System Features
Using the Auxiliary Power Unit (APU) generator to power motors on the main wheels, the EGTS taxiing system allows aircraft to push back without a tug and then taxi without requiring the use of the main aircraft engines. One wheel on each main gear is equipped with an electric motor to drive the aircraft, while unique power electronics and system controllers give pilots total control of the aircraft’s speed and direction during taxi operations.
In collaboration with airports worldwide EGTS is being designed to integrate seamlessly into existing surface traffic flow irrespective of weather conditions.
Pilot Interface Unit
Allows the pilot to switch on EGTS and order the desired aircraft motion (forward or backwards).
EGTS Controller
Receives and converts actions into orders to the power electronics.
Wheel Actuator
Applies to the wheel the required torque and speed proportional as per the instructions received from the WACU.
Wheel Actuator Controller Unit (WACU)
The WACU converts current into instructions to the electrical motor proportional to the pilot's command as delivered by the EGTS Controller.
APU Generator
Modified to generate the additional power required to power the EGTS.
EGTS can significantly improve an airline’s operational efficiency by reducing fuel and other taxi related costs.
Improved Efficiency
The EGTS green taxi system can significantly improve an airline’s operational efficiency by reducing fuel and other taxi related costs, as well as providing environmental benefits by slashing the carbon and other emissions created during taxi operations.
- Fuel costs are an ever increasing drain on airline revenues and profits – accounting for between 30% -40% of Direct Operating Costs (DOCs), and up to 50% of airline DOC’s in some regions of the world.
- Taxi operations represent a significant portion of short haul airline fuel costs – on average 4% of fleet fuel consumption for short haul airlines operating single aisle aircraft from congested airports.
