voltage to the battery’s terminal voltage. Figure 1 below shows a typical EarthX 13.2V LiFePO4 starter battery cell configuration. Batteries may consist of a combination of series […]
Engine Charging Systems and Use with Lithium batteries
Basics Most charging system employed on engines for recharging the vehicle’s battery generate an alternating current (AC) with stationary coils of wire (stator), and rotating permanent magnets (see figure 1 below). The AC is then conditioned with a regulator-rectifier to create a DC current/voltage required for charging a battery (see […]