Reduced-Engine Taxiing Second Engine Startup Timing
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Solution Overview
Problem
Aircraft pilots face uncertainty in determining the optimal time to start the second engine during reduced-engine taxiing operations, leading to potential pilot error and suboptimal fuel savings.
Innovation Solution
A method and system that determine the minimum warm-up time needed for the second engine based on engine, aircraft, airport, and environmental information, providing alerts to the pilot through visual, auditory, or vibrational indications to ensure timely engine startup.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the pilot estimates the warm-up time based on experience, then the operation is simple, but the timing accuracy is poor leading to pilot error
Solution Approach 1:
The system performs self-service by automatically calculating and monitoring the warm-up time requirements for the second engine. The computer calculates the required warm-up time based on stored parameters and provides alerts to the pilot, eliminating the need for the pilot to manually estimate timing while maintaining operational simplicity.
Solution Approach 2:
The system implements feedback by continuously monitoring the taxiing operation timeline and providing real-time alerts to the pilot about when the second engine should be started. The system compares current operation time with calculated warm-up requirements and provides timely notifications to ensure accurate engine startup timing.
2Device complexity
If the pilot manually determines engine startup timing, then the system complexity is low, but the reliability of engine readiness is reduced
Solution Approach 1:
The system performs preliminary action by pre-calculating the required warm-up time for the second engine based on stored parameters about engine characteristics, environmental conditions, and aircraft configuration. This preliminary calculation ensures that the engine will be ready for startup at the correct moment, improving reliability without requiring complex real-time decision-making systems.
Solution Approach 2:
The computer system performs self-service by automatically managing the timing calculations and monitoring the taxiing operation. It independently determines when the second engine should be started based on pre-stored parameters and provides alerts to the pilot, ensuring reliable engine readiness without requiring complex manual coordination systems.
3Reliability
If the second engine is started earlier to ensure warmth, then the engine readiness is improved, but the fuel savings from reduced-engine taxiing are reduced
Solution Approach 1:
The system applies parameter changes by dynamically calculating the optimal warm-up time based on varying parameters such as ambient temperature, engine specifications, aircraft weight, and taxiing speed. By adjusting the warm-up time parameter to match actual operating conditions, the system ensures engine readiness while minimizing unnecessary fuel consumption from premature engine startup.
Solution Approach 2:
The system applies local quality by tailoring the warm-up time requirements to specific local conditions of each engine startup scenario. Different engines, different environmental conditions, and different aircraft configurations result in different optimal warm-up times, allowing the system to optimize fuel savings for each specific situation rather than using a fixed approach.
Data Source
AI summary
A system and method are provided for an aircraft at an airport surrounded by an environment, the aircraft having a first engine and a second engine wherein the second engine is to be started after the first engine. The system and method are configured for determining a minimum amount of warm-up time needed for starting the second engine to meet predetermined start-up requirements for the second engine, based on one or more of engine-related information relating to the second engine, aircraft-related information relating to the aircraft, airport-related information relating to the airport, and environment-related information relating to the environment, and producing an alert based on the minimum amount of warm-up time needed.