Gear Stage Volumetric Performance

The engine fuel flow requirements are specified in mass units. These must be converted to volumetric flow units for the lowest density fuel specified for all operating conditions. For these volumetric flow rates, the displacement required for each operating condition is determined by applying factors for pump volumetric efficiency that encompass the temperature of the fuel, production variance, and the service life flow deterioration. When the critical displacement sizing operating condition has been established, the overall volumetric performance of the pump can be defined for the complete input speed and pressure rise operating range including the required input power. Figure 18 presents the overall performance characteristic of a pressure-loaded external spur gear high-pressure stage of an aircraft engine main fuel pump.

Renewable Energy Eco Friendly

Renewable Energy Eco Friendly

Renewable energy is energy that is generated from sunlight, rain, tides, geothermal heat and wind. These sources are naturally and constantly replenished, which is why they are deemed as renewable.

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